Helena, MT

10:25 AM MDT on March 28, 2017 (GMT -0600)
Helena Regional

Weather History for KHLN - September, 2011

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Tuesday, September 27, 2011

  Actual Average Record
Temperature  
Mean Temperature 66 °F 53 °F  
Max Temperature 87 °F 67 °F 88 °F (1963)
Min Temperature 44 °F 39 °F 23 °F (1961)
Degree Days  
Heating Degree Days 0 12  
Month to date heating degree days 101 201  
Since 1 July heating degree days 109 270  
Cooling Degree Days 1 0  
Month to date cooling degree days 25 22  
Year to date cooling degree days 357 405  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 37 °F    
Average Humidity 41    
Maximum Humidity 66    
Minimum Humidity 16    
Precipitation  
Precipitation 0.00 in 0.03 in 0.85 in (1982)
Month to date precipitation 0.04 1.01  
Year to date precipitation 11.89 9.56  
Snow  
Snow 0.00 in 0.00 in 11.30 in (1965)
Month to date snowfall 0.0 1.1  
Since 1 July snowfall 0.0 1.4  
Since 1 September snowfall 0.0 1.1  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 5 mph (West)    
Max Wind Speed 20 mph    
Max Gust Speed 30 mph    
Visibility 10 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. 27, 2011 Rise Set
Actual Time 7:21 AM MDT 7:15 PM MDT
Civil Twilight 6:50 AM MDT 7:46 PM MDT
Nautical Twilight 6:15 AM MDT 8:21 PM MDT
Astronomical Twilight 5:39 AM MDT 8:57 PM MDT
Moon 7:45 AM MDT (9/27) 7:01 PM MDT (9/27)
Length of Visible Light 12h 55m
Length of Day
11h 54m
New Moon, 0% of the Moon is Illuminated
Sep 27
New Moon
Oct 3
First Quarter
Oct 11
Full
Oct 19
Last Quarter
Oct 26
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 54.0 °F - 37.0 °F 53% 30.04 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 51.1 °F - 37.0 °F 59% 30.04 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 50.0 °F - 36.0 °F 59% 30.04 in 10.0 mi Calm Calm - N/A   Clear
3:53 AM 50.0 °F - 37.0 °F 61% 30.04 in 10.0 mi Calm Calm - N/A   Clear
4:53 AM 48.2 °F - 37.4 °F 66% 30.06 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 48.9 °F - 36.0 °F 61% 30.04 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 46.0 °F 44.8 °F 36.0 °F 68% 30.05 in 10.0 mi West 3.5 mph - N/A   Clear
7:53 AM 46.0 °F - 36.0 °F 68% 30.09 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 53.1 °F - 37.0 °F 55% 30.08 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 57.0 °F - 37.0 °F 47% 30.07 in 10.0 mi Calm Calm - N/A   Clear
10:53 AM 62.1 °F - 37.0 °F 39% 30.05 in 10.0 mi Calm Calm - N/A   Clear
11:53 AM 68.0 °F - 37.4 °F 33% 30.03 in 10.0 mi Variable 3.5 mph - N/A   Clear
12:53 PM 73.9 °F - 39.0 °F 28% 29.98 in 10.0 mi Variable 4.6 mph - N/A   Clear
1:53 PM 79.0 °F - 39.0 °F 24% 29.94 in 10.0 mi Variable 3.5 mph - N/A   Clear
2:53 PM 84.9 °F - 37.0 °F 18% 29.90 in 10.0 mi West 16.1 mph 26.5 mph N/A   Clear
3:53 PM 86.0 °F - 36.0 °F 17% 29.88 in 10.0 mi West 9.2 mph - N/A   Partly Cloudy
4:53 PM 84.9 °F - 36.0 °F 17% 29.88 in 10.0 mi WNW 12.7 mph 18.4 mph N/A   Scattered Clouds
5:53 PM 81.0 °F - 36.0 °F 20% 29.89 in 10.0 mi West 15.0 mph 20.7 mph N/A   Partly Cloudy
6:53 PM 79.0 °F - 36.0 °F 21% 29.91 in 10.0 mi WSW 8.1 mph - N/A   Scattered Clouds
7:53 PM 71.1 °F - 37.0 °F 29% 29.94 in 10.0 mi WNW 9.2 mph - N/A   Scattered Clouds
8:53 PM 69.1 °F - 37.9 °F 32% 29.96 in 10.0 mi East 6.9 mph - N/A   Clear
9:53 PM 63.0 °F - 37.9 °F 40% 30.00 in 10.0 mi Calm Calm - N/A   Clear
10:53 PM 64.0 °F - 39.9 °F 41% 30.01 in 10.0 mi Variable 4.6 mph - N/A   Clear
11:53 PM 62.1 °F - 42.1 °F 48% 30.03 in 10.0 mi Calm Calm - N/A   Clear