Weather History for Helena, MT

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Sunday, November 25, 2012

  Actual Average Record
Temperature  
Mean Temperature 32 °F 28 °F  
Max Temperature 39 °F 38 °F 64 °F (1949)
Min Temperature 25 °F 18 °F -15 °F (1985)
Degree Days  
Heating Degree Days 33 37  
Month to date heating degree days 747 784  
Since 1 July heating degree days 1522 1692  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 531 406  
Moisture  
Dew Point 20 °F    
Average Humidity 54    
Maximum Humidity 75    
Minimum Humidity 33    
Precipitation  
Precipitation T in 0.02 in 1.30 in (1896)
Month to date precipitation 1.75 0.41  
Year to date precipitation 8.87 10.74  
Snow  
Snow T in 0.20 in 13.00 in (1896)
Month to date snowfall 17.0 3.7  
Since 1 July snowfall 17.0 7.7  
Since 1 September snowfall 17.0 7.4  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.17 in    
Wind  
Wind Speed 7 mph (West)    
Max Wind Speed 24 mph    
Max Gust Speed 31 mph    
Visibility 10 miles    
Events Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Nov. 25, 2012 Rise Set
Actual Time 7:44 AM MST 4:45 PM MST
Civil Twilight 7:10 AM MST 5:19 PM MST
Nautical Twilight 6:33 AM MST 5:56 PM MST
Astronomical Twilight 5:57 AM MST 6:32 PM MST
Moon 3:10 PM MST (11/25) 4:55 AM MST (11/25)
Length of Visible Light 10h 08m
Length of Day
9h 00m
Waxing Gibbous, 93% of the Moon is Illuminated
Nov 25
Waxing Gibbous
Nov 28
Full
Dec 6
Last Quarter
Dec 13
New
Dec 19
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 37.0 °F - 28.9 °F 73% 30.04 in 10.0 mi Calm Calm - N/A   Overcast
1:53 AM 36.0 °F - 28.9 °F 76% 30.03 in 10.0 mi Calm Calm - N/A   Overcast
2:53 AM 36.0 °F 32.1 °F 28.9 °F 76% 30.03 in 9.0 mi WSW 4.6 mph - 0.00 in Snow Light Snow
3:53 AM 36.0 °F 32.1 °F 28.9 °F 76% 30.03 in 10.0 mi NNW 4.6 mph - 0.00 in   Overcast
4:53 AM 36.0 °F 32.1 °F 24.1 °F 62% 30.04 in 10.0 mi WSW 4.6 mph - 0.00 in Snow Light Snow
5:53 AM 34.0 °F 31.0 °F 28.0 °F 79% 30.06 in 10.0 mi West 3.5 mph - 0.00 in   Overcast
6:53 AM 34.0 °F 28.8 °F 27.0 °F 75% 30.08 in 10.0 mi WSW 5.8 mph - N/A   Overcast
7:53 AM 34.0 °F 31.0 °F 25.0 °F 70% 30.09 in 10.0 mi WSW 3.5 mph - N/A   Overcast
8:53 AM 35.1 °F 31.0 °F 21.9 °F 59% 30.11 in 10.0 mi West 4.6 mph - N/A   Overcast
9:53 AM 36.0 °F 29.6 °F 19.0 °F 50% 30.13 in 10.0 mi WNW 8.1 mph - N/A   Overcast
10:53 AM 36.0 °F 29.0 °F 17.1 °F 46% 30.14 in 10.0 mi West 9.2 mph - N/A   Overcast
11:53 AM 39.0 °F 29.9 °F 12.9 °F 34% 30.13 in 10.0 mi West 17.3 mph 21.9 mph N/A   Clear
12:53 PM 36.0 °F 24.4 °F 15.1 °F 43% 30.13 in 10.0 mi WNW 23.0 mph 27.6 mph N/A   Clear
1:53 PM 37.0 °F 27.4 °F 15.1 °F 41% 30.14 in 10.0 mi WNW 17.3 mph 26.5 mph N/A   Clear
2:53 PM 37.0 °F 28.5 °F 12.9 °F 37% 30.16 in 10.0 mi West 13.8 mph - N/A   Scattered Clouds
3:53 PM 36.0 °F 28.0 °F 14.0 °F 41% 30.19 in 10.0 mi West 11.5 mph 21.9 mph N/A   Overcast
4:53 PM 34.0 °F 26.6 °F 14.0 °F 44% 30.23 in 10.0 mi WNW 9.2 mph - N/A   Overcast
5:53 PM 32.0 °F 22.5 °F 16.0 °F 52% 30.26 in 10.0 mi WNW 12.7 mph - N/A   Mostly Cloudy
6:53 PM 30.9 °F 26.2 °F 18.0 °F 59% 30.30 in 10.0 mi NW 4.6 mph - N/A   Overcast
7:53 PM 28.9 °F 22.8 °F 17.1 °F 61% 30.32 in 10.0 mi West 5.8 mph - N/A   Scattered Clouds
8:53 PM 28.9 °F 23.9 °F 17.1 °F 61% 30.34 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
9:53 PM 30.0 °F - 17.1 °F 59% 30.35 in 10.0 mi Calm Calm - N/A   Overcast
10:53 PM 28.9 °F 23.9 °F 16.0 °F 58% 30.36 in 10.0 mi WSW 4.6 mph - N/A   Clear
11:53 PM 26.1 °F 20.5 °F 16.0 °F 66% 30.37 in 10.0 mi NE 4.6 mph - N/A   Clear