Weather History for Butte, MT

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Friday, September 20, 2013

  Actual Average Record
Temperature  
Mean Temperature 51 °F 50 °F  
Max Temperature 72 °F 66 °F 83 °F (1918)
Min Temperature 30 °F 34 °F 8 °F (1983)
Degree Days  
Heating Degree Days 14 15  
Month to date heating degree days 102 223  
Since 1 July heating degree days 169 451  
Cooling Degree Days 0 0  
Month to date cooling degree days 8 0  
Year to date cooling degree days 104 79  
Moisture  
Dew Point 30 °F    
Average Humidity 54    
Maximum Humidity 92    
Minimum Humidity 16    
Precipitation  
Precipitation 0.00 in 0.03 in 0.63 in (1968)
Month to date precipitation 1.07 0.70  
Year to date precipitation 8.36 10.58  
Sea Level Pressure  
Sea Level Pressure 29.96 in    
Wind  
Wind Speed 4 mph (SE)    
Max Wind Speed 15 mph    
Max Gust Speed 21 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Astronomy

Sep. 20, 2013 Rise Set
Actual Time 7:14 AM MDT 7:30 PM MDT
Civil Twilight 6:44 AM MDT 8:00 PM MDT
Nautical Twilight 6:09 AM MDT 8:35 PM MDT
Astronomical Twilight 5:33 AM MDT 9:11 PM MDT
Moon 7:58 PM MDT (9/20) 8:40 AM MDT (9/20)
Length of Visible Light 13h 15m
Length of Day
12h 16m
Full, 98% of the Moon is Illuminated
Sep 20
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

Hourly Weather History & Observations

Time (MDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 37.0 °F 33.3 °F 32.0 °F 82% 30.11 in 10.0 mi SE 4.6 mph - N/A   Clear
1:53 AM 35.1 °F - 30.9 °F 85% 30.10 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 34.0 °F 31.0 °F 30.0 °F 85% 30.10 in 10.0 mi SE 3.5 mph - N/A   Clear
3:53 AM 34.0 °F 31.0 °F 30.0 °F 85% 30.09 in 10.0 mi South 3.5 mph - N/A   Clear
4:53 AM 33.1 °F 27.7 °F 30.0 °F 89% 30.08 in 10.0 mi SSE 5.8 mph - N/A   Clear
5:53 AM 32.0 °F 27.5 °F 28.9 °F 88% 30.08 in 10.0 mi SE 4.6 mph - N/A   Clear
6:53 AM 30.9 °F 27.5 °F 28.9 °F 92% 30.08 in 10.0 mi ESE 3.5 mph - N/A   Clear
7:53 AM 30.0 °F 26.5 °F 28.0 °F 92% 30.10 in 10.0 mi SSE 3.5 mph - N/A   Clear
8:53 AM 36.0 °F 33.3 °F 30.9 °F 82% 30.09 in 10.0 mi ESE 3.5 mph - N/A   Clear
9:53 AM 45.0 °F - 33.1 °F 63% 30.06 in 10.0 mi Calm Calm - N/A   Clear
10:53 AM 53.1 °F - 34.0 °F 48% 30.02 in 10.0 mi North 3.5 mph - N/A   Clear
11:53 AM 59.0 °F - 33.1 °F 38% 29.97 in 10.0 mi Calm Calm - N/A   Clear
12:53 PM 63.0 °F - 34.0 °F 34% 29.94 in 10.0 mi Calm Calm - N/A   Clear
1:53 PM 66.0 °F - 32.0 °F 28% 29.91 in 10.0 mi ESE 6.9 mph - N/A   Clear
2:53 PM 68.0 °F - 30.9 °F 25% 29.89 in 10.0 mi SE 5.8 mph - N/A   Clear
3:53 PM 71.1 °F - 26.1 °F 19% 29.84 in 10.0 mi SE 11.5 mph 20.7 mph N/A   Clear
4:53 PM 71.1 °F - 23.0 °F 16% 29.83 in 10.0 mi SSW 9.2 mph - N/A   Clear
5:53 PM 71.1 °F - 24.1 °F 17% 29.81 in 10.0 mi SSW 11.5 mph - N/A   Clear
6:53 PM 68.0 °F - 27.0 °F 21% 29.81 in 10.0 mi South 12.7 mph - N/A   Clear
7:53 PM 63.0 °F - 27.0 °F 26% 29.83 in 10.0 mi South 4.6 mph - N/A   Clear
8:53 PM 55.0 °F - 30.9 °F 40% 29.84 in 10.0 mi Calm Calm - N/A   Clear
9:53 PM 52.0 °F - 30.0 °F 43% 29.82 in 10.0 mi East 4.6 mph - N/A   Clear
10:53 PM 48.0 °F - 32.0 °F 54% 29.80 in 10.0 mi Calm Calm - N/A   Clear
11:53 PM 46.0 °F - 30.0 °F 54% 29.79 in 10.0 mi Calm Calm - N/A   Clear