Weather History for Butte, MT

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Sunday, December 16, 2012

  Actual Average Record
Temperature  
Mean Temperature 19 °F 17 °F  
Max Temperature 27 °F 29 °F 58 °F (1980)
Min Temperature 11 °F 5 °F -36 °F (1964)
Degree Days  
Heating Degree Days 46 48  
Month to date heating degree days 654 753  
Since 1 July heating degree days 2916 3243  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 121 81  
Moisture  
Dew Point 10 °F    
Average Humidity 63    
Maximum Humidity 84    
Minimum Humidity 42    
Precipitation  
Precipitation T in 0.01 in 0.48 in (1927)
Month to date precipitation 0.24 0.26  
Year to date precipitation 9.00 12.52  
Snow  
Snow 0.00 in - - ()
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.75 in    
Wind  
Wind Speed 5 mph (West)    
Max Wind Speed 20 mph    
Max Gust Speed 25 mph    
Visibility 9 miles    
Events Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Dec. 16, 2012 Rise Set
Actual Time 8:06 AM MST 4:45 PM MST
Civil Twilight 7:31 AM MST 5:20 PM MST
Nautical Twilight 6:53 AM MST 5:58 PM MST
Astronomical Twilight 6:17 AM MST 6:34 PM MST
Moon 10:32 AM MST (12/16) 9:15 PM MST (12/16)
Length of Visible Light 9h 48m
Length of Day
8h 39m
Waxing Crescent, 16% of the Moon is Illuminated
Dec 16
Waxing Crescent
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 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 12.9 °F - 9.0 °F 84% 29.75 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:53 AM 16.0 °F 8.8 °F 10.9 °F 81% 29.73 in 7.0 mi NW 4.6 mph - N/A   Overcast
2:53 AM 19.0 °F - 12.9 °F 77% 29.71 in 9.0 mi Calm Calm - N/A   Overcast
3:53 AM 19.9 °F 12.1 °F 12.9 °F 74% 29.70 in 10.0 mi North 5.8 mph - N/A   Overcast
4:53 AM 24.1 °F - 12.9 °F 62% 29.70 in 10.0 mi Calm Calm - N/A   Overcast
5:53 AM 24.8 °F 17.9 °F 14.0 °F 64% 29.58 in 10.0 mi NNE 5.8 mph - N/A   Overcast
6:53 AM 21.9 °F 17.2 °F 14.0 °F 72% 29.74 in 10.0 mi Variable 3.5 mph - N/A   Overcast
7:53 AM 23.0 °F - 14.0 °F 68% 29.78 in 10.0 mi Calm Calm - N/A   Overcast
8:53 AM 21.0 °F 14.6 °F 12.9 °F 71% 29.82 in 10.0 mi NNE 4.6 mph - N/A   Scattered Clouds
9:53 AM 23.0 °F 18.4 °F 12.9 °F 65% 29.84 in 10.0 mi Variable 3.5 mph - N/A   Partly Cloudy
10:53 AM 26.1 °F 19.4 °F 12.9 °F 58% 29.84 in 10.0 mi West 5.8 mph - N/A   Mostly Cloudy
11:53 AM 25.0 °F 14.2 °F 14.0 °F 63% 29.84 in 2.5 mi West 11.5 mph - 0.00 in Snow Light Snow
12:03 PM 24.8 °F 14.6 °F 14.0 °F 64% 29.67 in 1.8 mi WSW 10.4 mph 18.4 mph 0.00 in Snow Light Snow
12:08 PM 24.8 °F 14.6 °F 12.2 °F 59% 29.66 in 4.0 mi West 10.4 mph - 0.00 in Snow Light Snow
12:19 PM 26.6 °F 14.3 °F 8.6 °F 47% 29.66 in 10.0 mi West 16.1 mph 20.7 mph 0.00 in   Mostly Cloudy
12:53 PM 27.0 °F 15.2 °F 7.0 °F 43% 29.83 in 10.0 mi WSW 15.0 mph 24.2 mph 0.00 in   Scattered Clouds
1:53 PM 26.1 °F 16.8 °F 7.0 °F 44% 29.81 in 10.0 mi WSW 9.2 mph 21.9 mph N/A   Clear
2:53 PM 26.1 °F 16.8 °F 8.1 °F 47% 29.80 in 10.0 mi WSW 9.2 mph - N/A   Mostly Cloudy
3:53 PM 25.0 °F 15.5 °F 8.1 °F 49% 29.81 in 10.0 mi West 9.2 mph 16.1 mph N/A   Mostly Cloudy
4:53 PM 23.0 °F - 6.1 °F 48% 29.80 in 10.0 mi Calm Calm - N/A   Clear
5:53 PM 17.1 °F 11.7 °F 5.0 °F 59% 29.81 in 10.0 mi WSW 3.5 mph - N/A   Scattered Clouds
6:53 PM 15.1 °F 4.2 °F 3.0 °F 59% 29.82 in 10.0 mi South 8.1 mph - N/A   Clear
7:53 PM 21.0 °F 11.4 °F 6.1 °F 53% 29.77 in 10.0 mi SSE 8.1 mph - N/A   Clear
8:53 PM 15.1 °F - 5.0 °F 64% 29.76 in 10.0 mi Calm Calm - N/A   Clear
9:53 PM 15.1 °F - 5.0 °F 64% 29.73 in 10.0 mi Calm Calm - N/A   Clear
10:53 PM 21.9 °F - 7.0 °F 53% 29.64 in 10.0 mi Calm Calm - N/A   Overcast
11:53 PM 21.0 °F - 9.0 °F 60% 29.64 in 10.0 mi Calm Calm - N/A   Overcast