Weather History for Butte, MT

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Sunday, December 9, 2012

  Actual Average Record
Temperature  
Mean Temperature 7 °F 18 °F  
Max Temperature 21 °F 29 °F 57 °F (1957)
Min Temperature -7 °F 6 °F -40 °F (1972)
Degree Days  
Heating Degree Days 58 48  
Month to date heating degree days 339 417  
Since 1 July heating degree days 2601 2907  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 121 81  
Moisture  
Dew Point 1 °F    
Average Humidity 66    
Maximum Humidity 87    
Minimum Humidity 45    
Precipitation  
Precipitation T in 0.02 in 0.30 in (1904)
Month to date precipitation 0.16 0.16  
Year to date precipitation 8.92 12.42  
Sea Level Pressure  
Sea Level Pressure 30.35 in    
Wind  
Wind Speed 4 mph (North)    
Max Wind Speed 13 mph    
Max Gust Speed 20 mph    
Visibility 9 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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Astronomy

Dec. 09, 2012 Rise Set
Actual Time 8:00 AM MST 4:44 PM MST
Civil Twilight 7:26 AM MST 5:19 PM MST
Nautical Twilight 6:48 AM MST 5:56 PM MST
Astronomical Twilight 6:11 AM MST 6:33 PM MST
Moon 3:27 AM MST (12/9) 2:02 PM MST (12/9)
Length of Visible Light 9h 53m
Length of Day
8h 44m
Waning Crescent, 18% of the Moon is Illuminated
Dec 9
Waning Crescent
Dec 13
New
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Hourly Weather History & Observations

Time (MST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:23 AM 1.4 °F - -2.2 °F 85% 30.09 in 2.5 mi Calm Calm - N/A   Mostly Cloudy
12:32 AM 3.2 °F -4.2 °F -0.4 °F 85% 30.09 in 8.0 mi SE 3.5 mph - N/A   Overcast
12:53 AM 3.0 °F -6.4 °F -0.9 °F 84% 30.34 in 10.0 mi SE 4.6 mph - N/A   Overcast
1:53 AM 3.0 °F - -2.0 °F 80% 30.34 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:53 AM 1.0 °F - -2.9 °F 83% 30.38 in 10.0 mi Calm Calm - N/A   Clear
3:53 AM -0.9 °F -8.9 °F -5.1 °F 83% 30.40 in 10.0 mi South 3.5 mph - N/A   Clear
4:53 AM -2.0 °F - -8.0 °F 76% 30.41 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM -4.0 °F -12.4 °F -8.0 °F 83% 30.46 in 10.0 mi South 3.5 mph - N/A   Clear
6:53 AM -6.0 °F -14.7 °F -9.9 °F 83% 30.50 in 10.0 mi ESE 3.5 mph - N/A   Clear
7:53 AM -6.0 °F -18.6 °F -9.9 °F 83% 30.53 in 10.0 mi SSE 5.8 mph - N/A   Clear
8:53 AM -5.1 °F - -9.0 °F 83% 30.55 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM -0.0 °F - -4.0 °F 83% 30.56 in 10.0 mi Calm Calm - N/A   Clear
10:53 AM 3.9 °F - -0.9 °F 80% 30.52 in 10.0 mi Calm Calm - N/A   Clear
11:53 AM 9.0 °F - 3.0 °F 77% 30.48 in 10.0 mi Calm Calm - N/A   Clear
12:53 PM 17.1 °F 11.7 °F 3.9 °F 56% 30.41 in 10.0 mi North 3.5 mph - N/A   Clear
1:53 PM 18.0 °F 8.7 °F 1.9 °F 50% 30.38 in 10.0 mi NW 6.9 mph - N/A   Mostly Cloudy
2:53 PM 18.0 °F 11.1 °F 1.9 °F 50% 30.35 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy
3:53 PM 18.0 °F - 1.0 °F 48% 30.37 in 10.0 mi Calm Calm - N/A   Overcast
4:53 PM 19.0 °F 8.2 °F 1.9 °F 47% 30.34 in 10.0 mi WSW 9.2 mph - N/A   Mostly Cloudy
5:53 PM 19.0 °F 10.0 °F 1.9 °F 47% 30.34 in 10.0 mi West 6.9 mph - N/A   Overcast
6:53 PM 19.0 °F 12.3 °F 3.9 °F 52% 30.33 in 10.0 mi Variable 4.6 mph - N/A   Overcast
7:53 PM 19.0 °F 12.3 °F 6.1 °F 57% 30.32 in 10.0 mi North 4.6 mph - N/A   Overcast
8:53 PM 19.0 °F 10.0 °F 7.0 °F 59% 30.31 in 10.0 mi NNE 6.9 mph - N/A   Overcast
9:53 PM 19.0 °F 10.0 °F 9.0 °F 65% 30.27 in 10.0 mi North 6.9 mph - N/A   Overcast
10:53 PM 19.9 °F 11.1 °F 12.0 °F 71% 30.23 in 5.0 mi NNE 6.9 mph - 0.00 in Snow Light Snow
11:53 PM 21.0 °F 16.2 °F 15.1 °F 78% 30.21 in 3.0 mi North 3.5 mph - 0.00 in Snow Light Snow
11:58 PM 21.2 °F 16.4 °F 15.8 °F 80% 29.99 in 2.0 mi NNW 3.5 mph - 0.00 in Snow Light Snow