Weather History for Butte, MT

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Sunday, December 23, 2012

  Actual Average Record
Temperature  
Mean Temperature 21 °F 17 °F  
Max Temperature 32 °F 29 °F 50 °F (1950)
Min Temperature 10 °F 5 °F -52 °F (1983)
Degree Days  
Heating Degree Days 44 48  
Month to date heating degree days 991 1089  
Since 1 July heating degree days 3253 3579  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 121 81  
Moisture  
Dew Point 14 °F    
Average Humidity 66    
Maximum Humidity 88    
Minimum Humidity 43    
Precipitation  
Precipitation T in 0.02 in 0.34 in (1955)
Month to date precipitation 0.24 0.38  
Year to date precipitation 9.00 12.64  
Sea Level Pressure  
Sea Level Pressure 29.90 in    
Wind  
Wind Speed 5 mph (South)    
Max Wind Speed 18 mph    
Max Gust Speed 29 mph    
Visibility 9 miles    
Events Fog , Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Dec. 23, 2012 Rise Set
Actual Time 8:09 AM MST 4:48 PM MST
Civil Twilight 7:35 AM MST 5:23 PM MST
Nautical Twilight 6:57 AM MST 6:01 PM MST
Astronomical Twilight 6:20 AM MST 6:37 PM MST
Moon 1:47 PM MST (12/23) 3:49 AM MST (12/23)
Length of Visible Light 9h 48m
Length of Day
8h 39m
Waxing Gibbous, 82% of the Moon is Illuminated
Dec 23
Waxing Gibbous
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
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 30.9 °F 24.3 °F 12.9 °F 47% 29.85 in 10.0 mi WSW 6.9 mph - N/A   Mostly Cloudy
1:09 AM 28.4 °F 17.0 °F 21.2 °F 74% 29.78 in 1.5 mi WNW 15.0 mph 28.8 mph 0.00 in Snow Light Snow
1:13 AM 26.6 °F 14.7 °F 21.2 °F 80% 29.78 in 0.8 mi West 15.0 mph 28.8 mph 0.00 in Snow Light Snow
1:23 AM 26.6 °F 21.2 °F 23.0 °F 86% 29.77 in 0.5 mi Variable 4.6 mph 23.0 mph 0.00 in Fog , Snow Snow
1:31 AM 26.6 °F 22.6 °F 23.0 °F 86% 29.78 in 1.0 mi SSW 3.5 mph - 0.00 in Snow Light Snow
1:36 AM 26.6 °F - 21.2 °F 80% 29.78 in 4.0 mi Calm Calm - 0.00 in Snow Light Snow
1:46 AM 24.8 °F 20.5 °F 21.2 °F 86% 29.78 in 10.0 mi ENE 3.5 mph - 0.00 in   Mostly Cloudy
1:53 AM 25.0 °F 19.3 °F 21.9 °F 88% 29.89 in 10.0 mi NE 4.6 mph - 0.00 in   Scattered Clouds
2:53 AM 27.0 °F 21.6 °F 14.0 °F 58% 29.88 in 10.0 mi Variable 4.6 mph - N/A   Clear
3:53 AM 26.1 °F 20.5 °F 12.9 °F 58% 29.91 in 10.0 mi ESE 4.6 mph - N/A   Mostly Cloudy
4:53 AM 19.0 °F - 10.9 °F 71% 29.97 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 18.0 °F - 9.0 °F 68% 29.99 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 10.9 °F - 5.0 °F 77% 30.05 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 10.9 °F - 5.0 °F 77% 30.06 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 12.9 °F 5.2 °F 6.1 °F 74% 30.05 in 9.0 mi Variable 4.6 mph - N/A   Mostly Cloudy
9:53 AM 18.0 °F - 9.0 °F 68% 30.05 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:53 AM 19.9 °F - 10.0 °F 65% 30.03 in 10.0 mi Calm Calm - N/A   Clear
11:53 AM 26.1 °F 21.9 °F 10.9 °F 53% 29.99 in 10.0 mi NNW 3.5 mph - N/A   Clear
12:53 PM 30.0 °F 25.2 °F 12.0 °F 47% 29.95 in 10.0 mi NNE 4.6 mph - N/A   Clear
1:53 PM 28.9 °F 23.9 °F 10.9 °F 47% 29.94 in 10.0 mi SE 4.6 mph - N/A   Clear
2:53 PM 30.0 °F 21.1 °F 10.9 °F 45% 29.91 in 10.0 mi South 10.4 mph - N/A   Clear
3:53 PM 27.0 °F 19.5 °F 10.0 °F 49% 29.91 in 10.0 mi South 6.9 mph - N/A   Clear
4:53 PM 26.1 °F 21.9 °F 9.0 °F 49% 29.92 in 10.0 mi SE 3.5 mph - N/A   Clear
5:53 PM 26.1 °F 20.5 °F 10.0 °F 51% 29.92 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
6:53 PM 26.1 °F 17.6 °F 10.9 °F 53% 29.94 in 10.0 mi SSW 8.1 mph - N/A   Overcast
7:53 PM 27.0 °F 18.0 °F 12.0 °F 53% 29.91 in 10.0 mi South 9.2 mph - N/A   Overcast
8:53 PM 27.0 °F - 12.9 °F 56% 29.87 in 10.0 mi Calm Calm - N/A   Overcast
9:53 PM 27.0 °F 18.7 °F 17.1 °F 66% 29.82 in 10.0 mi SE 8.1 mph - N/A   Overcast
10:53 PM 25.0 °F 13.6 °F 18.0 °F 75% 29.80 in 10.0 mi SSE 12.7 mph - N/A   Mostly Cloudy
11:53 PM 25.0 °F 16.3 °F 17.1 °F 72% 29.76 in 10.0 mi South 8.1 mph - N/A   Scattered Clouds