Weather History for Helena, MT

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Thursday, March 14, 2013

  Actual Average Record
Temperature  
Mean Temperature 47 °F 36 °F  
Max Temperature 62 °F 48 °F 67 °F (1999)
Min Temperature 31 °F 24 °F -13 °F (1906)
Degree Days  
Heating Degree Days 18 29  
Month to date heating degree days 393 441  
Since 1 July heating degree days 5512 6002  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 28 °F    
Average Humidity 55    
Maximum Humidity 82    
Minimum Humidity 27    
Precipitation  
Precipitation 0.00 in 0.02 in 0.36 in (1927)
Month to date precipitation 0.05 0.23  
Year to date precipitation 0.72 0.89  
Snow  
Snow 0.00 in 0.20 in 6.10 in (1930)
Month to date snowfall 0.1 2.9  
Since 1 July snowfall 35.8 30.2  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.13 in    
Wind  
Wind Speed 3 mph (West)    
Max Wind Speed 12 mph    
Max Gust Speed 18 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Mar. 14, 2013 Rise Set
Actual Time 7:42 AM MDT 7:32 PM MDT
Civil Twilight 7:12 AM MDT 8:02 PM MDT
Nautical Twilight 6:36 AM MDT 8:38 PM MDT
Astronomical Twilight 6:01 AM MDT 9:14 PM MDT
Moon 8:45 AM MDT (3/14) 11:07 PM MDT (3/14)
Length of Visible Light 12h 50m
Length of Day
11h 50m
Waxing Crescent, 9% of the Moon is Illuminated
Mar 14
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 39.0 °F - 27.0 °F 62% 30.19 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 39.9 °F 37.8 °F 27.0 °F 60% 30.20 in 10.0 mi WNW 3.5 mph - N/A   Clear
2:53 AM 39.0 °F 35.7 °F 28.0 °F 65% 30.19 in 10.0 mi West 4.6 mph - N/A   Overcast
3:53 AM 39.0 °F 35.7 °F 28.0 °F 65% 30.18 in 10.0 mi WSW 4.6 mph - N/A   Clear
4:53 AM 36.0 °F 32.1 °F 27.0 °F 70% 30.18 in 10.0 mi WSW 4.6 mph - N/A   Clear
5:53 AM 36.0 °F 33.3 °F 27.0 °F 70% 30.20 in 10.0 mi SSW 3.5 mph - N/A   Clear
6:53 AM 34.0 °F - 26.1 °F 73% 30.22 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:53 AM 32.0 °F 26.4 °F 26.1 °F 79% 30.24 in 10.0 mi West 5.8 mph - N/A   Clear
8:53 AM 34.0 °F 31.0 °F 28.0 °F 79% 30.25 in 10.0 mi WSW 3.5 mph - N/A   Clear
9:53 AM 37.9 °F - 28.9 °F 70% 30.25 in 10.0 mi Calm Calm - N/A   Clear
10:53 AM 43.0 °F 40.3 °F 28.0 °F 56% 30.24 in 10.0 mi West 4.6 mph - N/A   Clear
11:53 AM 46.0 °F 44.8 °F 28.9 °F 51% 30.21 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
12:53 PM 50.0 °F - 28.9 °F 44% 30.19 in 10.0 mi Calm Calm - N/A   Clear
1:53 PM 54.0 °F - 28.9 °F 38% 30.15 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:53 PM 61.0 °F - 28.9 °F 30% 30.09 in 10.0 mi Calm Calm - N/A   Scattered Clouds
3:53 PM 61.0 °F - 27.0 °F 27% 30.08 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:53 PM 61.0 °F - 26.1 °F 26% 30.06 in 10.0 mi ESE 4.6 mph - N/A   Clear
5:53 PM 61.0 °F - 28.0 °F 29% 30.04 in 10.0 mi Calm Calm - N/A   Clear
6:53 PM 57.9 °F - 28.9 °F 33% 30.03 in 10.0 mi Calm Calm - N/A   Clear
7:53 PM 54.0 °F - 28.9 °F 38% 30.03 in 10.0 mi SW 8.1 mph - N/A   Clear
8:53 PM 46.0 °F 43.9 °F 28.0 °F 50% 30.04 in 10.0 mi NNE 4.6 mph - N/A   Clear
9:53 PM 46.9 °F - 28.9 °F 50% 30.00 in 10.0 mi WNW 4.6 mph - N/A   Clear
10:53 PM 44.1 °F 42.5 °F 27.0 °F 51% 29.99 in 10.0 mi Variable 3.5 mph - N/A   Clear
11:53 PM 44.1 °F 41.5 °F 27.0 °F 51% 30.00 in 10.0 mi NNW 4.6 mph - N/A   Clear