Weather History for Helena, MT

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Tuesday, February 7, 2012

  Actual Average Record
Temperature  
Mean Temperature 25 °F 26 °F  
Max Temperature 31 °F 37 °F 62 °F (1886)
Min Temperature 18 °F 16 °F -36 °F (1936)
Degree Days  
Heating Degree Days 40 39  
Month to date heating degree days 261 275  
Since 1 July heating degree days 4317 4793  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 17 °F    
Average Humidity 74    
Maximum Humidity 84    
Minimum Humidity 63    
Precipitation  
Precipitation T in 0.01 in 0.35 in (1975)
Month to date precipitation 0.06 0.07  
Year to date precipitation 1.34 0.43  
Snow  
Snow 0.40 in 0.10 in 5.70 in (2011)
Month to date snowfall 2.2 1.3  
Since 1 July snowfall 30.8 23.6  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.40 in    
Wind  
Wind Speed 4 mph (WNW)    
Max Wind Speed 9 mph    
Max Gust Speed 12 mph    
Visibility 9 miles    
Events Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Feb. 07, 2012 Rise Set
Actual Time 7:44 AM MST 5:40 PM MST
Civil Twilight 7:12 AM MST 6:12 PM MST
Nautical Twilight 6:36 AM MST 6:48 PM MST
Astronomical Twilight 6:01 AM MST 7:23 PM MST
Moon 5:59 PM MST (2/7) 7:13 AM MST (2/7)
Length of Visible Light 10h 59m
Length of Day
9h 55m
Full, 100% of the Moon is Illuminated
Feb 7
Full
Feb 7
Full
Feb 14
Last Quarter
Feb 21
New
Feb 29
First Quarter

Hourly Weather History & Observations

Time (MST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 25.0 °F 19.3 °F 19.9 °F 81% 30.54 in 7.0 mi West 4.6 mph - 0.00 in Snow Light Snow
1:53 AM 24.1 °F 16.0 °F 19.0 °F 81% 30.54 in 9.0 mi NW 6.9 mph - 0.00 in   Overcast
2:53 AM 23.0 °F 15.8 °F 17.1 °F 78% 30.54 in 8.0 mi WNW 5.8 mph - 0.00 in Snow Light Snow
3:53 AM 21.9 °F 13.4 °F 17.1 °F 82% 30.53 in 8.0 mi West 6.9 mph - 0.00 in Snow Light Snow
4:53 AM 21.9 °F 12.5 °F 17.1 °F 82% 30.53 in 7.0 mi West 8.1 mph - 0.00 in Snow Light Snow
5:07 AM 21.2 °F 12.6 °F 17.6 °F 86% 30.33 in 5.0 mi West 6.9 mph - 0.00 in Snow Light Snow
5:53 AM 21.9 °F 15.7 °F 17.1 °F 82% 30.52 in 6.0 mi West 4.6 mph - 0.00 in Snow Light Snow
6:53 AM 21.9 °F 15.7 °F 17.1 °F 82% 30.51 in 10.0 mi WNW 4.6 mph - 0.00 in   Overcast
7:53 AM 21.0 °F 16.2 °F 16.0 °F 81% 30.50 in 10.0 mi West 3.5 mph - N/A   Overcast
8:53 AM 21.9 °F 17.2 °F 16.0 °F 78% 30.50 in 9.0 mi WNW 3.5 mph - N/A   Overcast
9:53 AM 23.0 °F 15.8 °F 16.0 °F 74% 30.48 in 10.0 mi NW 5.8 mph - N/A   Overcast
10:10 AM 23.0 °F 18.4 °F 15.8 °F 74% 30.29 in 10.0 mi North 3.5 mph - N/A   Overcast
10:53 AM 25.0 °F - 16.0 °F 69% 30.47 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:36 AM 26.6 °F 22.6 °F 17.6 °F 69% 30.28 in 10.0 mi WNW 3.5 mph - N/A   Scattered Clouds
11:49 AM 26.6 °F 20.0 °F 17.6 °F 69% 30.27 in 10.0 mi WNW 5.8 mph - N/A   Mostly Cloudy
11:53 AM 26.1 °F - 17.1 °F 69% 30.45 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:53 PM 26.1 °F 21.9 °F 16.0 °F 66% 30.43 in 10.0 mi ENE 3.5 mph - N/A   Mostly Cloudy
1:53 PM 28.0 °F 21.7 °F 17.1 °F 63% 30.40 in 10.0 mi NNE 5.8 mph - N/A   Overcast
2:53 PM 28.0 °F 24.2 °F 17.1 °F 63% 30.38 in 10.0 mi NNE 3.5 mph - N/A   Mostly Cloudy
3:00 PM 28.4 °F - 17.6 °F 64% 30.21 in 10.0 mi Calm Calm - N/A   Overcast
3:53 PM 28.9 °F - 17.1 °F 61% 30.37 in 10.0 mi Calm Calm - N/A   Clear
4:53 PM 25.0 °F 20.7 °F 17.1 °F 72% 30.37 in 10.0 mi NW 3.5 mph - N/A   Clear
5:53 PM 21.9 °F 15.7 °F 17.1 °F 82% 30.38 in 10.0 mi NW 4.6 mph - N/A   Partly Cloudy
6:53 PM 21.0 °F 14.6 °F 16.0 °F 81% 30.39 in 10.0 mi WNW 4.6 mph - N/A   Scattered Clouds
7:53 PM 19.0 °F 10.0 °F 14.0 °F 81% 30.40 in 10.0 mi WSW 6.9 mph - N/A   Clear
8:53 PM 19.9 °F 13.4 °F 16.0 °F 85% 30.39 in 10.0 mi West 4.6 mph - N/A   Overcast
9:17 PM 21.2 °F 14.9 °F 17.6 °F 86% 30.18 in 10.0 mi WNW 4.6 mph - N/A   Mostly Cloudy
9:53 PM 21.9 °F - 17.1 °F 82% 30.38 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:53 PM 21.0 °F - 16.0 °F 81% 30.37 in 10.0 mi Calm Calm - N/A   Overcast
11:53 PM 21.0 °F - 17.1 °F 85% 30.36 in 10.0 mi Calm Calm - N/A   Overcast