Weather History for Helena, MT

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Monday, February 10, 2014

  Actual Average Record
Temperature  
Mean Temperature 14 °F 27 °F  
Max Temperature 21 °F 37 °F 66 °F (1951)
Min Temperature 6 °F 16 °F -28 °F (1981)
Degree Days  
Heating Degree Days 51 38  
Month to date heating degree days 624 391  
Since 1 July heating degree days 4788 4909  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 6 °F    
Average Humidity 72    
Maximum Humidity 88    
Minimum Humidity 56    
Precipitation  
Precipitation T in 0.01 in 0.38 in (1899)
Month to date precipitation 0.55 0.10  
Year to date precipitation 1.10 0.46  
Snow  
Snow 0.50 in 0.20 in 7.00 in (1899)
Month to date snowfall 6.5 1.9  
Since 1 July snowfall 18.0 24.2  
Snow Depth 5.00 in    
Sea Level Pressure  
Sea Level Pressure 30.27 in    
Wind  
Wind Speed 1 mph (West)    
Max Wind Speed 8 mph    
Max Gust Speed 9 mph    
Visibility 8 miles    
Events Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Feb. 10, 2014 Rise Set
Actual Time 7:39 AM MST 5:45 PM MST
Civil Twilight 7:07 AM MST 6:17 PM MST
Nautical Twilight 6:32 AM MST 6:52 PM MST
Astronomical Twilight 5:57 AM MST 7:27 PM MST
Moon 2:11 PM MST (2/10) 4:41 AM MST (2/10)
Length of Visible Light 11h 09m
Length of Day
10h 06m
Waxing Gibbous, 85% of the Moon is Illuminated
Feb 10
Waxing Gibbous
Feb 14
Full
Feb 22
Last Quarter
Mar 1
New
Mar 8
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 7.0 °F - 1.0 °F 77% 30.31 in 10.0 mi Calm Calm - N/A   Overcast
1:53 AM 8.1 °F - 1.9 °F 76% 30.31 in 10.0 mi Calm Calm - N/A   Overcast
2:53 AM 9.0 °F - 3.0 °F 77% 30.30 in 4.0 mi Calm Calm - 0.00 in Snow Light Snow
3:38 AM 6.8 °F -0.1 °F 3.2 °F 85% 30.06 in 2.0 mi North 3.5 mph - 0.00 in Snow Light Snow
3:53 AM 7.0 °F - 3.0 °F 84% 30.32 in 2.5 mi Calm Calm - 0.00 in Snow Light Snow
4:09 AM 6.8 °F - 3.2 °F 85% 30.05 in 2.5 mi Calm Calm - 0.00 in Snow Light Snow
4:18 AM 6.8 °F - 1.4 °F 79% 30.05 in 3.0 mi Calm Calm - 0.00 in Snow Light Snow
4:53 AM 8.1 °F 1.4 °F 3.0 °F 80% 30.31 in 4.0 mi WNW 3.5 mph - 0.00 in Snow Light Snow
5:53 AM 8.1 °F - 3.0 °F 80% 30.32 in 9.0 mi Calm Calm - 0.00 in   Overcast
6:53 AM 8.1 °F - 3.0 °F 80% 30.35 in 10.0 mi Calm Calm - 0.00 in   Overcast
7:53 AM 9.0 °F 2.4 °F 3.9 °F 80% 30.35 in 10.0 mi South 3.5 mph - N/A   Overcast
8:53 AM 10.0 °F - 3.9 °F 76% 30.36 in 10.0 mi Calm Calm - N/A   Overcast
9:53 AM 10.0 °F - 3.9 °F 76% 30.37 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:53 AM 14.0 °F - 3.9 °F 64% 30.37 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:53 AM 16.0 °F - 5.0 °F 62% 30.37 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:53 PM 18.0 °F 12.7 °F 7.0 °F 62% 30.34 in 10.0 mi North 3.5 mph - N/A   Mostly Cloudy
1:53 PM 19.0 °F - 7.0 °F 59% 30.32 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:53 PM 17.1 °F - 8.1 °F 68% 30.31 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:53 PM 19.0 °F - 9.0 °F 65% 30.29 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:53 PM 19.0 °F - 9.0 °F 65% 30.27 in 10.0 mi Calm Calm - N/A   Clear
5:53 PM 17.1 °F - 9.0 °F 71% 30.25 in 10.0 mi Calm Calm - N/A   Clear
6:53 PM 16.0 °F 7.4 °F 9.0 °F 74% 30.25 in 10.0 mi West 5.8 mph - N/A   Clear
7:53 PM 16.0 °F 7.4 °F 9.0 °F 74% 30.23 in 10.0 mi West 5.8 mph - N/A   Scattered Clouds
8:53 PM 17.1 °F - 10.0 °F 74% 30.21 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:53 PM 16.0 °F - 10.9 °F 81% 30.18 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:53 PM 17.1 °F 11.7 °F 10.9 °F 77% 30.16 in 9.0 mi WSW 3.5 mph - N/A   Overcast
11:53 PM 12.9 °F 6.9 °F 9.0 °F 84% 30.15 in 8.0 mi East 3.5 mph - N/A   Partly Cloudy