Great Falls, MT

9:26 PM MDT on March 27, 2017 (GMT -0600)
Great Falls International

Weather History for KGTF - September, 2011

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Tuesday, September 20, 2011

  Actual Average Record
Temperature  
Mean Temperature 48 °F 54 °F  
Max Temperature 64 °F 68 °F 93 °F (1917)
Min Temperature 32 °F 41 °F 24 °F (1995)
Degree Days  
Heating Degree Days 17 11  
Month to date heating degree days 103 158  
Since 1 July heating degree days 143 279  
Cooling Degree Days 0 0  
Month to date cooling degree days 23 20  
Year to date cooling degree days 327 296  
Moisture  
Dew Point 33 °F    
Average Humidity 64    
Maximum Humidity 100    
Minimum Humidity 27    
Precipitation  
Precipitation 0.00 in 0.04 in 0.72 in (1968)
Month to date precipitation 0.20 0.99  
Year to date precipitation 13.61 12.32  
Snow  
Snow 0.00 in 0.10 in 1.30 in (1968)
Month to date snowfall 0.0 0.6  
Since 1 July snowfall 0.0 0.9  
Since 1 September snowfall 0.0 0.6  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.27 in    
Wind  
Wind Speed 6 mph (South)    
Max Wind Speed 13 mph    
Max Gust Speed 15 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. 20, 2011 Rise Set
Actual Time 7:09 AM MDT 7:27 PM MDT
Civil Twilight 6:38 AM MDT 7:58 PM MDT
Nautical Twilight 6:02 AM MDT 8:34 PM MDT
Astronomical Twilight 5:24 AM MDT 9:11 PM MDT
Moon No Moon Rise 3:18 PM MDT (9/20)
Length of Visible Light 13h 19m
Length of Day
12h 18m
Waning Gibbous, 48% of the Moon is Illuminated
Sep 20
Waning Gibbous
Sep 27
New
Oct 3
First Quarter
Oct 11
Full
Oct 19
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 41.0 °F 34.3 °F 35.6 °F 81% 30.21 in 10.0 mi SSW 11.5 mph - N/A   Clear
1:53 AM 41.0 °F 34.7 °F 35.1 °F 79% 30.26 in 10.0 mi SSW 10.4 mph - N/A   Clear
2:53 AM 37.9 °F 30.5 °F 34.0 °F 86% 30.28 in 10.0 mi SW 11.5 mph - N/A   Clear
3:53 AM 37.4 °F 30.3 °F 35.6 °F 93% 30.21 in 10.0 mi SW 10.4 mph - N/A   Clear
4:53 AM 39.9 °F 32.5 °F 35.1 °F 83% 30.27 in 10.0 mi SW 12.7 mph - N/A   Clear
5:53 AM 33.1 °F 26.9 °F 30.9 °F 92% 30.31 in 10.0 mi West 6.9 mph - N/A   Clear
6:53 AM 34.0 °F 28.0 °F 33.1 °F 96% 30.33 in 10.0 mi WSW 6.9 mph - N/A   Clear
7:53 AM 36.0 °F 29.6 °F 34.0 °F 93% 30.33 in 10.0 mi SW 8.1 mph - N/A   Clear
8:53 AM 43.0 °F 38.2 °F 37.9 °F 82% 30.33 in 10.0 mi SW 8.1 mph - N/A   Clear
9:53 AM 48.0 °F - 37.9 °F 68% 30.35 in 10.0 mi West 4.6 mph - N/A   Clear
10:53 AM 52.0 °F - 37.9 °F 59% 30.35 in 10.0 mi Calm Calm - N/A   Clear
11:53 AM 55.9 °F - 37.0 °F 49% 30.33 in 10.0 mi SSW 3.5 mph - N/A   Clear
12:53 PM 59.0 °F - 30.9 °F 35% 30.30 in 10.0 mi Variable 3.5 mph - N/A   Clear
1:53 PM 59.0 °F - 32.0 °F 36% 30.29 in 10.0 mi East 5.8 mph - N/A   Clear
2:53 PM 60.1 °F - 32.0 °F 35% 30.28 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:53 PM 62.6 °F - 30.2 °F 30% 30.23 in 10.0 mi Calm Calm - N/A   Clear
4:53 PM 63.0 °F - 28.9 °F 28% 30.22 in 10.0 mi Calm Calm - N/A   Clear
5:53 PM 62.1 °F - 30.0 °F 30% 30.24 in 10.0 mi ENE 3.5 mph - N/A   Clear
6:53 PM 57.9 °F - 30.0 °F 35% 30.24 in 10.0 mi East 5.8 mph - N/A   Clear
7:53 PM 52.0 °F - 32.0 °F 47% 30.24 in 10.0 mi East 8.1 mph - N/A   Clear
8:53 PM 48.9 °F - 32.0 °F 52% 30.23 in 10.0 mi ESE 9.2 mph - N/A   Clear
9:53 PM 46.9 °F - 32.0 °F 56% 30.22 in 10.0 mi East 8.1 mph - N/A   Clear
10:53 PM 48.0 °F - 32.0 °F 54% 30.20 in 10.0 mi ESE 9.2 mph - N/A   Clear
11:53 PM 46.0 °F 41.4 °F 33.1 °F 61% 30.19 in 10.0 mi East 9.2 mph - N/A   Clear