Great Falls, MT

3:28 AM MDT on September 27, 2016 (GMT -0600)
Great Falls International

Weather History for KGTF - September, 2012

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Monday, September 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 58 °F 56 °F  
Max Temperature 78 °F 70 °F 92 °F (2009)
Min Temperature 38 °F 42 °F 26 °F (1965)
Degree Days  
Heating Degree Days 7 10  
Month to date heating degree days 82 126  
Since 1 July heating degree days 122 247  
Cooling Degree Days 0 1  
Month to date cooling degree days 13 19  
Year to date cooling degree days 477 295  
Growing Degree Days 8 (Base 50)    
Moisture  
Dew Point 32 °F    
Average Humidity 45    
Maximum Humidity 70    
Minimum Humidity 19    
Precipitation  
Precipitation 0.00 in 0.05 in 1.09 in (1996)
Month to date precipitation 0.00 0.86  
Year to date precipitation 9.79 12.19  
Snow  
Snow 0.00 in 0.10 in 4.50 in (1988)
Month to date snowfall 0.0 0.5  
Since 1 July snowfall 0.0 0.8  
Since 1 September snowfall 0.0 0.5  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.12 in    
Wind  
Wind Speed 6 mph (WSW)    
Max Wind Speed 17 mph    
Max Gust Speed 22 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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Date:

Astronomy

Sep. 17, 2012 Rise Set
Actual Time 7:06 AM MDT 7:32 PM MDT
Civil Twilight 6:35 AM MDT 8:03 PM MDT
Nautical Twilight 5:59 AM MDT 8:39 PM MDT
Astronomical Twilight 5:21 AM MDT 9:17 PM MDT
Moon 9:12 AM MDT (9/17) 8:02 PM MDT (9/17)
Length of Visible Light 13h 27m
Length of Day
12h 26m
Waxing Crescent, 4% of the Moon is Illuminated
Sep 17
Waxing Crescent
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New

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 48.0 °F - 30.9 °F 52% 30.20 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 41.0 °F 38.0 °F 28.9 °F 62% 30.20 in 10.0 mi SSW 4.6 mph - N/A   Clear
2:53 AM 42.1 °F 39.2 °F 30.0 °F 62% 30.19 in 10.0 mi WSW 4.6 mph - N/A   Clear
3:53 AM 39.9 °F 35.8 °F 30.0 °F 68% 30.20 in 10.0 mi SW 5.8 mph - N/A   Clear
4:53 AM 39.9 °F 35.1 °F 30.0 °F 68% 30.19 in 10.0 mi SW 6.9 mph - N/A   Partly Cloudy
5:53 AM 39.9 °F 36.7 °F 30.0 °F 68% 30.19 in 10.0 mi SW 4.6 mph - N/A   Clear
6:53 AM 39.9 °F - 30.0 °F 68% 30.19 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 41.0 °F - 30.9 °F 67% 30.19 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 48.9 °F - 33.1 °F 54% 30.18 in 10.0 mi SSW 3.5 mph - N/A   Clear
9:53 AM 55.9 °F - 34.0 °F 44% 30.17 in 10.0 mi SSW 3.5 mph - N/A   Clear
10:53 AM 63.0 °F - 34.0 °F 34% 30.14 in 10.0 mi SSW 6.9 mph - N/A   Clear
11:53 AM 66.9 °F - 33.1 °F 28% 30.12 in 10.0 mi SSW 5.8 mph - N/A   Clear
12:53 PM 71.1 °F - 33.1 °F 25% 30.09 in 10.0 mi West 9.2 mph - N/A   Clear
1:53 PM 73.9 °F - 33.1 °F 22% 30.09 in 10.0 mi NW 11.5 mph 20.7 mph N/A   Clear
2:53 PM 75.9 °F - 34.0 °F 22% 30.06 in 10.0 mi NW 10.4 mph 17.3 mph N/A   Clear
3:53 PM 78.1 °F - 32.0 °F 19% 30.05 in 10.0 mi NW 8.1 mph 17.3 mph N/A   Clear
4:53 PM 77.0 °F - 32.0 °F 19% 30.04 in 10.0 mi NW 9.2 mph - N/A   Clear
5:53 PM 75.9 °F - 30.9 °F 19% 30.04 in 10.0 mi NNW 10.4 mph - N/A   Clear
6:53 PM 73.0 °F - 32.0 °F 22% 30.05 in 10.0 mi NW 4.6 mph - N/A   Clear
7:53 PM 64.0 °F - 30.9 °F 29% 30.07 in 10.0 mi Calm Calm - N/A   Clear
8:53 PM 62.1 °F - 30.9 °F 31% 30.06 in 10.0 mi Calm Calm - N/A   Clear
9:53 PM 57.9 °F - 32.0 °F 37% 30.06 in 10.0 mi SSE 5.8 mph - N/A   Clear
10:53 PM 52.0 °F - 32.0 °F 47% 30.06 in 10.0 mi SSW 9.2 mph - N/A   Clear
11:53 PM 54.0 °F - 32.0 °F 43% 30.05 in 10.0 mi SW 11.5 mph - N/A   Clear