Weather History for Butte, MT

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Monday, December 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 26 °F 17 °F  
Max Temperature 33 °F 29 °F 53 °F (1980)
Min Temperature 18 °F 5 °F -38 °F (1964)
Degree Days  
Heating Degree Days 39 48  
Month to date heating degree days 693 801  
Since 1 July heating degree days 2955 3291  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 121 81  
Moisture  
Dew Point 18 °F    
Average Humidity 71    
Maximum Humidity 84    
Minimum Humidity 57    
Precipitation  
Precipitation T in 0.02 in 0.20 in (1982)
Month to date precipitation 0.24 0.28  
Year to date precipitation 9.00 12.54  
Sea Level Pressure  
Sea Level Pressure 29.50 in    
Wind  
Wind Speed 7 mph (West)    
Max Wind Speed 22 mph    
Max Gust Speed 29 mph    
Visibility 8 miles    
Events Fog , Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 17, 2012 Rise Set
Actual Time 8:06 AM MST 4:46 PM MST
Civil Twilight 7:32 AM MST 5:20 PM MST
Nautical Twilight 6:54 AM MST 5:58 PM MST
Astronomical Twilight 6:17 AM MST 6:35 PM MST
Moon 11:03 AM MST (12/17) 10:27 PM MST (12/17)
Length of Visible Light 9h 48m
Length of Day
8h 39m
Waxing Crescent, 25% of the Moon is Illuminated
Dec 17
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 21.9 °F 17.2 °F 10.9 °F 63% 29.56 in 10.0 mi WNW 3.5 mph - N/A   Mostly Cloudy
1:53 AM 18.0 °F - 10.0 °F 71% 29.55 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:30 AM 23.0 °F - 15.8 °F 74% 29.40 in 2.5 mi Calm Calm - 0.00 in Snow Light Snow
2:38 AM 24.8 °F - 15.8 °F 69% 29.40 in 6.0 mi Calm Calm - 0.00 in Snow Light Snow
2:53 AM 25.0 °F 19.3 °F 17.1 °F 72% 29.49 in 4.0 mi Variable 4.6 mph - 0.00 in Snow Light Snow
3:30 AM 21.2 °F 14.9 °F 17.6 °F 86% 29.37 in 3.0 mi NNW 4.6 mph - 0.00 in Snow Light Snow
3:53 AM 21.0 °F 11.4 °F 17.1 °F 85% 29.49 in 10.0 mi WNW 8.1 mph - 0.00 in   Mostly Cloudy
4:53 AM 23.0 °F 18.4 °F 18.0 °F 81% 29.46 in 10.0 mi NNW 3.5 mph - N/A   Overcast
5:53 AM 25.0 °F 20.7 °F 18.0 °F 75% 29.45 in 10.0 mi North 3.5 mph - N/A   Partly Cloudy
6:53 AM 21.9 °F 17.2 °F 17.1 °F 82% 29.48 in 10.0 mi West 3.5 mph - N/A   Scattered Clouds
7:53 AM 27.0 °F 20.5 °F 17.1 °F 66% 29.44 in 10.0 mi ESE 5.8 mph - N/A   Mostly Cloudy
8:53 AM 30.0 °F 25.2 °F 21.0 °F 69% 29.46 in 10.0 mi Variable 4.6 mph - N/A   Overcast
9:53 AM 30.9 °F - 23.0 °F 72% 29.46 in 10.0 mi Calm Calm - N/A   Scattered Clouds
10:17 AM 30.2 °F 18.5 °F 24.8 °F 80% 29.37 in 1.2 mi NW 17.3 mph 24.2 mph N/A   Haze
10:22 AM 28.4 °F 17.0 °F 24.8 °F 86% 29.38 in 0.2 mi NW 15.0 mph 24.2 mph 0.00 in Fog , Snow Snow
10:53 AM 28.9 °F - 26.1 °F 89% 29.48 in 3.0 mi Calm Calm - 0.00 in Snow Light Snow
11:28 AM 28.4 °F 22.2 °F 24.8 °F 86% 29.38 in 2.5 mi South 5.8 mph - 0.00 in Snow Light Snow
11:39 AM 28.4 °F 22.2 °F 24.8 °F 86% 29.37 in 4.0 mi SSE 5.8 mph - 0.00 in Snow Light Snow
11:53 AM 28.9 °F 22.8 °F 24.1 °F 82% 29.49 in 10.0 mi SE 5.8 mph - 0.00 in   Mostly Cloudy
12:53 PM 30.9 °F 21.7 °F 21.9 °F 69% 29.47 in 10.0 mi SSW 11.5 mph - N/A   Mostly Cloudy
1:53 PM 32.0 °F 20.8 °F 19.9 °F 61% 29.49 in 9.0 mi WSW 17.3 mph 28.8 mph N/A   Overcast
2:53 PM 30.9 °F 21.7 °F 17.1 °F 57% 29.48 in 10.0 mi SW 11.5 mph - N/A   Scattered Clouds
5:53 PM 27.0 °F 18.0 °F 17.1 °F 66% 29.59 in 9.0 mi West 9.2 mph - N/A   Overcast
6:10 PM 26.6 °F 15.7 °F 19.4 °F 74% 29.49 in 7.0 mi West 12.7 mph 18.4 mph 0.00 in Snow Light Snow
6:53 PM 26.1 °F 16.8 °F 14.0 °F 60% 29.63 in 10.0 mi WNW 9.2 mph 25.3 mph 0.00 in   Overcast
7:53 PM 23.0 °F 13.9 °F 14.0 °F 68% 29.63 in 10.0 mi WNW 8.1 mph - N/A   Scattered Clouds
8:53 PM 21.0 °F - 12.9 °F 71% 29.64 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:17 PM 23.0 °F - 14.0 °F 68% 29.55 in 10.0 mi Calm Calm - N/A   Overcast
9:24 PM 23.0 °F - 14.0 °F 68% 29.55 in 10.0 mi Calm Calm - N/A   Overcast
9:53 PM 21.9 °F 12.5 °F 14.0 °F 72% 29.67 in 10.0 mi West 8.1 mph - N/A   Overcast
10:53 PM 21.0 °F 11.4 °F 10.9 °F 65% 29.70 in 10.0 mi WSW 8.1 mph - N/A   Clear
11:53 PM 21.0 °F 12.4 °F 7.0 °F 55% 29.71 in 10.0 mi West 6.9 mph - N/A   Clear