Yellowstone National Park, WY

11:29 PM MDT on May 22, 2013 (GMT -0600)
Elev: 8251 ft
Lon: 110.4° W
Lat: 44.8° N
Source
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Tropical Weather: Invest 91E (East Pacific)
News
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May 21, 2013
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Weather Summary
Kari Kiefer
Weather Underground Forecast for Thursday, May 23, 2013. A strong, large storm will continue making its way through the eastern third of the country on Thursday, producing more, active weather east of the Mississippi Valley. While the active weather is not likely to produce the severe thunderstorms that have greeted the country over the past several days, scattered thunderstorms will be likely, especially in the Southeast. In addition, moderate to occasionally heavy rain will move through the Northeast, followed by cool showers in the Ohio Valley and Upper Midwest.

Meanwhile, some moisture pushing into the Southern Plains could possibly instigate some severe thunderstorms in northern Texas and western Oklahoma. Due to this possibility, the Storm Prediction Center has issued a slight risk of severe weather in the area for Thursday. This means residents in the area should prepare as if severe weather will develop, making any necessary preparations to protect life and property.

Also, a seasonably strong low pressure system will linger over the Pacific Northwest today, allowing wet weather to continue in the area. While rain will be the overwhelming precipitation due to this storm, a few snow showers will be possible in the higher elevations of the Cascades.

Additionally, rain will also spread as far east as central Montana.

The Northeast will rise into the 70s and 80s, while the Southeast will see temperatures in the 80s and 90s. The Southern Plains will rise into the 80s and 90s, while the Southwest will see similar temperatures.
Weather Underground Forecast for Thursday, May 23, 2013. A strong, large storm will continue making its way through the eastern third of the country on Thursday, producing more, active weather east of the Mississippi Valley. While the active weather is not likely to produce the severe thunderstorms that have greeted the country over the past several days, scattered thunderstorms will be likely, especially in the Southeast. In addition, moderate to occasionally heavy rain will move through the Northeast, followed by cool showers in the Ohio Valley and Upper Midwest.

Meanwhile, some moisture pushing into the Southern Plains could possibly instigate some severe thunderstorms in northern Texas and western Oklahoma. Due to this possibility, the Storm Prediction Center has issued a slight risk of severe weather in the area for Thursday. This means residents in the area should prepare as if severe weather will develop, making any necessary preparations to protect life and property.

Also, a seasonably strong low pressure system will linger over the Pacific Northwest today, allowing wet weather to continue in the area. While rain will be the overwhelming precipitation due to this storm, a few snow showers will be possible in the higher elevations of the Cascades.

Additionally, rain will also spread as far east as central Montana.

The Northeast will rise into the 70s and 80s, while the Southeast will see temperatures in the 80s and 90s. The Southern Plains will rise into the 80s and 90s, while the Southwest will see similar temperatures.
More News Articles

Yellowstone National Park Weather at a Glance

Updated 10:49 PM MDT
Elevation
7899 ft
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Now
Overcast
Overcast
Temperature
41 °F
Feels Like 41 °F
Wind(mph)
1
Sunrise / Set
5:45 AM
8:51 PM
Moon
Waxing Gibbous
Tonight
Thunderstorm 36 °F
T-storms
60% chance of precipitation
Tomorrow
Thunderstorm 57 °F
T-storms
40% chance of precipitation
Tomorrow Night
Thunderstorm 30 °F
T-storms
30% chance of precipitation
Friday
Partly Cloudy 54 | 28 °F
Partly Cloudy
Saturday
Thunderstorm 63 | 36 °F
Thunderstorm
20% chance of precipitation
Sunday
Partly Cloudy 63 | 36 °F
Partly Cloudy
Tomorrow is forecast to be Cooler than today.
Conditions
Pressure
29.90 in
Visibility
10.0 miles
Clouds
Overcast 3100 ft
Moisture
Humidity
92%
Rainfall
0.20 in
Snow Depth
Not available.
METAR
METAR KWYS 230510Z AUTO 21005KT 10SM OVC031 06/03 A2990 RMK AO2
Don't speak METAR? Read our FAQ.
Weather Radio
Weather Radio Index
Temperature
Windchill
41 °F
Dew Point
39 °F
Wind
Speed / Dir
1 mph from NE
Wind Gust
5.0 mph
Health
UV
0 out of 16
Pollen
8.20 out of 12
Pollen Forecast
Air Quality
Not available.
Flu Activity
Sporadic
View Flu Map
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Source: BestForecast
Descriptive Forecast
Wednesday Night
nt_tstorms Mostly cloudy with thunderstorms and rain showers, then snow showers and thunderstorms after midnight. Low of 36F. Winds from the SE at 5 to 15 mph. Chance of precipitation 60% .
Thursday
tstorms Partly cloudy with rain showers, then thunderstorms and rain showers in the afternoon. High of 57F. Breezy. Winds from the South at 10 to 20 mph with gusts to 30 mph. Chance of rain 40%.
Thursday Night
nt_tstorms Partly cloudy with thunderstorms and rain showers. Low of 30F. Winds from the SSW at 10 to 15 mph. Chance of rain 30%.
Friday
partlycloudy Partly cloudy in the morning, then clear. High of 54F. Breezy. Winds from the SW at 15 to 20 mph.
Friday Night
nt_partlycloudy Clear. Low of 28F. Winds from the South at 5 to 20 mph.
Saturday
partlycloudy Partly cloudy with thunderstorms and rain showers in the afternoon. High of 63F. Winds from the South at 5 to 15 mph. Chance of rain 20%.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 36F. Winds from the South at 5 to 10 mph.
Sunday
partlycloudy Overcast. High of 63F. Winds from the SSW at 5 to 10 mph.
Sunday Night
nt_clear Partly cloudy. Low of 36F. Winds from the SSW at 5 to 10 mph.
Monday
chancetstorms Overcast in the morning, then mostly cloudy with a chance of a thunderstorm and rain. High of 57F. Winds from the SSW at 5 to 10 mph shifting to the WSW in the afternoon. Chance of rain 40%.
Monday Night
nt_mostlycloudy Mostly cloudy with a chance of rain. Low of 34F. Winds less than 5 mph. Chance of rain 20%.
Tuesday
mostlycloudy Overcast. High of 57F. Winds from the SSW at 5 to 15 mph.
Tuesday Night
nt_mostlycloudy Partly cloudy. Low of 34F. Winds from the South at 5 to 15 mph.
Wednesday
chancetstorms Mostly cloudy with a chance of a thunderstorm. High of 52F. Winds from the SSW at 5 to 15 mph. Chance of rain 40%.
Wednesday Night
nt_chancetstorms Overcast with a chance of a thunderstorm. Low of 34F. Winds from the South at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.2 in. possible.
Thursday
mostlycloudy Mostly cloudy with a chance of a thunderstorm. High of 54F. Winds from the WSW at 5 to 10 mph. Chance of rain 20%.
Thursday Night
nt_mostlycloudy Mostly cloudy with a chance of a thunderstorm. Low of 32F. Winds less than 5 mph. Chance of rain 20%.
Friday
chancesnow Mostly cloudy with a chance of snow. High of 45F. Winds from the West at 5 to 10 mph. Chance of snow 30%.
Friday Night
nt_mostlycloudy Mostly cloudy. Low of 30F. Winds less than 5 mph.
Saturday
partlycloudy Clear. High of 46F. Winds less than 5 mph.
Saturday Night
nt_clear Clear. Low of 30F. Winds less than 5 mph.
Sunday
partlycloudy Clear. High of 48F. Winds less than 5 mph.
Sunday Night
nt_clear Clear. Low of 30F. Winds less than 5 mph.
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Weather Forecast for Yellowstone National Park WY

View Calendar 10-Day Forecast for station MCANW4

Thursday, 23
Thunderstorm
57 | 30 °F
T-storms
Chance of
Precipitation
40%
Friday, 24
Partly Cloudy
54 | 28 °F
Partly Cloudy
Chance of
Precipitation
10%
Saturday, 25
Thunderstorm
63 | 36 °F
Thunderstorm
Chance of
Precipitation
20%
Sunday, 26
Partly Cloudy
63 | 36 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 27
Chance of a Thunderstorm
57 | 34 °F
Chance of T-storms
Chance of
Precipitation
40%
Tuesday, 28
Mostly Cloudy
57 | 34 °F
Mostly Cloudy
Chance of
Precipitation
0%
Wednesday, 29
Chance of a Thunderstorm
52 | 34 °F
Chance of T-storms
Chance of
Precipitation
40%
Thursday, 30
Chance of a Thunderstorm
54 | 32 °F
Chance of a Thunderstorm
Chance of
Precipitation
20%
Friday, 31
Chance of Snow
45 | 30 °F
Chance of Snow
Chance of
Precipitation
30%
Saturday, 1
Partly Cloudy
46 | 30 °F
Partly Cloudy
Chance of
Precipitation
0%
Source: BestForecast at 9:08 PM MDT on May 22, 2013
Descriptive Forecast
Thursday
tstorms Partly cloudy with rain showers, then thunderstorms and rain showers in the afternoon. High of 57F. Breezy. Winds from the South at 10 to 20 mph with gusts to 30 mph. Chance of rain 40%.
Thursday Night
nt_tstorms Partly cloudy with thunderstorms and rain showers. Low of 30F. Winds from the SSW at 10 to 15 mph. Chance of rain 30%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 37 | 32 55 | 34 52 | 30 39 | 28
Wind 11 mph SSE 17 mph South 10 mph SSW 8 mph South
Humidity 83% 43% 43% 66%
Chance of Precip. 60% 40% 40% 10%
Cloud Cover 53% 60% 75% 57%
Conditions Rain Showers Thunderstorm Thunderstorm Partly Cloudy
Sunrise & Sunset
5:45 AM
8:51 PM
The quality of the forecasted high temperature for this day is excellent. MaxT RMSE [1.49], Average RMSE [1.79]
The National Weather Service forecast quality is excellent. MaxT RMSE [1.47], Average RMSE [2.07] : Use NWS
Source: BestForecast at 9:08 PM MDT on May 22, 2013
Descriptive Forecast
Friday
partlycloudy Partly cloudy in the morning, then clear. High of 54F. Breezy. Winds from the SW at 15 to 20 mph.
Friday Night
nt_partlycloudy Clear. Low of 28F. Winds from the South at 5 to 20 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 30 | 27 54 | 21 54 | 18 37 | 25
Wind 12 mph SSW 19 mph SW 18 mph SSW 9 mph South
Humidity 81% 27% 23% 61%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 33% 25% 25% 19%
Conditions Partly Cloudy Clear Clear Clear
Sunrise & Sunset
5:45 AM
8:52 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.18], Average RMSE [1.66]
The National Weather Service forecast quality is good. MaxT RMSE [1.97], Average RMSE [2.16] : Use NWS
Source: BestForecast at 9:08 PM MDT on May 22, 2013
Descriptive Forecast
Saturday
partlycloudy Partly cloudy with thunderstorms and rain showers in the afternoon. High of 63F. Winds from the South at 5 to 15 mph. Chance of rain 20%.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 36F. Winds from the South at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 28 | 23 63 | 21 57 | 19 43 | 25
Wind 5 mph SSE 13 mph SSW 8 mph SW 5 mph SE
Humidity 81% 21% 22% 47%
Chance of Precip. 10% 20% 10% 10%
Cloud Cover 36% 39% 50% 19%
Conditions Partly Cloudy Thunderstorm Partly Cloudy Clear
Sunrise & Sunset
5:44 AM
8:53 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.52], Average RMSE [1.84]
The National Weather Service forecast quality is good. MaxT RMSE [2.17], Average RMSE [2.26] : Use NWS
Source: BestForecast at 9:08 PM MDT on May 22, 2013
Descriptive Forecast
Sunday
partlycloudy Overcast. High of 63F. Winds from the SSW at 5 to 10 mph.
Sunday Night
nt_clear Partly cloudy. Low of 36F. Winds from the SSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 41 | 19 57 | 19 57 | 21 45 | 27
Wind 5 mph SSE 9 mph SW 9 mph WSW 6 mph SSE
Humidity 40% 23% 24% 50%
Chance of Precip. 0% 0% 10% 10%
Cloud Cover 95% 100% 38% 0%
Conditions Overcast Overcast Partly Cloudy Clear
Sunrise & Sunset
5:43 AM
8:54 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.55], Average RMSE [1.52]
The National Weather Service forecast quality is fair. MaxT RMSE [2.69], Average RMSE [2.48] : Use NWS
Source: BestForecast at 9:08 PM MDT on May 22, 2013
Descriptive Forecast
Monday
chancetstorms Overcast in the morning, then mostly cloudy with a chance of a thunderstorm and rain. High of 57F. Winds from the SSW at 5 to 10 mph shifting to the WSW in the afternoon. Chance of rain 40%.
Monday Night
nt_mostlycloudy Mostly cloudy with a chance of rain. Low of 34F. Winds less than 5 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 36 | 25 55 | 28 54 | 32 43 | 30
Wind 3 mph SSE 7 mph WSW 6 mph West 3 mph SSE
Humidity 63% 36% 42% 57%
Chance of Precip. 10% 20% 20% 10%
Cloud Cover 86% 88% 24% 70%
Conditions Mostly Cloudy Chance of Rain Chance of Rain Mostly Cloudy
Sunrise & Sunset
5:42 AM
8:55 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.01], Average RMSE [1.75]
The National Weather Service forecast quality is fair. MaxT RMSE [3.04], Average RMSE [2.40] : Use NWS
Source: BestForecast at 9:08 PM MDT on May 22, 2013
Descriptive Forecast
Tuesday
mostlycloudy Overcast. High of 57F. Winds from the SSW at 5 to 15 mph.
Tuesday Night
nt_mostlycloudy Partly cloudy. Low of 34F. Winds from the South at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 39 | 21 57 | 23 52 | 36 43 | 34
Wind 4 mph SSE 9 mph SW 11 mph SW 6 mph SSE
Humidity 47% 27% 53% 68%
Chance of Precip. 10% 0% 20% 10%
Cloud Cover 99% 97% 97% 96%
Conditions Overcast Overcast Chance of Rain Overcast
Sunrise & Sunset
5:41 AM
8:56 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.35], Average RMSE [2.86]
The National Weather Service forecast quality is poor. MaxT RMSE [3.54], Average RMSE [3.13] : Use NWS
Source: BestForecast at 9:08 PM MDT on May 22, 2013
Descriptive Forecast
Wednesday
chancetstorms Mostly cloudy with a chance of a thunderstorm. High of 52F. Winds from the SSW at 5 to 15 mph. Chance of rain 40%.
Wednesday Night
nt_chancetstorms Overcast with a chance of a thunderstorm. Low of 34F. Winds from the South at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.2 in. possible.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 36 | 30 52 | 34 50 | 34 39 | 36
Wind 6 mph SSE 13 mph SW 9 mph SSW 4 mph South
Humidity 81% 47% 55% 86%
Chance of Precip. 0% 20% 20% 30%
Cloud Cover 51% 95% 89% 98%
Conditions Partly Cloudy Chance of a Thunderstorm Chance of a Thunderstorm Chance of Rain
Sunrise & Sunset
5:41 AM
8:57 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.54], Average RMSE [2.80]
The National Weather Service forecast quality is poor. MaxT RMSE [5.24], Average RMSE [4.43] : Use NWS
Source: BestForecast at 9:08 PM MDT on May 22, 2013
Descriptive Forecast
Thursday
mostlycloudy Mostly cloudy with a chance of a thunderstorm. High of 54F. Winds from the WSW at 5 to 10 mph. Chance of rain 20%.
Thursday Night
nt_mostlycloudy Mostly cloudy with a chance of a thunderstorm. Low of 32F. Winds less than 5 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 41 | 36 48 | 36 46 | 36 36 | 32
Wind 6 mph SSW 6 mph WSW 6 mph West 4 mph WSW
Humidity 76% 60% 65% 89%
Chance of Precip. 20% 20% 20% 20%
Cloud Cover 99% 91% 83% 80%
Conditions Chance of Rain Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:40 AM
8:58 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [6.78], Average RMSE [6.05]
Source: BestForecast at 9:08 PM MDT on May 22, 2013
Descriptive Forecast
Friday
chancesnow Mostly cloudy with a chance of snow. High of 45F. Winds from the West at 5 to 10 mph. Chance of snow 30%.
Friday Night
nt_mostlycloudy Mostly cloudy. Low of 30F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 32 | 30 45 | 32 45 | 34 32 | 30
Wind 4 mph WSW 7 mph West 6 mph West 2 mph West
Humidity 89% 60% 65% 94%
Chance of Precip. 30% 30% 10% 10%
Cloud Cover 77% 84% 92% 78%
Conditions Chance of Snow Chance of Rain Overcast Mostly Cloudy
Sunrise & Sunset
5:39 AM
8:59 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [7.18], Average RMSE [4.12]
Source: BestForecast at 9:08 PM MDT on May 22, 2013
Descriptive Forecast
Saturday
partlycloudy Clear. High of 46F. Winds less than 5 mph.
Saturday Night
nt_clear Clear. Low of 30F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 30 | 28 45 | 30 46 | 30 34 | 30
Wind 2 mph West 5 mph West 4 mph WNW 1 mph West
Humidity 94% 53% 54% 87%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 64% 37% 10% 21%
Conditions Mostly Cloudy Partly Cloudy Clear Clear
Sunrise & Sunset
5:39 AM
9:00 PM
Source: BestForecast at 9:08 PM MDT on May 22, 2013
Descriptive Forecast
Sunday
partlycloudy Clear. High of 48F. Winds less than 5 mph.
Sunday Night
nt_clear Clear. Low of 30F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 30 | 28 48 | 30 48 | 30 36 | 28
Wind 1 mph WNW 4 mph West 3 mph West 0 mph SW
Humidity 92% 47% 48% 78%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 33% % % %
Conditions Partly Cloudy Clear Clear Clear
Sunrise & Sunset
Sun does not rise
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
May 23, 2013 Max Temp Min Temp
Normal (KP60) 53 °F 30 °F
Record (KP60) 64 °F (2001) 25 °F (2001)
Yesterday 55 °F 27 °F
Yesterday's Heating Degree Days: 24
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
No recent earthquake activity has been reported nearby.
Minimum magnitude displayed is 2.5.
More information at USGS.gov
Astronomy
May. 22, 2013 Rise Set
Actual Time 5:45 AM MDT 8:51 PM MDT
Civil Twilight 5:10 AM MDT 9:26 PM MDT
Nautical Twilight 4:25 AM MDT 10:12 PM MDT
Astronomical Twilight 3:31 AM MDT 11:06 PM MDT
Moon 6:12 PM MDT (5/22) 3:59 AM MDT (5/22)
Length Of Visible Light 16h 15m
Length of Day
15h 05m
Tomorrow will be 1m 53s longer.
Waxing Gibbous, 94% of the Moon is Illuminated
Today
Waxing Gibbous
May 24
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter
Visit Astronomy
Yesterday's Extremes
State Highs State Lows
78 °F
Greybull
77 °F
Riverton
77 °F
Worland
74 °F
Big Piney
74 °F
Rawlins
30 °F
Yellowstone
32 °F
Rawlins
33 °F
Laramie
35 °F
Cheyenne
35 °F
Casper
Record Extremes
Snow Depth
Station Depth Elevation
Sylvan Lake 3 in 8420 ft
Thumb Divide 0 in 7980 ft
Lewis Lake Divide 11 in 7850 ft
Two Ocean Plateau 41 in 9240 ft
Phillips Bench 20 in 8200 ft
Snow Depth Reports — Snow Depth Map
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Aviation
City Temp. Conditions Updated
Yellowstone 41 °F N/A 10:56 PM MDT
West Yellowstone 43 °F Overcast 11:10 PM MDT
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Flight To ETA Status
No flights were found.
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Type Condition
Flight Rule: VFR (KWYS)
Wind Speed: 5.0 kts.
Wind Dir: 40° (NE)
Ceiling: 3100 ft

METAR KWYS 230510Z AUTO 21005KT 10SM OVC031 06/03 A2990 RMK AO2

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Weather Stations
Station Location Temp. Windchill Dew Point Humidity Wind Precipitation Elevation Updated Type Website
MesoWest CANYON , Yellowstone National Park, WY 43 °F 43 °F - - North  at  - 0.00 in / hr 8089 ft 10:00 PM MDT MADIS
RAWS GREBE WY, Yellowstone National Park, WY 41 °F 41 °F 39 °F 92% NE  at  1 mph 0.00 in / hr 7899 ft 10:49 PM MDT MADIS
RAWS SODA BUTTE MT, Cooke City, MT 43 °F 43 °F 39 °F 86% SE  at  2 mph 0.00 in / hr 8160 ft 10:17 PM MDT MADIS
MesoWest NORTHEAST ENTRANCE , Cooke City, MT 46 °F 46 °F - - North  at  - 0.00 in / hr 7350 ft 10:00 PM MDT MADIS
HADS SODA BUTTE CREEK AT YELLOWSTONE WY, Cooke City, MT 43 °F 43 °F - - North  at  - 0.00 in / hr 7359 ft 10:45 PM MDT MADIS
HADS TOWER FALLS RANGER STATION AT YE WY, Yellowstone National Park, WY 45 °F 45 °F 45 °F 100% SSW  at  3 mph 0.00 in / hr 6266 ft 10:15 PM MDT MADIS
HADS MAMMOTH WY, Yellowstone National Park, WY 48 °F 48 °F 42 °F 81% WSW  at  2 mph 0.00 in / hr 6299 ft 10:15 PM MDT MADIS
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