Weather History for West Yellowstone, MT

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Monday, February 20, 2012

  Actual Average Record
Temperature  
Mean Temperature 8 °F -  
Max Temperature 19 °F 33 °F 21 °F (2011)
Min Temperature -2 °F 4 °F -2 °F (2012)
Degree Days  
Heating Degree Days 56    
Moisture  
Dew Point 9 °F    
Average Humidity 88    
Maximum Humidity 100    
Minimum Humidity 85    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.87 in    
Wind  
Wind Speed 6 mph (SW)    
Max Wind Speed 21 mph    
Max Gust Speed 32 mph    
Visibility 6 miles    
Events Rain , Snow    
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Feb. 20, 2012 Rise Set
Actual Time 7:17 AM MST 5:59 PM MST
Civil Twilight 6:48 AM MST 6:29 PM MST
Nautical Twilight 6:14 AM MST 7:03 PM MST
Astronomical Twilight 5:40 AM MST 7:36 PM MST
Moon 6:17 AM MST (2/20) 5:07 PM MST (2/20)
Length of Visible Light 11h 41m
Length of Day
10h 41m
Waning Crescent, 1% of the Moon is Illuminated
Feb 20
Waning Crescent
Feb 21
New
Feb 29
First Quarter
Mar 8
Full
Mar 14
Last Quarter

Hourly Weather History & Observations

Time (MST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 1.4 °F - -0.4 °F 92% 29.85 in 10.0 mi Calm Calm - N/A   Overcast
12:35 AM 1.4 °F - -0.4 °F 92% 29.86 in 10.0 mi Calm Calm - N/A   Overcast
12:55 AM -0.4 °F - -0.4 °F 100% 29.86 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:15 AM -2.2 °F -10.4 °F -5.8 °F 85% 29.86 in 10.0 mi NNW 3.5 mph - N/A   Scattered Clouds
1:35 AM -2.2 °F - -4.0 °F 92% 29.86 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:55 AM -2.2 °F - -4.0 °F 92% 29.86 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:15 AM -2.2 °F - -4.0 °F 92% 29.87 in 10.0 mi Calm Calm - N/A   Overcast
2:35 AM -2.2 °F - -4.0 °F 92% 29.87 in 10.0 mi Calm Calm - N/A   Overcast
2:55 AM -0.4 °F - -2.2 °F 92% 29.86 in 10.0 mi Calm Calm - N/A   Overcast
3:15 AM 1.4 °F - -0.4 °F 92% 29.86 in 10.0 mi Calm Calm - N/A   Overcast
3:35 AM 3.2 °F - -0.4 °F 85% 29.86 in 10.0 mi Calm Calm - N/A   Overcast
3:55 AM 5.0 °F - 1.4 °F 85% 29.86 in 10.0 mi Calm Calm - N/A   Overcast
4:15 AM 5.0 °F - 1.4 °F 85% 29.86 in 10.0 mi Calm Calm - N/A   Overcast
4:35 AM 6.8 °F -0.1 °F 3.2 °F 85% 29.85 in 10.0 mi NE 3.5 mph - N/A   Overcast
4:55 AM 6.8 °F -0.1 °F 5.0 °F 92% 29.85 in 10.0 mi NE 3.5 mph - N/A   Overcast
5:15 AM 8.6 °F 2.0 °F 5.0 °F 85% 29.85 in 10.0 mi NE 3.5 mph - N/A Rain Light Freezing Rain
5:55 AM 14.0 °F 2.0 °F 10.4 °F 86% 29.85 in 10.0 mi SW 9.2 mph - N/A   Overcast
6:15 AM 14.0 °F 2.9 °F 10.4 °F 86% 29.86 in 9.0 mi SW 8.1 mph 18.4 mph N/A Snow Light Snow
7:35 AM 14.0 °F 3.9 °F 10.4 °F 86% 29.87 in 10.0 mi SW 6.9 mph 17.3 mph N/A   Overcast
7:55 AM 14.0 °F 6.5 °F 10.4 °F 86% 29.88 in 9.0 mi WSW 4.6 mph - N/A Snow Light Snow
8:15 AM 14.0 °F 2.9 °F 10.4 °F 86% 29.88 in 8.0 mi SW 8.1 mph 19.6 mph N/A   Overcast
8:35 AM 14.0 °F 1.2 °F 10.4 °F 86% 29.89 in 8.0 mi SW 10.4 mph 26.5 mph N/A   Overcast
8:55 AM 15.8 °F 2.1 °F 12.2 °F 86% 29.89 in 10.0 mi SW 12.7 mph 18.4 mph N/A   Overcast
9:15 AM 15.8 °F 1.4 °F 12.2 °F 86% 29.90 in 9.0 mi SW 13.8 mph 18.4 mph N/A   Overcast
9:35 AM 15.8 °F -0.6 °F 12.2 °F 86% 29.89 in 9.0 mi SW 18.4 mph - N/A   Overcast
9:55 AM 15.8 °F 3.4 °F 14.0 °F 93% 29.90 in 6.0 mi SSW 10.4 mph 23.0 mph N/A   Overcast
10:15 AM 15.8 °F 0.9 °F 14.0 °F 93% 29.90 in 3.0 mi SW 15.0 mph 23.0 mph N/A Snow Light Snow
10:35 AM 17.6 °F 3.2 °F 14.0 °F 86% 29.90 in 1.0 mi SSW 15.0 mph 26.5 mph N/A Snow Light Snow
10:55 AM 17.6 °F 3.2 °F 14.0 °F 86% 29.90 in 1.0 mi SSW 15.0 mph 28.8 mph N/A Snow Light Snow
11:15 AM 17.6 °F 4.3 °F 14.0 °F 86% 29.90 in 1.2 mi SSW 12.7 mph 23.0 mph N/A Snow Light Snow
11:35 AM 17.6 °F 2.7 °F 14.0 °F 86% 29.89 in 2.0 mi SSW 16.1 mph 24.2 mph N/A Snow Light Snow
11:55 AM 17.6 °F 3.7 °F 15.8 °F 93% 29.89 in 3.0 mi SW 13.8 mph 21.9 mph N/A Snow Light Snow
12:15 PM 17.6 °F 2.7 °F 14.0 °F 86% 29.88 in 2.5 mi SSW 16.1 mph 21.9 mph N/A   Clear
12:35 PM 17.6 °F 2.7 °F 15.8 °F 93% 29.87 in 2.0 mi SW 16.1 mph 26.5 mph N/A Snow Light Snow
12:55 PM 19.4 °F 4.5 °F 15.8 °F 86% 29.87 in 1.2 mi SW 17.3 mph 32.2 mph N/A Snow Light Snow
1:15 PM 17.6 °F 4.3 °F 14.0 °F 86% 29.87 in 1.0 mi SW 12.7 mph 28.8 mph N/A Snow Light Snow
1:35 PM 17.6 °F 0.9 °F 14.0 °F 86% 29.86 in 0.8 mi SSW 20.7 mph 25.3 mph N/A Snow Light Snow
1:55 PM 17.6 °F 3.7 °F 15.8 °F 93% 29.86 in 1.2 mi SW 13.8 mph 21.9 mph N/A Snow Light Snow
2:15 PM 17.6 °F 2.7 °F 15.8 °F 93% 29.86 in 1.5 mi SW 16.1 mph 26.5 mph N/A Snow Light Snow
2:35 PM 17.6 °F 3.2 °F 15.8 °F 93% 29.86 in 1.5 mi SW 15.0 mph 26.5 mph N/A Snow Light Snow
2:55 PM 19.4 °F 6.6 °F 15.8 °F 86% 29.85 in 2.0 mi SW 12.7 mph 25.3 mph N/A Snow Light Snow
3:15 PM 19.4 °F 7.9 °F 15.8 °F 86% 29.86 in 2.0 mi WSW 10.4 mph 18.4 mph N/A Snow Light Snow
3:35 PM 19.4 °F 7.2 °F 15.8 °F 86% 29.86 in 2.5 mi SW 11.5 mph 17.3 mph N/A Snow Light Snow
3:55 PM 19.4 °F 7.9 °F 15.8 °F 86% 29.87 in 2.0 mi SW 10.4 mph 23.0 mph N/A Snow Light Snow
4:15 PM 19.4 °F 8.6 °F 15.8 °F 86% 29.87 in 1.5 mi SW 9.2 mph 16.1 mph N/A Snow Light Snow
4:35 PM 19.4 °F 6.6 °F 15.8 °F 86% 29.87 in 2.0 mi WSW 12.7 mph 18.4 mph N/A Snow Light Snow
4:55 PM 19.4 °F 6.0 °F 15.8 °F 86% 29.86 in 1.5 mi SW 13.8 mph 20.7 mph N/A Snow Light Snow
5:15 PM 19.4 °F 8.6 °F 15.8 °F 86% 29.87 in 2.0 mi WSW 9.2 mph - N/A Snow Light Snow
5:35 PM 19.4 °F 8.6 °F 15.8 °F 86% 29.86 in 5.0 mi SW 9.2 mph - N/A   Mostly Cloudy
5:55 PM 19.4 °F 7.9 °F 15.8 °F 86% 29.86 in 3.0 mi SW 10.4 mph - N/A Snow Light Snow
6:15 PM 19.4 °F 12.8 °F 15.8 °F 86% 29.87 in 1.0 mi West 4.6 mph 17.3 mph N/A Snow Light Snow
6:35 PM 17.6 °F 5.0 °F 15.8 °F 93% 29.87 in 1.5 mi SW 11.5 mph 21.9 mph N/A Snow Light Snow
6:55 PM 17.6 °F 3.2 °F 15.8 °F 93% 29.88 in 2.5 mi SW 15.0 mph 23.0 mph N/A Snow Light Snow
7:15 PM 17.6 °F 7.3 °F 15.8 °F 93% 29.88 in 2.0 mi SW 8.1 mph - N/A Snow Light Snow
7:35 PM 17.6 °F 5.7 °F 15.8 °F 93% 29.88 in 1.8 mi SW 10.4 mph 18.4 mph N/A Snow Light Snow
7:55 PM 17.6 °F 6.4 °F 15.8 °F 93% 29.88 in 2.0 mi SSW 9.2 mph - N/A Snow Light Snow
8:15 PM 17.6 °F 8.2 °F 15.8 °F 93% 29.88 in 4.0 mi SSW 6.9 mph 17.3 mph N/A Snow Light Snow
8:35 PM 19.4 °F 7.2 °F 15.8 °F 86% 29.88 in 5.0 mi SSW 11.5 mph 16.1 mph N/A   Overcast
8:55 PM 19.4 °F 6.0 °F 15.8 °F 86% 29.89 in 2.5 mi SSW 13.8 mph - N/A Snow Light Snow
9:15 PM 19.4 °F 8.6 °F 15.8 °F 86% 29.88 in 2.0 mi SSW 9.2 mph - N/A Snow Light Snow
9:35 PM 19.4 °F 7.9 °F 15.8 °F 86% 29.88 in 2.0 mi SSW 10.4 mph - N/A Snow Light Snow
9:55 PM 19.4 °F 8.6 °F 15.8 °F 86% 29.89 in 5.0 mi WSW 9.2 mph 17.3 mph N/A Snow Light Snow
10:15 PM 19.4 °F 9.5 °F 15.8 °F 86% 29.89 in 10.0 mi WSW 8.1 mph - N/A   Overcast
10:35 PM 19.4 °F 10.4 °F 15.8 °F 86% 29.89 in 10.0 mi SW 6.9 mph - N/A   Overcast
10:55 PM 19.4 °F 6.6 °F 15.8 °F 86% 29.89 in 1.8 mi SW 12.7 mph 17.3 mph N/A Snow Light Snow
11:15 PM 19.4 °F 10.4 °F 15.8 °F 86% 29.89 in 2.5 mi SW 6.9 mph - N/A Snow Light Snow
11:35 PM 19.4 °F 11.5 °F 15.8 °F 86% 29.89 in 3.0 mi SW 5.8 mph - N/A Snow Light Snow
11:55 PM 19.4 °F 8.6 °F 17.6 °F 93% 29.88 in 9.0 mi SW 9.2 mph - N/A   Overcast