Weather History for Helena, MT

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Saturday, February 16, 2013

  Actual Average Record
Temperature  
Mean Temperature 36 °F 28 °F  
Max Temperature 48 °F 39 °F 59 °F (1977)
Min Temperature 24 °F 17 °F -30 °F (1956)
Degree Days  
Heating Degree Days 29 37  
Month to date heating degree days 513 617  
Since 1 July heating degree days 4722 5135  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 25 °F    
Average Humidity 65    
Maximum Humidity 88    
Minimum Humidity 42    
Precipitation  
Precipitation T in 0.01 in 0.39 in (1929)
Month to date precipitation 0.27 0.16  
Year to date precipitation 0.62 0.52  
Snow  
Snow T in 0.10 in 5.90 in (1959)
Month to date snowfall 5.8 2.9  
Since 1 July snowfall 35.2 25.2  
Snow Depth 1.00 in    
Sea Level Pressure  
Sea Level Pressure 30.11 in    
Wind  
Wind Speed 3 mph (West)    
Max Wind Speed 28 mph    
Max Gust Speed 35 mph    
Visibility 10 miles    
Events Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Feb. 16, 2013 Rise Set
Actual Time 7:29 AM MST 5:55 PM MST
Civil Twilight 6:58 AM MST 6:26 PM MST
Nautical Twilight 6:23 AM MST 7:01 PM MST
Astronomical Twilight 5:48 AM MST 7:36 PM MST
Moon 10:18 AM MST (2/16) 12:24 AM MST (2/16)
Length of Visible Light 11h 27m
Length of Day
10h 25m
Waxing Crescent, 40% of the Moon is Illuminated
Feb 16
Waxing Crescent
Feb 17
First Quarter
Feb 25
Full
Mar 4
Last Quarter
Mar 11
New

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 35.1 °F - 25.0 °F 67% 30.32 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 30.0 °F - 24.1 °F 79% 30.32 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 28.0 °F - 23.0 °F 81% 30.30 in 10.0 mi Calm Calm - N/A   Clear
3:53 AM 26.1 °F 21.9 °F 21.9 °F 84% 30.31 in 10.0 mi West 3.5 mph - N/A   Clear
4:53 AM 27.0 °F - 21.9 °F 81% 30.29 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 25.0 °F - 21.0 °F 85% 30.30 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 25.0 °F - 21.0 °F 85% 30.29 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 25.0 °F - 21.0 °F 85% 30.28 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 28.9 °F 25.2 °F 24.1 °F 82% 30.26 in 10.0 mi NW 3.5 mph - N/A   Clear
9:53 AM 32.0 °F 28.7 °F 25.0 °F 75% 30.22 in 10.0 mi NNW 3.5 mph - N/A   Clear
10:53 AM 35.1 °F - 24.1 °F 64% 30.21 in 10.0 mi Calm Calm - N/A   Clear
11:53 AM 39.0 °F 35.7 °F 25.0 °F 57% 30.17 in 10.0 mi WNW 4.6 mph - N/A   Clear
12:53 PM 43.0 °F - 26.1 °F 51% 30.11 in 10.0 mi Calm Calm - N/A   Clear
1:53 PM 45.0 °F - 27.0 °F 49% 30.07 in 10.0 mi Calm Calm - N/A   Clear
2:53 PM 46.9 °F - 27.0 °F 46% 30.02 in 10.0 mi ESE 5.8 mph - N/A   Clear
3:53 PM 48.0 °F - 26.1 °F 42% 29.99 in 10.0 mi SE 8.1 mph - N/A   Clear
4:53 PM 46.9 °F - 27.0 °F 46% 29.97 in 10.0 mi Calm Calm - N/A   Clear
5:53 PM 45.0 °F 42.6 °F 26.1 °F 48% 29.96 in 10.0 mi SSW 4.6 mph - N/A   Scattered Clouds
6:53 PM 41.0 °F 38.0 °F 26.1 °F 55% 29.94 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
7:53 PM 42.1 °F - 26.1 °F 53% 29.89 in 10.0 mi Calm Calm - N/A   Overcast
8:53 PM 35.1 °F 31.0 °F 26.1 °F 70% 29.89 in 10.0 mi West 4.6 mph - N/A   Clear
9:53 PM 35.1 °F 32.2 °F 25.0 °F 67% 29.85 in 10.0 mi WNW 3.5 mph - N/A   Clear
10:53 PM 35.1 °F 25.2 °F 26.1 °F 70% 29.86 in 10.0 mi West 16.1 mph 25.3 mph 0.00 in Snow Light Snow
11:53 PM 37.0 °F 27.7 °F 28.0 °F 70% 29.86 in 10.0 mi WSW 16.1 mph 25.3 mph 0.00 in   Overcast