Weather History for Helena, MT

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Thursday, March 22, 2012

  Actual Average Record
Temperature  
Mean Temperature 53 °F 38 °F  
Max Temperature 67 °F 50 °F 69 °F (1993)
Min Temperature 39 °F 26 °F -16 °F (1898)
Degree Days  
Heating Degree Days 12 27  
Month to date heating degree days 548 664  
Since 1 July heating degree days 5668 6225  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 29 °F    
Average Humidity 42    
Maximum Humidity 64    
Minimum Humidity 19    
Precipitation  
Precipitation 0.00 in 0.02 in 0.70 in (1920)
Month to date precipitation 0.67 0.38  
Year to date precipitation 2.50 1.04  
Snow  
Snow 0.00 in 0.10 in 3.00 in (1901)
Month to date snowfall 1.4 4.4  
Since 1 July snowfall 40.1 31.7  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.80 in    
Wind  
Wind Speed 10 mph (SW)    
Max Wind Speed 24 mph    
Max Gust Speed 40 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Mar. 22, 2012 Rise Set
Actual Time 7:25 AM MDT 7:44 PM MDT
Civil Twilight 6:55 AM MDT 8:14 PM MDT
Nautical Twilight 6:20 AM MDT 8:50 PM MDT
Astronomical Twilight 5:43 AM MDT 9:26 PM MDT
Moon 7:03 AM MDT (3/22) 8:17 PM MDT (3/22)
Length of Visible Light 13h 18m
Length of Day
12h 18m
New Moon, 0% of the Moon is Illuminated
Mar 22
New Moon
Mar 30
First Quarter
Apr 6
Full
Apr 13
Last Quarter
Apr 21
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 48.0 °F - 30.9 °F 52% 29.86 in 10.0 mi Variable 5.8 mph - N/A   Clear
1:53 AM 45.0 °F 40.6 °F 30.9 °F 58% 29.85 in 10.0 mi ENE 8.1 mph - N/A   Clear
2:53 AM 44.1 °F - 30.9 °F 60% 29.85 in 10.0 mi Calm Calm - N/A   Clear
3:53 AM 46.9 °F - 30.0 °F 52% 29.80 in 10.0 mi East 8.1 mph - N/A   Clear
4:53 AM 48.9 °F - 28.9 °F 46% 29.80 in 10.0 mi ESE 3.5 mph - N/A   Clear
5:53 AM 44.1 °F - 28.9 °F 55% 29.81 in 10.0 mi Calm Calm - N/A   Clear
6:53 AM 48.9 °F - 28.9 °F 46% 29.79 in 10.0 mi Variable 6.9 mph - N/A   Clear
7:17 AM 53.6 °F - 28.4 °F 38% 29.76 in 10.0 mi South 12.7 mph 21.9 mph N/A   Clear
7:53 AM 53.1 °F - 28.0 °F 38% 29.77 in 10.0 mi South 16.1 mph 25.3 mph N/A   Clear
8:53 AM 46.0 °F - 30.9 °F 56% 29.79 in 10.0 mi Calm Calm - N/A   Clear
9:53 AM 55.0 °F - 28.0 °F 35% 29.75 in 10.0 mi SSE 13.8 mph 21.9 mph N/A   Clear
10:53 AM 60.1 °F - 27.0 °F 28% 29.73 in 10.0 mi South 18.4 mph 27.6 mph N/A   Clear
11:53 AM 62.1 °F - 27.0 °F 26% 29.72 in 10.0 mi South 19.6 mph 28.8 mph N/A   Partly Cloudy
12:53 PM 66.0 °F - 25.0 °F 21% 29.72 in 10.0 mi SSW 15.0 mph 19.6 mph N/A   Scattered Clouds
1:53 PM 64.9 °F - 21.9 °F 19% 29.73 in 10.0 mi SSW 13.8 mph 35.7 mph N/A   Scattered Clouds
2:53 PM 64.9 °F - 26.1 °F 23% 29.72 in 10.0 mi West 15.0 mph 23.0 mph N/A   Partly Cloudy
3:53 PM 63.0 °F - 30.0 °F 29% 29.74 in 10.0 mi NW 18.4 mph 25.3 mph N/A   Clear
4:53 PM 61.0 °F - 33.1 °F 35% 29.75 in 10.0 mi WNW 18.4 mph 24.2 mph N/A   Clear
5:53 PM 57.9 °F - 32.0 °F 37% 29.79 in 10.0 mi WNW 10.4 mph - N/A   Clear
6:53 PM 55.0 °F - 30.9 °F 40% 29.82 in 10.0 mi WNW 10.4 mph - N/A   Clear
7:53 PM 48.9 °F - 28.9 °F 46% 29.86 in 10.0 mi WNW 9.2 mph - N/A   Clear
8:53 PM 46.0 °F 41.0 °F 28.9 °F 51% 29.89 in 10.0 mi West 10.4 mph - N/A   Clear
9:53 PM 43.0 °F 39.5 °F 28.9 °F 58% 29.89 in 10.0 mi West 5.8 mph - N/A   Clear
10:53 PM 41.0 °F - 28.0 °F 60% 29.88 in 10.0 mi Calm Calm - N/A   Clear
11:53 PM 39.9 °F 37.8 °F 28.9 °F 65% 29.88 in 10.0 mi SSW 3.5 mph - N/A   Clear