Weather History for Helena, MT

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Saturday, March 16, 2013

  Actual Average Record
Temperature  
Mean Temperature 46 °F 36 °F  
Max Temperature 55 °F 48 °F 70 °F (1994)
Min Temperature 36 °F 24 °F -10 °F (1906)
Degree Days  
Heating Degree Days 19 29  
Month to date heating degree days 431 499  
Since 1 July heating degree days 5550 6060  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 23 °F    
Average Humidity 42    
Maximum Humidity 60    
Minimum Humidity 24    
Precipitation  
Precipitation 0.00 in 0.02 in 0.37 in (1922)
Month to date precipitation 0.05 0.26  
Year to date precipitation 0.72 0.92  
Snow  
Snow 0.00 in 0.20 in 4.20 in (1903)
Month to date snowfall 0.1 3.3  
Since 1 July snowfall 35.8 30.6  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.89 in    
Wind  
Wind Speed 8 mph (WSW)    
Max Wind Speed 18 mph    
Max Gust Speed 23 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Mar. 16, 2013 Rise Set
Actual Time 7:38 AM MDT 7:35 PM MDT
Civil Twilight 7:08 AM MDT 8:05 PM MDT
Nautical Twilight 6:32 AM MDT 8:40 PM MDT
Astronomical Twilight 5:56 AM MDT 9:17 PM MDT
Moon 9:52 AM MDT (3/16) 12:09 AM MDT (3/16)
Length of Visible Light 12h 57m
Length of Day
11h 57m
Waxing Crescent, 23% of the Moon is Illuminated
Mar 16
Waxing Crescent
Mar 19
First Quarter
Mar 27
Full
Apr 2
Last Quarter
Apr 10
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 43.0 °F 38.2 °F 26.1 °F 51% 30.06 in 10.0 mi SW 8.1 mph - N/A   Clear
1:53 AM 41.0 °F 36.4 °F 25.0 °F 53% 30.05 in 10.0 mi SW 6.9 mph - N/A   Scattered Clouds
2:53 AM 37.0 °F 34.5 °F 25.0 °F 62% 30.06 in 10.0 mi West 3.5 mph - N/A   Partly Cloudy
3:53 AM 39.0 °F 32.8 °F 26.1 °F 60% 30.02 in 10.0 mi WSW 9.2 mph - N/A   Clear
4:53 AM 43.0 °F 36.8 °F 25.0 °F 49% 30.00 in 10.0 mi WSW 11.5 mph - N/A   Scattered Clouds
5:53 AM 42.1 °F 35.7 °F 26.1 °F 53% 30.00 in 10.0 mi West 11.5 mph 18.4 mph N/A   Scattered Clouds
6:53 AM 39.9 °F 37.8 °F 26.1 °F 58% 30.00 in 10.0 mi WSW 3.5 mph - N/A   Overcast
7:53 AM 39.0 °F 36.8 °F 26.1 °F 60% 30.00 in 10.0 mi SSW 3.5 mph - N/A   Mostly Cloudy
8:53 AM 39.9 °F 37.8 °F 26.1 °F 58% 29.99 in 10.0 mi South 3.5 mph - N/A   Partly Cloudy
9:53 AM 41.0 °F - 28.0 °F 60% 30.00 in 10.0 mi Calm Calm - N/A   Scattered Clouds
10:53 AM 46.0 °F 43.9 °F 27.0 °F 47% 29.99 in 10.0 mi ENE 4.6 mph - N/A   Partly Cloudy
11:53 AM 48.0 °F - 24.1 °F 39% 29.96 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
12:53 PM 51.1 °F - 19.9 °F 29% 29.93 in 10.0 mi West 6.9 mph 20.7 mph N/A   Overcast
1:53 PM 53.1 °F - 19.9 °F 27% 29.88 in 10.0 mi WNW 12.7 mph - N/A   Mostly Cloudy
2:53 PM 52.0 °F - 18.0 °F 26% 29.86 in 10.0 mi SSW 12.7 mph 19.6 mph N/A   Mostly Cloudy
3:53 PM 52.0 °F - 19.0 °F 27% 29.81 in 10.0 mi West 11.5 mph - N/A   Overcast
4:53 PM 52.0 °F - 18.0 °F 26% 29.78 in 10.0 mi West 17.3 mph - N/A   Partly Cloudy
5:53 PM 53.1 °F - 18.0 °F 25% 29.76 in 10.0 mi WNW 10.4 mph - N/A   Clear
6:53 PM 48.9 °F - 19.0 °F 31% 29.75 in 10.0 mi West 8.1 mph - N/A   Clear
7:53 PM 45.0 °F 41.2 °F 19.9 °F 37% 29.75 in 10.0 mi West 6.9 mph - N/A   Clear
8:53 PM 44.1 °F 40.8 °F 19.9 °F 38% 29.73 in 10.0 mi WSW 5.8 mph - N/A   Clear
9:53 PM 43.0 °F 38.8 °F 21.0 °F 42% 29.70 in 10.0 mi WSW 6.9 mph - N/A   Clear
10:53 PM 37.9 °F 34.4 °F 23.0 °F 55% 29.68 in 10.0 mi NNW 4.6 mph - N/A   Clear
11:53 PM 37.0 °F 30.4 °F 24.1 °F 59% 29.67 in 10.0 mi NW 9.2 mph - N/A   Scattered Clouds