Weather History for Great Falls, MT

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Sunday, September 11, 2011

  Actual Average Record
Temperature  
Mean Temperature 69 °F 58 °F  
Max Temperature 91 °F 72 °F 93 °F (1919)
Min Temperature 47 °F 43 °F 29 °F (1989)
Degree Days  
Heating Degree Days 0 8  
Month to date heating degree days 33 71  
Since 1 July heating degree days 73 192  
Cooling Degree Days 4 1  
Month to date cooling degree days 22 13  
Year to date cooling degree days 326 289  
Growing Degree Days 20 (Base 50)    
Moisture  
Dew Point 31 °F    
Average Humidity 33    
Maximum Humidity 57    
Minimum Humidity 9    
Precipitation  
Precipitation 0.00 in 0.05 in 1.29 in (1978)
Month to date precipitation 0.10 0.57  
Year to date precipitation 13.51 11.90  
Snow  
Snow 0.00 in 0.10 in 2.00 in (1949)
Month to date snowfall 0.0 0.3  
Since 1 July snowfall 0.0 0.6  
Since 1 September snowfall 0.0 0.3  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.93 in    
Wind  
Wind Speed 11 mph (WSW)    
Max Wind Speed 33 mph    
Max Gust Speed 44 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 11, 2011 Rise Set
Actual Time 6:57 AM MDT 7:46 PM MDT
Civil Twilight 6:26 AM MDT 8:17 PM MDT
Nautical Twilight 5:48 AM MDT 8:54 PM MDT
Astronomical Twilight 5:09 AM MDT 9:33 PM MDT
Moon 7:06 PM MDT (9/11) 6:20 AM MDT (9/11)
Length of Visible Light 13h 50m
Length of Day
12h 48m
Full, 100% of the Moon is Illuminated
Sep 11
Full
Sep 12
Full
Sep 20
Last Quarter
Sep 27
New
Oct 3
First Quarter

Hourly Weather History & Observations

Time (MDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 55.0 °F 26.1 °F 33% 29.99 in 10.0 mi SSW 3.5 mph - N/A   Clear
1:53 AM 53.1 °F 27.0 °F 37% 29.99 in 10.0 mi SW 8.1 mph - N/A   Clear
2:53 AM 50.0 °F 27.0 °F 41% 29.99 in 10.0 mi Calm Calm - N/A   Clear
3:53 AM 53.1 °F 28.0 °F 38% 29.97 in 10.0 mi SW 9.2 mph - N/A   Clear
4:53 AM 48.0 °F 28.0 °F 46% 29.99 in 10.0 mi SW 8.1 mph - N/A   Clear
5:53 AM 50.0 °F 28.0 °F 43% 29.98 in 10.0 mi SW 9.2 mph - N/A   Clear
6:53 AM 50.0 °F 28.9 °F 44% 29.98 in 10.0 mi SSW 9.2 mph - N/A   Clear
8:53 AM 61.0 °F 30.0 °F 31% 29.97 in 10.0 mi WSW 8.1 mph - N/A   Clear
9:53 AM 69.1 °F 30.9 °F 24% 29.95 in 10.0 mi SW 6.9 mph - N/A   Clear
10:53 AM 75.9 °F 30.9 °F 19% 29.92 in 10.0 mi SSW 6.9 mph - N/A   Clear
11:53 AM 82.0 °F 28.9 °F 14% 29.89 in 10.0 mi SW 8.1 mph - N/A   Clear
12:53 PM 84.2 °F 30.2 °F 14% 29.96 in 10.0 mi SW 12.7 mph - N/A   Clear
1:53 PM 88.0 °F 28.0 °F 12% 29.85 in 10.0 mi WSW 11.5 mph - N/A   Clear
2:53 PM 90.0 °F 27.0 °F 10% 29.83 in 10.0 mi Variable 6.9 mph 17.3 mph N/A   Clear
3:53 PM 91.0 °F 27.0 °F 10% 29.81 in 10.0 mi West 16.1 mph 24.2 mph N/A   Clear
4:53 PM 89.1 °F 24.1 °F 9% 29.81 in 10.0 mi West 12.7 mph 19.6 mph N/A   Clear
5:53 PM 88.0 °F 24.1 °F 10% 29.81 in 10.0 mi WNW 12.7 mph - N/A   Clear
6:53 PM 82.0 °F 25.0 °F 12% 29.83 in 10.0 mi NW 9.2 mph - N/A   Clear
7:53 PM 73.9 °F 27.0 °F 18% 29.86 in 10.0 mi NW 8.1 mph - N/A   Clear
9:53 PM 69.1 °F 45.0 °F 42% 29.92 in 6.0 mi NNW 15.0 mph 25.3 mph N/A   Haze
10:29 PM 64.4 °F 46.4 °F 52% 30.06 in 9.0 mi NNW 25.3 mph 39.1 mph N/A   Scattered Clouds
10:53 PM 61.0 °F 45.0 °F 56% 30.02 in 10.0 mi NNW 24.2 mph 34.5 mph N/A   Clear
11:53 PM 57.0 °F 42.1 °F 57% 30.09 in 10.0 mi NNW 17.3 mph 28.8 mph N/A   Clear