Weather History for Helena, MT

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Wednesday, March 13, 2013

  Actual Average Record
Temperature  
Mean Temperature 49 °F 35 °F  
Max Temperature 62 °F 47 °F 69 °F (2003)
Min Temperature 36 °F 24 °F -14 °F (1969)
Degree Days  
Heating Degree Days 16 30  
Month to date heating degree days 375 412  
Since 1 July heating degree days 5494 5973  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 27 °F    
Average Humidity 44    
Maximum Humidity 64    
Minimum Humidity 23    
Precipitation  
Precipitation 0.00 in 0.02 in 0.50 in (1896)
Month to date precipitation 0.05 0.21  
Year to date precipitation 0.72 0.87  
Snow  
Snow 0.00 in 0.30 in 5.00 in (1896)
Month to date snowfall 0.1 2.7  
Since 1 July snowfall 35.8 30.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.16 in    
Wind  
Wind Speed 6 mph (WSW)    
Max Wind Speed 22 mph    
Max Gust Speed 28 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Mar. 13, 2013 Rise Set
Actual Time 7:44 AM MDT 7:31 PM MDT
Civil Twilight 7:13 AM MDT 8:01 PM MDT
Nautical Twilight 6:38 AM MDT 8:36 PM MDT
Astronomical Twilight 6:03 AM MDT 9:12 PM MDT
Moon 8:16 AM MDT (3/13) 10:03 PM MDT (3/13)
Length of Visible Light 12h 47m
Length of Day
11h 47m
Waxing Crescent, 4% of the Moon is Illuminated
Mar 13
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 44.1 °F 41.5 °F 27.0 °F 51% 30.18 in 10.0 mi SSE 4.6 mph - N/A   Clear
1:53 AM 45.0 °F 41.8 °F 28.0 °F 52% 30.16 in 10.0 mi ESE 5.8 mph - N/A   Clear
2:53 AM 42.1 °F 40.2 °F 28.0 °F 58% 30.16 in 10.0 mi Variable 3.5 mph - N/A   Clear
3:53 AM 43.0 °F - 28.0 °F 56% 30.14 in 10.0 mi Calm Calm - N/A   Clear
4:53 AM 42.1 °F 40.2 °F 28.9 °F 60% 30.14 in 10.0 mi WNW 3.5 mph - N/A   Overcast
5:53 AM 39.9 °F 36.7 °F 28.0 °F 63% 30.15 in 10.0 mi WSW 4.6 mph - N/A   Mostly Cloudy
6:53 AM 46.9 °F - 26.1 °F 44% 30.12 in 10.0 mi SSW 11.5 mph - N/A   Scattered Clouds
7:53 AM 37.0 °F 33.3 °F 27.0 °F 67% 30.15 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
8:53 AM 39.9 °F 37.8 °F 28.0 °F 63% 30.16 in 10.0 mi WSW 3.5 mph - N/A   Overcast
9:53 AM 43.0 °F 41.3 °F 28.9 °F 58% 30.17 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
10:53 AM 51.1 °F - 27.0 °F 39% 30.15 in 10.0 mi ESE 5.8 mph - N/A   Mostly Cloudy
11:53 AM 55.0 °F - 28.0 °F 35% 30.16 in 10.0 mi NW 8.1 mph - N/A   Mostly Cloudy
12:53 PM 55.9 °F - 26.1 °F 32% 30.15 in 10.0 mi Calm Calm - N/A   Overcast
1:53 PM 59.0 °F - 21.9 °F 24% 30.13 in 10.0 mi West 10.4 mph 23.0 mph N/A   Mostly Cloudy
2:53 PM 60.1 °F - 23.0 °F 24% 30.13 in 10.0 mi West 10.4 mph - N/A   Overcast
3:53 PM 62.1 °F - 24.1 °F 23% 30.12 in 10.0 mi West 13.8 mph 21.9 mph N/A   Overcast
4:53 PM 61.0 °F - 26.1 °F 26% 30.13 in 10.0 mi West 12.7 mph 21.9 mph N/A   Mostly Cloudy
5:53 PM 57.9 °F - 26.1 °F 30% 30.15 in 10.0 mi SW 10.4 mph 19.6 mph N/A   Scattered Clouds
6:53 PM 57.0 °F - 25.0 °F 29% 30.14 in 10.0 mi West 13.8 mph - N/A   Clear
7:53 PM 55.0 °F - 25.0 °F 31% 30.19 in 10.0 mi West 11.5 mph - N/A   Clear
8:53 PM 51.1 °F - 26.1 °F 38% 30.19 in 10.0 mi South 3.5 mph - N/A   Clear
9:53 PM 50.0 °F - 26.1 °F 39% 30.19 in 10.0 mi WNW 3.5 mph - N/A   Clear
10:53 PM 46.0 °F - 27.0 °F 47% 30.19 in 10.0 mi Calm Calm - N/A   Clear
11:53 PM 45.0 °F 43.5 °F 28.0 °F 52% 30.19 in 10.0 mi SSW 3.5 mph - N/A   Clear