History for Helena, MT

Monday, August 20, 2012 — View Current Conditions
Monday, August 20, 2012
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Daily Weekly Monthly Custom
  Actual Average Record
Temperature
Mean Temperature 74 °F 68 °F  
Max Temperature 92 °F 84 °F 96 °F (1967)
Min Temperature 55 °F 52 °F 39 °F (1995)
Degree Days
Heating Degree Days 0 1  
Month to date heating degree days 14 14  
Since 1 June heating degree days 136 177  
Since 1 July heating degree days 14 41  
Cooling Degree Days 9 4  
Month to date cooling degree days 141 113  
Year to date cooling degree days 475 351  
Since 1 June cooling degree days 471 343  
Growing Degree Days 23 (Base 50)    
Moisture
Dew Point 38 °F    
Average Humidity 32    
Maximum Humidity 51    
Minimum Humidity 13    
Precipitation
Precipitation 0.00 in 0.04 in 1.89 in (1933)
Month to date precipitation 0.39 0.76  
Year to date precipitation 6.20 8.11  
Snow
Snow 0.00 in 0.00 in 0.50 in (1990)
Month to date snowfall 0.0 0.1  
Since 1 June snowfall 0.0 0.1  
Since 1 July snowfall 0.0 0.1  
Snow Depth 0.00 in    
Sea Level Pressure
Sea Level Pressure 29.96 in    
Wind
Wind Speed 4 mph (WNW)    
Max Wind Speed 14 mph    
Max Gust Speed 16 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary
Daily Graph
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Astronomy
May. 25, 2013 Rise Set
Actual Time 6:33 AM MDT 8:28 PM MDT
Civil Twilight 6:00 AM MDT 9:00 PM MDT
Nautical Twilight 5:20 AM MDT 9:40 PM MDT
Astronomical Twilight 4:36 AM MDT 10:23 PM MDT
Moon 10:17 AM MDT (8/20) 9:34 PM MDT (8/20)
Length Of Visible Light 14h 59m
Length of Day
13h 55m
Waxing Crescent, 11% of the Moon is Illuminated
Aug 20
Waxing Crescent
Aug 24
First Quarter
Aug 31
Full
Sep 8
Last Quarter
Sep 15
New
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Hourly Observations
Time (MDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 64.9 °F 36.0 °F 34% 29.94 in 10.0 mi South 3.5 mph - N/A   Clear
1:53 AM 61.0 °F 34.0 °F 36% 29.94 in 10.0 mi West 5.8 mph - N/A   Clear
2:53 AM 61.0 °F 34.0 °F 36% 29.94 in 10.0 mi Calm Calm - N/A   Clear
3:53 AM 62.1 °F 35.1 °F 37% 29.95 in 10.0 mi SSE 3.5 mph - N/A   Clear
4:53 AM 55.0 °F 37.0 °F 51% 29.97 in 10.0 mi North 3.5 mph - N/A   Clear
5:53 AM 57.9 °F 37.0 °F 46% 29.99 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 57.9 °F 37.0 °F 46% 30.00 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 57.0 °F 39.0 °F 51% 30.01 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 63.0 °F 37.0 °F 38% 30.01 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 66.9 °F 39.0 °F 36% 30.01 in 10.0 mi Variable 3.5 mph - N/A   Clear
10:53 AM 73.0 °F 39.0 °F 29% 30.00 in 10.0 mi Variable 4.6 mph - N/A   Clear
11:53 AM 78.1 °F 39.0 °F 25% 29.98 in 9.0 mi North 4.6 mph - N/A   Clear
12:53 PM 82.9 °F 39.9 °F 22% 29.96 in 9.0 mi Calm Calm - N/A   Clear
1:53 PM 87.1 °F 37.9 °F 18% 29.94 in 10.0 mi Variable 3.5 mph - N/A   Clear
2:53 PM 88.0 °F 33.1 °F 14% 29.92 in 10.0 mi Variable 3.5 mph - N/A   Clear
3:53 PM 91.0 °F 34.0 °F 13% 29.89 in 10.0 mi NNE 5.8 mph - N/A   Clear
4:53 PM 89.1 °F 33.1 °F 14% 29.92 in 10.0 mi North 5.8 mph - N/A   Clear
5:53 PM 87.1 °F 39.0 °F 18% 29.91 in 10.0 mi North 6.9 mph - N/A   Clear
6:53 PM 84.0 °F 39.9 °F 21% 29.93 in 10.0 mi Calm Calm - N/A   Clear
7:53 PM 82.9 °F 39.0 °F 21% 29.94 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
8:53 PM 81.0 °F 39.0 °F 22% 29.94 in 10.0 mi WSW 8.1 mph - N/A   Clear
9:53 PM 79.0 °F 39.9 °F 25% 29.94 in 10.0 mi West 6.9 mph - N/A   Clear
10:53 PM 75.0 °F 39.9 °F 28% 29.95 in 10.0 mi West 8.1 mph - N/A   Clear
11:53 PM 70.0 °F 41.0 °F 35% 29.96 in 10.0 mi WSW 4.6 mph - N/A   Clear
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