Helena, MT

11:30 AM MDT on September 20, 2017 (GMT -0600)
Helena Regional

Weather History for KHLN - September, 2011

Change the Weather History Date:

Saturday, September 24, 2011

  Actual Average Record
Temperature  
Mean Temperature 67 °F 54 °F  
Max Temperature 87 °F 69 °F 91 °F (2014)
Min Temperature 46 °F 40 °F 6 °F (1926)
Degree Days  
Heating Degree Days 0 11  
Month to date heating degree days 100 166  
Since 1 July heating degree days 108 235  
Cooling Degree Days 2 0  
Month to date cooling degree days 24 22  
Year to date cooling degree days 356 405  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 32 °F    
Average Humidity 35    
Maximum Humidity 60    
Minimum Humidity 10    
Precipitation  
Precipitation 0.00 in 0.03 in 1.20 in (1920)
Month to date precipitation 0.04 0.91  
Year to date precipitation 11.89 9.46  
Snow  
Snow 0.00 in 0.00 in 1.00 in (1910)
Month to date snowfall 0.0 0.9  
Since 1 July snowfall 0.0 1.2  
Since 1 September snowfall 0.0 0.9  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.03 in    
Wind  
Wind Speed 2 mph (North)    
Max Wind Speed 8 mph    
Max Gust Speed 9 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. 24, 2011 Rise Set
Actual Time 7:17 AM MDT 7:21 PM MDT
Civil Twilight 6:46 AM MDT 7:52 PM MDT
Nautical Twilight 6:11 AM MDT 8:27 PM MDT
Astronomical Twilight 5:35 AM MDT 9:03 PM MDT
Moon 3:46 AM MDT (9/24) 5:38 PM MDT (9/24)
Length of Visible Light 13h 05m
Length of Day
12h 04m
Waning Crescent, 11% of the Moon is Illuminated
Sep 24
Waning Crescent
Sep 27
New
Oct 3
First Quarter
Oct 11
Full
Oct 19
Last Quarter

Hourly Weather History & Observations

Time (MDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 59.0 °F 33.8 °F 39% 30.12 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 54.0 °F 35.1 °F 49% 30.07 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 54.0 °F 35.1 °F 49% 30.07 in 10.0 mi Calm Calm - N/A   Clear
3:53 AM 52.0 °F 34.0 °F 50% 30.07 in 10.0 mi Calm Calm - N/A   Clear
4:53 AM 50.0 °F 34.0 °F 54% 30.09 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 48.0 °F 33.1 °F 56% 30.12 in 10.0 mi East 3.5 mph - N/A   Clear
6:53 AM 46.0 °F 32.0 °F 58% 30.13 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 46.9 °F 33.1 °F 59% 30.15 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 53.6 °F 33.8 °F 47% 30.16 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 57.0 °F 35.1 °F 44% 30.15 in 10.0 mi Calm Calm - N/A   Clear
10:53 AM 62.1 °F 36.0 °F 38% 30.14 in 10.0 mi Calm Calm - N/A   Clear
11:53 AM 68.0 °F 36.0 °F 31% 30.11 in 10.0 mi West 3.5 mph - N/A   Clear
12:53 PM 73.0 °F 34.0 °F 24% 30.07 in 10.0 mi Calm Calm - N/A   Clear
1:53 PM 77.0 °F 33.1 °F 20% 30.03 in 10.0 mi NE 3.5 mph - N/A   Clear
2:53 PM 82.0 °F 34.0 °F 18% 29.99 in 10.0 mi ENE 5.8 mph - N/A   Clear
3:53 PM 82.9 °F 37.9 °F 20% 29.96 in 10.0 mi North 4.6 mph - N/A   Clear
4:53 PM 87.8 °F 32.0 °F 14% 29.97 in 10.0 mi North 4.6 mph - N/A   Clear
5:53 PM 84.9 °F 21.9 °F 10% 29.92 in 10.0 mi East 6.9 mph - N/A   Clear
6:53 PM 79.0 °F 28.9 °F 16% 29.91 in 10.0 mi NE 4.6 mph - N/A   Clear
7:53 PM 70.0 °F 30.9 °F 24% 29.93 in 10.0 mi WSW 5.8 mph - N/A   Clear
8:53 PM 68.0 °F 28.0 °F 22% 29.92 in 10.0 mi SW 5.8 mph - N/A   Clear
9:53 PM 60.1 °F 28.9 °F 31% 29.93 in 10.0 mi West 8.1 mph - N/A   Clear
10:53 PM 60.1 °F 30.0 °F 32% 29.91 in 10.0 mi Calm Calm - N/A   Clear
11:53 PM 59.0 °F 28.0 °F 31% 29.90 in 10.0 mi Calm Calm - N/A   Clear