Weather History for Butte, MT

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Monday, September 30, 2013

  Actual Average Record
Temperature  
Mean Temperature 42 °F 46 °F  
Max Temperature 50 °F 62 °F 84 °F (1992)
Min Temperature 33 °F 31 °F 13 °F (1985)
Degree Days  
Heating Degree Days 23 19  
Month to date heating degree days 308 393  
Since 1 July heating degree days 375 621  
Cooling Degree Days 0 0  
Month to date cooling degree days 8 2  
Year to date cooling degree days 104 81  
Moisture  
Dew Point 32 °F    
Average Humidity 62    
Maximum Humidity 92    
Minimum Humidity 31    
Precipitation  
Precipitation 0.38 in 0.03 in 0.51 in (2009)
Month to date precipitation 2.99 1.00  
Year to date precipitation 10.28 10.88  
Sea Level Pressure  
Sea Level Pressure 29.77 in    
Wind  
Wind Speed 9 mph (WNW)    
Max Wind Speed 31 mph    
Max Gust Speed 40 mph    
Visibility 9 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

Sep. 30, 2013 Rise Set
Actual Time 7:27 AM MDT 7:11 PM MDT
Civil Twilight 6:57 AM MDT 7:41 PM MDT
Nautical Twilight 6:23 AM MDT 8:15 PM MDT
Astronomical Twilight 5:47 AM MDT 8:50 PM MDT
Moon 2:56 AM MDT (9/30) 4:54 PM MDT (9/30)
Length of Visible Light 12h 43m
Length of Day
11h 43m
Waning Crescent, 18% of the Moon is Illuminated
Sep 30
Waning Crescent
Oct 4
New
Oct 11
First Quarter
Oct 18
Full
Oct 26
Last Quarter

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 42.1 °F 40.2 °F 37.9 °F 85% 29.73 in 10.0 mi NNW 3.5 mph - 0.00 in   Overcast
1:53 AM 41.0 °F - 37.9 °F 89% 29.72 in 10.0 mi Calm Calm - 0.01 in Rain Light Rain
2:53 AM 42.1 °F 40.2 °F 39.0 °F 89% 29.72 in 10.0 mi NNE 3.5 mph - 0.01 in Rain Light Rain
3:53 AM 41.0 °F 38.0 °F 39.0 °F 93% 29.68 in 10.0 mi WNW 4.6 mph - 0.03 in   Overcast
4:53 AM 42.1 °F 37.1 °F 39.9 °F 92% 29.65 in 10.0 mi NW 8.1 mph - 0.02 in Rain Light Rain
5:53 AM 39.9 °F 37.8 °F 39.0 °F 97% 29.60 in 10.0 mi East 3.5 mph - 0.00 in   Partly Cloudy
6:53 AM 37.0 °F - 36.0 °F 96% 29.57 in 8.0 mi Calm Calm - N/A   Clear
7:01 AM 37.4 °F 32.8 °F 35.6 °F 93% 29.58 in 9.0 mi NNE 5.8 mph - N/A   Partly Cloudy
7:53 AM 39.9 °F 36.7 °F 37.9 °F 93% 29.57 in 10.0 mi West 4.6 mph - 0.00 in Rain Light Rain
8:27 AM 39.2 °F 29.8 °F 37.4 °F 93% 29.67 in 4.0 mi NW 18.4 mph 34.5 mph 0.13 in Rain Heavy Rain
8:53 AM 39.9 °F 31.8 °F 37.9 °F 93% 29.67 in 4.0 mi NW 15.0 mph 25.3 mph 0.20 in Rain Rain
9:53 AM 37.0 °F 26.7 °F 35.1 °F 93% 29.74 in 4.0 mi NNW 19.6 mph 24.2 mph 0.09 in Rain Rain
10:10 AM 35.6 °F 30.7 °F 33.8 °F 93% 29.75 in 6.0 mi NNW 5.8 mph - 0.02 in Rain Light Rain
10:36 AM 37.4 °F - 35.6 °F 93% 29.76 in 10.0 mi Calm Calm - 0.02 in Rain Light Rain
10:53 AM 39.0 °F 34.0 °F 33.1 °F 79% 29.74 in 10.0 mi Variable 6.9 mph - 0.02 in   Overcast
11:53 AM 44.1 °F 40.8 °F 39.9 °F 85% 29.74 in 10.0 mi Variable 5.8 mph - N/A   Mostly Cloudy
12:53 PM 45.0 °F 39.7 °F 26.1 °F 48% 29.75 in 10.0 mi WNW 10.4 mph - N/A   Mostly Cloudy
1:53 PM 48.0 °F - 24.1 °F 39% 29.76 in 10.0 mi West 13.8 mph 25.3 mph N/A   Scattered Clouds
2:53 PM 48.9 °F - 21.0 °F 33% 29.76 in 10.0 mi West 21.9 mph 29.9 mph N/A   Partly Cloudy
3:53 PM 48.9 °F - 19.9 °F 32% 29.81 in 10.0 mi West 17.3 mph 27.6 mph N/A   Mostly Cloudy
4:32 PM 44.6 °F 38.1 °F 28.4 °F 53% 29.86 in 10.0 mi SSW 13.8 mph 20.7 mph N/A   Partly Cloudy
4:53 PM 48.0 °F - 23.0 °F 37% 29.82 in 10.0 mi West 17.3 mph 28.8 mph N/A   Clear
5:53 PM 46.0 °F 41.0 °F 25.0 °F 44% 29.85 in 10.0 mi West 10.4 mph 18.4 mph N/A   Clear
6:53 PM 44.1 °F 38.6 °F 24.1 °F 45% 29.89 in 10.0 mi West 10.4 mph 23.0 mph N/A   Scattered Clouds
7:53 PM 43.0 °F 37.2 °F 26.1 °F 51% 29.92 in 10.0 mi WSW 10.4 mph 17.3 mph N/A   Partly Cloudy
8:53 PM 41.0 °F 36.4 °F 28.0 °F 60% 29.96 in 10.0 mi SE 6.9 mph - N/A   Mostly Cloudy
9:53 PM 42.1 °F 38.4 °F 26.1 °F 53% 29.98 in 10.0 mi SSW 5.8 mph - N/A   Scattered Clouds
10:53 PM 39.9 °F 35.8 °F 26.1 °F 58% 29.98 in 10.0 mi WSW 5.8 mph - N/A   Clear
11:53 PM 37.9 °F 33.5 °F 26.1 °F 62% 29.97 in 10.0 mi NE 5.8 mph - N/A   Clear