Weather History for Helena, MT

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Friday, March 8, 2013

  Actual Average Record
Temperature  
Mean Temperature 36 °F 34 °F  
Max Temperature 50 °F 45 °F 63 °F (2004)
Min Temperature 21 °F 22 °F -26 °F (1951)
Degree Days  
Heating Degree Days 29 31  
Month to date heating degree days 248 260  
Since 1 July heating degree days 5367 5821  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 15 °F    
Average Humidity 49    
Maximum Humidity 77    
Minimum Humidity 20    
Precipitation  
Precipitation 0.00 in 0.01 in 0.48 in (1898)
Month to date precipitation 0.05 0.12  
Year to date precipitation 0.72 0.78  
Snow  
Snow 0.00 in 0.20 in 5.00 in (1898)
Month to date snowfall 0.1 1.6  
Since 1 July snowfall 35.8 28.9  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.03 in    
Wind  
Wind Speed 3 mph (WNW)    
Max Wind Speed 14 mph    
Max Gust Speed 17 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Mar. 08, 2013 Rise Set
Actual Time 6:53 AM MST 6:24 PM MST
Civil Twilight 6:23 AM MST 6:54 PM MST
Nautical Twilight 5:48 AM MST 7:29 PM MST
Astronomical Twilight 5:13 AM MST 8:05 PM MST
Moon 4:50 AM MST (3/8) 3:15 PM MST (3/8)
Length of Visible Light 12h 30m
Length of Day
11h 30m
Waning Crescent, 11% of the Moon is Illuminated
Mar 8
Waning Crescent
Mar 11
New
Mar 19
First Quarter
Mar 27
Full
Apr 2
Last Quarter

Hourly Weather History & Observations

Time (MST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 28.9 °F 22.8 °F 18.0 °F 64% 30.09 in 10.0 mi West 5.8 mph - N/A   Clear
1:53 AM 26.1 °F 21.9 °F 17.1 °F 69% 30.10 in 10.0 mi WSW 3.5 mph - N/A   Clear
2:53 AM 26.1 °F - 17.1 °F 69% 30.08 in 10.0 mi Calm Calm - N/A   Clear
3:53 AM 23.0 °F 18.4 °F 16.0 °F 74% 30.08 in 10.0 mi West 3.5 mph - N/A   Clear
4:53 AM 25.0 °F - 16.0 °F 69% 30.07 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 23.0 °F - 16.0 °F 74% 30.09 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 21.9 °F - 15.1 °F 75% 30.10 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 24.8 °F 20.5 °F 17.6 °F 74% 29.95 in 10.0 mi North 3.5 mph - N/A   Clear
8:53 AM 28.0 °F - 19.0 °F 69% 30.09 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 32.0 °F - 19.9 °F 61% 30.06 in 10.0 mi Calm Calm - N/A   Clear
10:53 AM 36.0 °F 33.3 °F 18.0 °F 48% 30.05 in 10.0 mi NNW 3.5 mph - N/A   Clear
11:53 AM 41.0 °F - 18.0 °F 40% 30.01 in 10.0 mi Calm Calm - N/A   Clear
12:53 PM 44.1 °F - 17.1 °F 34% 29.98 in 10.0 mi Calm Calm - N/A   Clear
1:53 PM 46.0 °F - 15.1 °F 29% 29.96 in 10.0 mi Calm Calm - N/A   Clear
2:53 PM 48.9 °F - 15.1 °F 26% 29.93 in 10.0 mi North 4.6 mph - N/A   Clear
3:53 PM 48.9 °F - 12.0 °F 23% 29.94 in 10.0 mi Variable 4.6 mph - N/A   Clear
4:53 PM 48.9 °F - 12.0 °F 23% 29.93 in 10.0 mi North 8.1 mph - N/A   Clear
5:53 PM 44.1 °F 39.0 °F 7.0 °F 22% 29.97 in 10.0 mi NW 9.2 mph - N/A   Clear
6:53 PM 37.0 °F 33.3 °F 10.0 °F 33% 30.01 in 10.0 mi West 4.6 mph - N/A   Clear
7:53 PM 34.0 °F 28.8 °F 10.9 °F 38% 30.03 in 10.0 mi West 5.8 mph - N/A   Clear
8:53 PM 33.1 °F 28.7 °F 15.1 °F 48% 30.05 in 10.0 mi West 4.6 mph - N/A   Clear
9:53 PM 33.1 °F 26.9 °F 14.0 °F 46% 30.06 in 10.0 mi West 6.9 mph - N/A   Clear
10:53 PM 33.1 °F - 12.9 °F 43% 30.06 in 10.0 mi Calm Calm - N/A   Clear
11:53 PM 35.1 °F 28.6 °F 12.0 °F 39% 30.05 in 10.0 mi WSW 8.1 mph - N/A   Clear