History for Helena, MT

Thursday, December 1, 2011 — View Current Conditions
Thursday, December 1, 2011
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Daily Weekly Monthly Custom
  Actual Average Record
Temperature
Mean Temperature 19 °F 25 °F  
Max Temperature 29 °F 35 °F 60 °F (2008)
Min Temperature 8 °F 16 °F -25 °F (1985)
Degree Days
Heating Degree Days 46 40  
Month to date heating degree days 46 40  
Since 1 July heating degree days 1718 1922  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 358 406  
Moisture
Dew Point 13 °F    
Average Humidity 73    
Maximum Humidity 88    
Minimum Humidity 57    
Precipitation
Precipitation 0.00 in 0.02 in 0.62 in (1917)
Month to date precipitation 0.00 0.02  
Year to date precipitation 13.21 10.84  
Snow
Snow 0.00 in 0.20 in 9.50 in (1978)
Month to date snowfall 0.0 0.2  
Since 1 July snowfall 12.0 9.0  
Snow Depth 0.00 in    
Sea Level Pressure
Sea Level Pressure 30.61 in    
Wind
Wind Speed 2 mph (SW)    
Max Wind Speed 12 mph    
Max Gust Speed 13 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary
Daily Graph
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Astronomy
May. 19, 2013 Rise Set
Actual Time 7:51 AM MST 4:42 PM MST
Civil Twilight 7:16 AM MST 5:16 PM MST
Nautical Twilight 6:39 AM MST 5:54 PM MST
Astronomical Twilight 6:02 AM MST 6:30 PM MST
Moon 12:22 PM MST (12/1) No Moon Set
Length Of Visible Light 9h 59m
Length of Day
8h 50m
Waxing Crescent, 44% of the Moon is Illuminated
Dec 1
Waxing Crescent
Dec 2
First Quarter
Dec 10
Full
Dec 17
Last Quarter
Dec 24
New
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Hourly 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 14.0 °F 63% 30.77 in 10.0 mi West 4.6 mph - N/A   Mostly Cloudy
1:53 AM 21.0 °F 14.6 °F 12.9 °F 71% 30.79 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
2:53 AM 21.0 °F 12.4 °F 12.9 °F 71% 30.80 in 10.0 mi WSW 6.9 mph - N/A   Mostly Cloudy
3:53 AM 18.0 °F - 12.0 °F 78% 30.82 in 10.0 mi Calm Calm - N/A   Clear
4:53 AM 15.1 °F - 10.9 °F 84% 30.82 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 14.0 °F 8.2 °F 10.0 °F 84% 30.82 in 10.0 mi South 3.5 mph - N/A   Clear
6:53 AM 12.9 °F 6.9 °F 9.0 °F 84% 30.81 in 10.0 mi South 3.5 mph - N/A   Clear
7:53 AM 12.0 °F - 9.0 °F 88% 30.83 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 12.2 °F - 8.6 °F 85% 30.60 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 15.1 °F 9.4 °F 10.9 °F 84% 30.80 in 10.0 mi NW 3.5 mph - N/A   Clear
10:53 AM 21.0 °F - 12.9 °F 71% 30.77 in 10.0 mi Calm Calm - N/A   Clear
11:53 AM 21.9 °F - 12.9 °F 68% 30.73 in 10.0 mi Calm Calm - N/A   Clear
12:53 PM 26.1 °F - 14.0 °F 60% 30.66 in 10.0 mi Calm Calm - N/A   Clear
1:53 PM 26.6 °F - 15.8 °F 64% 30.44 in 10.0 mi Calm Calm - N/A   Clear
2:53 PM 28.0 °F 24.2 °F 16.0 °F 61% 30.58 in 10.0 mi ESE 3.5 mph - N/A   Clear
3:53 PM 28.0 °F 24.2 °F 18.0 °F 66% 30.56 in 10.0 mi SSE 3.5 mph - N/A   Clear
4:53 PM 26.1 °F - 17.1 °F 69% 30.54 in 10.0 mi Calm Calm - N/A   Clear
5:53 PM 24.1 °F - 17.1 °F 75% 30.52 in 10.0 mi Calm Calm - N/A   Clear
6:53 PM 23.0 °F 18.4 °F 16.0 °F 74% 30.49 in 10.0 mi South 3.5 mph - N/A   Clear
7:53 PM 21.9 °F 17.2 °F 16.0 °F 78% 30.45 in 10.0 mi South 3.5 mph - N/A   Clear
8:53 PM 19.0 °F 13.9 °F 14.0 °F 81% 30.42 in 10.0 mi Variable 3.5 mph - N/A   Clear
9:53 PM 17.6 °F - 14.0 °F 86% 30.15 in 10.0 mi Calm Calm - N/A   Clear
10:53 PM 19.9 °F 14.9 °F 14.0 °F 78% 30.30 in 10.0 mi NNW 3.5 mph - N/A   Clear
11:53 PM 21.9 °F 13.4 °F 15.1 °F 75% 30.27 in 10.0 mi West 6.9 mph - N/A   Clear
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