Weather History for Helena, MT

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Friday, March 21, 2014

  Actual Average Record
Temperature  
Mean Temperature 25 °F 38 °F  
Max Temperature 32 °F 50 °F 73 °F (1928)
Min Temperature 18 °F 26 °F -11 °F (1913)
Degree Days  
Heating Degree Days 40 27  
Month to date heating degree days 636 637  
Since 1 July heating degree days 6152 6198  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 13 °F    
Average Humidity 61    
Maximum Humidity 74    
Minimum Humidity 47    
Precipitation  
Precipitation T in 0.02 in 0.33 in (1964)
Month to date precipitation 0.64 0.36  
Year to date precipitation 3.17 1.02  
Snow  
Snow T in 0.20 in 4.50 in (1964)
Month to date snowfall 3.6 4.3  
Since 1 July snowfall 41.6 31.6  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.38 in    
Wind  
Wind Speed 10 mph (NNW)    
Max Wind Speed 18 mph    
Max Gust Speed 23 mph    
Visibility 9 miles    
Events Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Mar. 21, 2014 Rise Set
Actual Time 7:28 AM MDT 7:42 PM MDT
Civil Twilight 6:58 AM MDT 8:12 PM MDT
Nautical Twilight 6:23 AM MDT 8:47 PM MDT
Astronomical Twilight 5:46 AM MDT 9:24 PM MDT
Moon 12:20 AM MDT (3/21) 10:07 AM MDT (3/21)
Length of Visible Light 13h 13m
Length of Day
12h 13m
Waning Gibbous, 75% of the Moon is Illuminated
Mar 21
Waning Gibbous
Mar 23
Last Quarter
Mar 30
New
Apr 7
First Quarter
Apr 15
Full

Hourly Weather History & Observations

Time (MDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:28 AM 28.4 °F 19.7 °F 21.2 °F 74% 30.16 in 10.0 mi NW 9.2 mph - 0.00 in   Overcast
12:53 AM 27.0 °F 18.7 °F 21.0 °F 78% 30.31 in 10.0 mi NNW 8.1 mph - 0.00 in   Overcast
1:53 AM 25.0 °F 19.3 °F 19.9 °F 81% 30.34 in 3.0 mi NNW 4.6 mph - 0.00 in Snow Light Snow
2:13 AM 26.6 °F 20.0 °F 17.6 °F 69% 30.20 in 6.0 mi North 5.8 mph - 0.00 in Snow Light Snow
2:53 AM 25.0 °F 18.1 °F 18.0 °F 75% 30.36 in 4.0 mi NNE 5.8 mph - 0.00 in Snow Light Snow
3:00 AM 24.8 °F 16.9 °F 17.6 °F 74% 30.21 in 7.0 mi NNW 6.9 mph - 0.00 in Snow Light Snow
3:53 AM 24.1 °F 12.0 °F 15.1 °F 69% 30.37 in 10.0 mi NNW 13.8 mph - 0.00 in   Overcast
4:53 AM 23.0 °F 12.4 °F 14.0 °F 68% 30.38 in 10.0 mi NNW 10.4 mph - 0.00 in   Overcast
5:29 AM 23.0 °F 13.1 °F 12.2 °F 63% 30.24 in 10.0 mi North 9.2 mph - N/A   Overcast
5:53 AM 21.9 °F 13.4 °F 12.9 °F 68% 30.40 in 10.0 mi North 6.9 mph - N/A   Overcast
6:53 AM 21.0 °F 9.9 °F 12.9 °F 71% 30.42 in 10.0 mi NW 10.4 mph - N/A   Overcast
7:53 AM 19.9 °F 10.1 °F 10.9 °F 68% 30.44 in 10.0 mi NNW 8.1 mph - N/A   Mostly Cloudy
8:53 AM 21.0 °F 10.6 °F 10.9 °F 65% 30.45 in 10.0 mi NW 9.2 mph - N/A   Mostly Cloudy
9:53 AM 21.0 °F 12.4 °F 10.9 °F 65% 30.45 in 10.0 mi NNW 6.9 mph - N/A   Mostly Cloudy
10:53 AM 24.1 °F 14.4 °F 10.9 °F 57% 30.45 in 10.0 mi North 9.2 mph - N/A   Overcast
11:01 AM 24.8 °F 16.1 °F 10.4 °F 54% 30.27 in 10.0 mi North 8.1 mph - N/A   Overcast
11:08 AM 24.8 °F 16.9 °F 10.4 °F 54% 30.27 in 10.0 mi North 6.9 mph - N/A   Mostly Cloudy
11:53 AM 25.0 °F 17.1 °F 10.0 °F 53% 30.44 in 10.0 mi NW 6.9 mph - N/A   Mostly Cloudy
12:53 PM 27.0 °F 16.7 °F 10.0 °F 49% 30.43 in 10.0 mi NNW 11.5 mph - N/A   Scattered Clouds
1:53 PM 28.9 °F 25.2 °F 12.0 °F 49% 30.41 in 10.0 mi Variable 3.5 mph - N/A   Clear
2:53 PM 30.9 °F 25.2 °F 12.9 °F 47% 30.38 in 10.0 mi Variable 5.8 mph 16.1 mph N/A   Clear
3:53 PM 30.9 °F 21.7 °F 12.9 °F 47% 30.38 in 10.0 mi North 11.5 mph 20.7 mph N/A   Partly Cloudy
4:53 PM 28.9 °F 16.9 °F 12.0 °F 49% 30.38 in 10.0 mi North 17.3 mph - N/A   Clear
5:53 PM 26.1 °F 13.6 °F 12.0 °F 55% 30.41 in 10.0 mi NNW 16.1 mph - N/A   Partly Cloudy
6:53 PM 23.0 °F 10.6 °F 10.9 °F 60% 30.44 in 10.0 mi NNW 13.8 mph - N/A   Mostly Cloudy
7:53 PM 21.0 °F 10.6 °F 10.0 °F 63% 30.46 in 10.0 mi NW 9.2 mph - N/A   Overcast
8:53 PM 21.0 °F 9.9 °F 10.9 °F 65% 30.48 in 10.0 mi NW 10.4 mph - N/A   Scattered Clouds
9:53 PM 19.9 °F 9.3 °F 10.0 °F 65% 30.48 in 10.0 mi NW 9.2 mph - N/A   Overcast
10:53 PM 19.9 °F 7.9 °F 10.0 °F 65% 30.49 in 10.0 mi NW 11.5 mph - N/A   Overcast
11:16 PM 19.4 °F 8.6 °F 10.4 °F 68% 30.29 in 10.0 mi NW 9.2 mph - N/A   Overcast
11:53 PM 19.0 °F 8.2 °F 10.0 °F 68% 30.50 in 9.0 mi NW 9.2 mph - N/A   Overcast