Great Falls, MT

4:58 AM MDT on May 25, 2017 (GMT -0600)
Great Falls International

Weather History for KGTF - September, 2012

Change the Weather History Date:

Sunday, September 30, 2012

  Actual Average Record
Temperature  
Mean Temperature 59 °F 51 °F  
Max Temperature 73 °F 64 °F 91 °F (1992)
Min Temperature 45 °F 38 °F 22 °F (1985)
Degree Days  
Heating Degree Days 6 14  
Month to date heating degree days 137 286  
Since 1 July heating degree days 177 407  
Cooling Degree Days 0 0  
Month to date cooling degree days 20 21  
Year to date cooling degree days 484 297  
Growing Degree Days 8 (Base 50)    
Moisture  
Dew Point 37 °F    
Average Humidity 45    
Maximum Humidity 61    
Minimum Humidity 29    
Precipitation  
Precipitation 0.00 in 0.04 in 0.92 in (1977)
Month to date precipitation T 1.42  
Year to date precipitation 9.79 12.75  
Snow  
Snow 0.00 in 0.10 in 1.90 in (1950)
Month to date snowfall 0.0 1.2  
Since 1 July snowfall 0.0 1.5  
Since 1 September snowfall 0.0 1.2  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.17 in    
Wind  
Wind Speed 8 mph (WNW)    
Max Wind Speed 16 mph    
Max Gust Speed 22 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

Search for Another Location

Airport or City:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Sep. 30, 2012 Rise Set
Actual Time 7:23 AM MDT 7:05 PM MDT
Civil Twilight 6:53 AM MDT 7:36 PM MDT
Nautical Twilight 6:17 AM MDT 8:11 PM MDT
Astronomical Twilight 5:41 AM MDT 8:48 PM MDT
Moon 7:03 PM MDT (9/30) 8:04 AM MDT (9/30)
Length of Visible Light 12h 43m
Length of Day
11h 41m
Full, 100% of the Moon is Illuminated
Sep 30
Full
Oct 8
Last Quarter
Oct 15
New
Oct 21
First Quarter
Oct 29
Full

Hourly Weather History & Observations

Time (MDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 54.0 °F 35.1 °F 49% 30.03 in 10.0 mi SSW 8.1 mph - N/A   Clear
1:53 AM 52.0 °F 35.1 °F 53% 30.05 in 10.0 mi SW 9.2 mph - N/A   Clear
2:53 AM 53.1 °F 36.0 °F 52% 30.05 in 10.0 mi SSW 9.2 mph - N/A   Clear
3:53 AM 46.9 °F 34.0 °F 61% 30.08 in 10.0 mi SW 5.8 mph - N/A   Clear
4:53 AM 50.0 °F 35.1 °F 57% 30.08 in 10.0 mi SW 6.9 mph - N/A   Clear
5:53 AM 48.9 °F 35.1 °F 59% 30.09 in 10.0 mi SW 8.1 mph - N/A   Clear
6:53 AM 52.0 °F 36.0 °F 54% 30.10 in 10.0 mi SSW 8.1 mph - N/A   Scattered Clouds
7:53 AM 50.0 °F 35.1 °F 57% 30.14 in 10.0 mi SSW 6.9 mph - N/A   Clear
8:53 AM 59.0 °F 37.0 °F 44% 30.16 in 10.0 mi NW 12.7 mph 21.9 mph N/A   Clear
9:53 AM 59.0 °F 39.0 °F 48% 30.18 in 10.0 mi NW 10.4 mph - N/A   Clear
10:53 AM 60.1 °F 39.0 °F 46% 30.21 in 10.0 mi NNW 12.7 mph - N/A   Clear
11:53 AM 63.0 °F 37.9 °F 40% 30.21 in 10.0 mi NNW 12.7 mph 19.6 mph N/A   Clear
12:53 PM 64.9 °F 39.0 °F 39% 30.20 in 10.0 mi Variable 4.6 mph - N/A   Clear
1:53 PM 70.0 °F 37.9 °F 31% 30.18 in 10.0 mi NNW 10.4 mph - N/A   Clear
2:53 PM 71.1 °F 37.9 °F 30% 30.17 in 10.0 mi Calm Calm - N/A   Clear
3:53 PM 71.1 °F 39.0 °F 31% 30.19 in 10.0 mi NNE 15.0 mph - N/A   Clear
4:53 PM 68.0 °F 37.9 °F 33% 30.19 in 10.0 mi NE 11.5 mph - N/A   Clear
5:53 PM 66.9 °F 37.9 °F 34% 30.21 in 10.0 mi NE 11.5 mph - N/A   Clear
6:53 PM 63.0 °F 37.9 °F 40% 30.22 in 10.0 mi NNE 6.9 mph - N/A   Clear
7:53 PM 55.9 °F 37.0 °F 49% 30.28 in 10.0 mi NNE 6.9 mph - N/A   Clear
8:53 PM 55.0 °F 37.9 °F 53% 30.27 in 10.0 mi East 4.6 mph - N/A   Clear
9:53 PM 53.1 °F 37.9 °F 57% 30.29 in 10.0 mi East 4.6 mph - N/A   Clear
10:53 PM 52.0 °F 37.0 °F 57% 30.29 in 10.0 mi Calm Calm - N/A   Clear
11:53 PM 48.0 °F 36.0 °F 63% 30.29 in 10.0 mi Calm Calm - N/A   Clear