Weather History for Helena, MT

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Tuesday, September 3, 2013

  Actual Average Record
Temperature  
Mean Temperature 75 °F 63 °F  
Max Temperature 90 °F 78 °F 96 °F (2001)
Min Temperature 59 °F 47 °F 32 °F (1958)
Degree Days  
Heating Degree Days 0 4  
Month to date heating degree days 0 12  
Since 1 July heating degree days 3 81  
Cooling Degree Days 10 2  
Month to date cooling degree days 20 6  
Year to date cooling degree days 529 389  
Growing Degree Days 24 (Base 50)    
Moisture  
Dew Point 45 °F    
Average Humidity 47    
Maximum Humidity 73    
Minimum Humidity 20    
Precipitation  
Precipitation T in 0.04 in 1.59 in (1901)
Month to date precipitation T 0.12  
Year to date precipitation 8.12 8.67  
Snow  
Snow 0.00 in 0.10 in T in (1954)
Month to date snowfall 0.0 0.1  
Since 1 July snowfall 0.0 0.4  
Since 1 September snowfall 0.0 0.1  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.04 in    
Wind  
Wind Speed 3 mph (WNW)    
Max Wind Speed 24 mph    
Max Gust Speed 31 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 03, 2013 Rise Set
Actual Time 6:50 AM MDT 8:02 PM MDT
Civil Twilight 6:19 AM MDT 8:33 PM MDT
Nautical Twilight 5:42 AM MDT 9:10 PM MDT
Astronomical Twilight 5:02 AM MDT 9:50 PM MDT
Moon 5:05 AM MDT (9/3) 6:52 PM MDT (9/3)
Length of Visible Light 14h 13m
Length of Day
13h 11m
Waning Crescent, 3% of the Moon is Illuminated
Sep 3
Waning Crescent
Sep 5
New
Sep 12
First Quarter
Sep 19
Full
Sep 26
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 70.0 °F 39.9 °F 33% 29.96 in 10.0 mi WSW 8.1 mph - N/A   Clear
1:53 AM 69.1 °F 39.0 °F 33% 29.97 in 10.0 mi WSW 6.9 mph - N/A   Clear
2:53 AM 63.0 °F 39.0 °F 41% 29.99 in 10.0 mi Variable 3.5 mph - N/A   Clear
3:53 AM 63.0 °F 42.1 °F 46% 30.00 in 10.0 mi Calm Calm - N/A   Clear
4:53 AM 63.0 °F 41.0 °F 45% 30.01 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 61.0 °F 42.1 °F 50% 30.02 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 60.1 °F 41.0 °F 49% 30.04 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 61.0 °F 42.1 °F 50% 30.07 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 66.9 °F 42.1 °F 40% 30.06 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 70.0 °F 45.0 °F 41% 30.07 in 10.0 mi NNE 3.5 mph - N/A   Clear
10:53 AM 70.0 °F 45.0 °F 41% 30.07 in 10.0 mi WNW 4.6 mph - N/A   Clear
11:53 AM 75.0 °F 42.1 °F 31% 30.06 in 10.0 mi Calm Calm - N/A   Clear
12:53 PM 80.1 °F 42.1 °F 26% 30.04 in 10.0 mi Calm Calm - N/A   Partly Cloudy
1:53 PM 82.0 °F 43.0 °F 25% 30.02 in 10.0 mi Calm Calm - N/A   Clear
2:53 PM 86.0 °F 43.0 °F 22% 30.00 in 10.0 mi NNE 3.5 mph - N/A   Clear
3:53 PM 84.9 °F 42.1 °F 22% 29.99 in 10.0 mi Variable 3.5 mph - N/A   Scattered Clouds
4:53 PM 88.0 °F 41.0 °F 19% 29.96 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:53 PM 84.9 °F 43.0 °F 23% 29.98 in 10.0 mi NNE 3.5 mph - N/A   Scattered Clouds
6:53 PM 80.1 °F 48.0 °F 32% 30.00 in 10.0 mi West 9.2 mph - N/A   Scattered Clouds
7:53 PM 75.0 °F 51.1 °F 43% 30.04 in 10.0 mi West 15.0 mph 28.8 mph N/A   Scattered Clouds
8:53 PM 73.0 °F 52.0 °F 48% 30.09 in 10.0 mi WSW 15.0 mph 21.9 mph N/A   Overcast
9:53 PM 73.9 °F 52.0 °F 46% 30.12 in 10.0 mi Calm Calm - N/A   Overcast
10:53 PM 68.0 °F 57.0 °F 68% 30.13 in 10.0 mi NW 3.5 mph - 0.00 in   Overcast
11:53 PM 66.9 °F 57.0 °F 70% 30.12 in 10.0 mi Calm Calm - N/A   Mostly Cloudy