Helena, MT

10:39 PM MST on February 24, 2017 (GMT -0700)
Helena Regional

Weather History for KHLN - September, 2012

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Thursday, September 20, 2012

  Actual Average Record
Temperature  
Mean Temperature 64 °F 56 °F  
Max Temperature 82 °F 71 °F 90 °F (1922)
Min Temperature 45 °F 42 °F 20 °F (1983)
Degree Days  
Heating Degree Days 1 9  
Month to date heating degree days 76 125  
Since 1 July heating degree days 97 194  
Cooling Degree Days 0 0  
Month to date cooling degree days 5 22  
Year to date cooling degree days 529 405  
Growing Degree Days 13 (Base 50)    
Moisture  
Dew Point 30 °F    
Average Humidity 37    
Maximum Humidity 58    
Minimum Humidity 15    
Precipitation  
Precipitation 0.00 in 0.03 in 1.00 in (1941)
Month to date precipitation 0.00 0.77  
Year to date precipitation 6.47 9.32  
Snow  
Snow 0.00 in 0.00 in 1.40 in (1968)
Month to date snowfall 0.0 0.7  
Since 1 July snowfall 0.0 1.0  
Since 1 September snowfall 0.0 0.7  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.13 in    
Wind  
Wind Speed 3 mph (WNW)    
Max Wind Speed 10 mph    
Max Gust Speed 13 mph    
Visibility 6 miles    
Events      
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. 20, 2012 Rise Set
Actual Time 7:12 AM MDT 7:28 PM MDT
Civil Twilight 6:42 AM MDT 7:58 PM MDT
Nautical Twilight 6:07 AM MDT 8:34 PM MDT
Astronomical Twilight 5:30 AM MDT 9:10 PM MDT
Moon 12:56 PM MDT (9/20) 10:11 PM MDT (9/20)
Length of Visible Light 13h 15m
Length of Day
12h 15m
Waxing Crescent, 27% of the Moon is Illuminated
Sep 20
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 62.1 °F - 27.0 °F 26% 30.12 in 7.0 mi WSW 6.9 mph - N/A   Clear
1:53 AM 59.0 °F - 28.0 °F 31% 30.13 in 7.0 mi Calm Calm - N/A   Clear
2:53 AM 60.1 °F - 27.0 °F 28% 30.12 in 5.0 mi SW 6.9 mph - N/A   Haze
3:53 AM 52.0 °F - 30.9 °F 45% 30.14 in 7.0 mi SW 3.5 mph - N/A   Clear
4:53 AM 48.9 °F - 30.0 °F 48% 30.16 in 7.0 mi Calm Calm - N/A   Clear
5:53 AM 46.0 °F 44.8 °F 32.0 °F 58% 30.16 in 7.0 mi East 3.5 mph - N/A   Clear
6:53 AM 46.4 °F 44.3 °F 30.2 °F 53% 30.18 in 6.0 mi SW 4.6 mph - N/A   Smoke
7:53 AM 46.9 °F - 30.9 °F 54% 30.19 in 4.0 mi WNW 3.5 mph - N/A   Smoke
8:53 AM 54.0 °F - 30.9 °F 41% 30.19 in 4.0 mi NNW 4.6 mph - N/A   Smoke
9:53 AM 57.0 °F - 33.1 °F 40% 30.21 in 5.0 mi Calm Calm - N/A   Smoke
10:53 AM 63.0 °F - 32.0 °F 31% 30.21 in 5.0 mi Calm Calm - N/A   Smoke
11:53 AM 66.0 °F - 30.9 °F 27% 30.18 in 5.0 mi Calm Calm - N/A   Smoke
12:53 PM 71.1 °F - 28.9 °F 21% 30.14 in 6.0 mi East 4.6 mph - N/A   Smoke
1:53 PM 75.9 °F - 28.9 °F 18% 30.12 in 5.0 mi Variable 3.5 mph - N/A   Smoke
2:53 PM 80.1 °F - 30.0 °F 16% 30.08 in 5.0 mi NNE 6.9 mph - N/A   Smoke
3:53 PM 81.0 °F - 28.9 °F 15% 30.08 in 6.0 mi Variable 4.6 mph - N/A   Smoke
4:53 PM 81.0 °F - 28.9 °F 15% 30.06 in 6.0 mi Calm Calm - N/A   Smoke
5:53 PM 80.1 °F - 32.0 °F 17% 30.07 in 6.0 mi NNE 5.8 mph - N/A   Smoke
6:53 PM 79.0 °F - 28.9 °F 16% 30.07 in 6.0 mi Calm Calm - N/A   Smoke
7:53 PM 71.1 °F - 34.0 °F 26% 30.10 in 7.0 mi Calm Calm - N/A   Smoke
8:53 PM 66.9 °F - 30.0 °F 25% 30.11 in 8.0 mi WNW 4.6 mph - N/A   Smoke
9:53 PM 62.1 °F - 30.0 °F 30% 30.13 in 8.0 mi WNW 5.8 mph - N/A   Smoke
10:53 PM 64.0 °F - 30.9 °F 29% 30.12 in 8.0 mi WSW 4.6 mph - N/A   Smoke
11:53 PM 59.0 °F - 30.9 °F 35% 30.14 in 10.0 mi North 3.5 mph - N/A   Clear