Weather History for Helena, MT

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Saturday, November 24, 2012

  Actual Average Record
Temperature  
Mean Temperature 38 °F 28 °F  
Max Temperature 50 °F 38 °F 63 °F (1986)
Min Temperature 25 °F 19 °F -17 °F (1880)
Degree Days  
Heating Degree Days 27 37  
Month to date heating degree days 714 747  
Since 1 July heating degree days 1489 1655  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 531 406  
Moisture  
Dew Point 27 °F    
Average Humidity 65    
Maximum Humidity 81    
Minimum Humidity 49    
Precipitation  
Precipitation 0.00 in 0.02 in 1.23 in (1892)
Month to date precipitation 1.75 0.39  
Year to date precipitation 8.87 10.72  
Snow  
Snow 0.00 in 0.20 in 6.00 in (1897)
Month to date snowfall 17.0 3.5  
Since 1 July snowfall 17.0 7.5  
Since 1 September snowfall 17.0 7.2  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.11 in    
Wind  
Wind Speed 5 mph (WSW)    
Max Wind Speed 18 mph    
Max Gust Speed 22 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Nov. 24, 2012 Rise Set
Actual Time 7:43 AM MST 4:45 PM MST
Civil Twilight 7:09 AM MST 5:19 PM MST
Nautical Twilight 6:32 AM MST 5:57 PM MST
Astronomical Twilight 5:56 AM MST 6:33 PM MST
Moon 2:41 PM MST (11/24) 3:53 AM MST (11/24)
Length of Visible Light 10h 10m
Length of Day
9h 02m
Waxing Gibbous, 87% of the Moon is Illuminated
Nov 24
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 27.0 °F 21.6 °F 21.9 °F 81% 30.17 in 10.0 mi West 4.6 mph - N/A   Clear
1:53 AM 28.0 °F - 21.9 °F 78% 30.14 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 30.0 °F 24.1 °F 21.9 °F 72% 30.13 in 10.0 mi South 5.8 mph - N/A   Clear
3:53 AM 26.1 °F - 21.0 °F 81% 30.14 in 10.0 mi Calm Calm - N/A   Clear
4:53 AM 28.0 °F 24.2 °F 21.9 °F 78% 30.13 in 10.0 mi West 3.5 mph - N/A   Clear
5:53 AM 27.0 °F - 21.9 °F 81% 30.14 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 28.0 °F 24.2 °F 23.0 °F 81% 30.15 in 10.0 mi Variable 3.5 mph - N/A   Clear
7:53 AM 26.1 °F - 21.9 °F 84% 30.15 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 27.0 °F - 21.9 °F 81% 30.16 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 37.9 °F 34.4 °F 27.0 °F 65% 30.12 in 10.0 mi SSE 4.6 mph - N/A   Clear
10:53 AM 39.9 °F 37.8 °F 28.9 °F 65% 30.12 in 10.0 mi SSW 3.5 mph - N/A   Partly Cloudy
11:53 AM 45.0 °F 40.6 °F 34.0 °F 65% 30.10 in 10.0 mi NW 8.1 mph - N/A   Mostly Cloudy
12:53 PM 48.9 °F - 33.1 °F 54% 30.09 in 10.0 mi WNW 10.4 mph - N/A   Partly Cloudy
1:53 PM 48.9 °F - 30.9 °F 50% 30.09 in 10.0 mi NW 13.8 mph - N/A   Mostly Cloudy
2:53 PM 46.9 °F - 28.9 °F 50% 30.07 in 10.0 mi WNW 16.1 mph - N/A   Mostly Cloudy
3:53 PM 45.0 °F 39.3 °F 28.0 °F 52% 30.09 in 10.0 mi West 11.5 mph - N/A   Overcast
4:53 PM 43.0 °F 40.3 °F 30.9 °F 62% 30.11 in 10.0 mi West 4.6 mph - N/A   Overcast
5:53 PM 43.0 °F 36.0 °F 28.9 °F 58% 30.12 in 10.0 mi WSW 13.8 mph 17.3 mph N/A   Overcast
6:53 PM 42.8 °F 39.3 °F 30.2 °F 61% 30.00 in 10.0 mi SW 5.8 mph - N/A   Overcast
7:53 PM 41.0 °F - 28.9 °F 62% 30.13 in 10.0 mi Calm Calm - N/A   Overcast
8:53 PM 39.9 °F - 28.0 °F 63% 30.12 in 10.0 mi Calm Calm - N/A   Overcast
9:53 PM 39.9 °F - 28.9 °F 65% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
10:53 PM 39.9 °F 37.8 °F 28.0 °F 63% 30.07 in 10.0 mi SW 3.5 mph - N/A   Overcast
11:53 PM 37.0 °F 34.5 °F 28.9 °F 73% 30.06 in 10.0 mi WNW 3.5 mph - N/A   Overcast