Weather History for Helena, MT

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Friday, May 24, 2013

  Actual Average Record
Temperature  
Mean Temperature 53 °F 56 °F  
Max Temperature 65 °F 69 °F 93 °F (2001)
Min Temperature 41 °F 43 °F 29 °F (1989)
Degree Days  
Heating Degree Days 12 9  
Month to date heating degree days 251 293  
Since 1 July heating degree days 6942 7347  
Cooling Degree Days 0 0  
Month to date cooling degree days 7 0  
Year to date cooling degree days 7 0  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 32 °F    
Average Humidity 51    
Maximum Humidity 82    
Minimum Humidity 20    
Precipitation  
Precipitation 0.01 in 0.07 in 1.56 in (1953)
Month to date precipitation 1.41 1.33  
Year to date precipitation 2.95 3.56  
Snow  
Snow 0.00 in 0.00 in 2.00 in (1918)
Month to date snowfall 0.0 0.8  
Since 1 July snowfall 39.7 38.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.95 in    
Wind  
Wind Speed 9 mph (SW)    
Max Wind Speed 24 mph    
Max Gust Speed 35 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Astronomy

May. 24, 2013 Rise Set
Actual Time 5:44 AM MDT 9:06 PM MDT
Civil Twilight 5:07 AM MDT 9:43 PM MDT
Nautical Twilight 4:18 AM MDT 10:32 PM MDT
Astronomical Twilight 3:16 AM MDT 11:35 PM MDT
Moon 8:50 PM MDT (5/24) 5:22 AM MDT (5/24)
Length of Visible Light 16h 36m
Length of Day
15h 22m
Full, 100% of the Moon is Illuminated
May 24
Full
May 24
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter

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 39.5 °F 37.9 °F 82% 29.98 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
1:53 AM 43.0 °F - 37.0 °F 80% 29.97 in 10.0 mi Calm Calm - 0.01 in   Overcast
2:53 AM 42.1 °F 40.2 °F 39.0 °F 89% 29.96 in 10.0 mi West 3.5 mph - 0.00 in Rain Light Rain
3:53 AM 43.0 °F 41.3 °F 39.0 °F 86% 29.95 in 10.0 mi SE 3.5 mph - 0.00 in   Overcast
4:53 AM 43.0 °F - 37.9 °F 82% 29.96 in 10.0 mi Calm Calm - N/A   Overcast
5:53 AM 42.1 °F 40.2 °F 37.0 °F 82% 29.97 in 10.0 mi NE 3.5 mph - N/A   Mostly Cloudy
6:53 AM 42.1 °F 38.4 °F 36.0 °F 79% 29.99 in 10.0 mi WSW 5.8 mph - N/A   Scattered Clouds
7:53 AM 46.9 °F - 36.0 °F 66% 30.00 in 10.0 mi NNW 3.5 mph - N/A   Clear
8:53 AM 48.9 °F - 35.1 °F 59% 29.99 in 10.0 mi ESE 5.8 mph - N/A   Clear
9:53 AM 52.0 °F - 34.0 °F 50% 29.98 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:53 AM 54.0 °F - 33.1 °F 45% 29.95 in 10.0 mi SE 11.5 mph 19.6 mph N/A   Scattered Clouds
11:53 AM 59.0 °F - 25.0 °F 27% 29.93 in 10.0 mi WSW 17.3 mph 26.5 mph N/A   Clear
12:53 PM 59.0 °F - 23.0 °F 25% 29.92 in 10.0 mi SSW 16.1 mph 24.2 mph N/A   Partly Cloudy
1:53 PM 61.0 °F - 23.0 °F 23% 29.91 in 10.0 mi WSW 15.0 mph 24.2 mph N/A   Clear
2:53 PM 62.1 °F - 26.1 °F 25% 29.91 in 10.0 mi SW 17.3 mph 29.9 mph N/A   Scattered Clouds
3:53 PM 63.0 °F - 21.0 °F 20% 29.88 in 10.0 mi South 12.7 mph 27.6 mph N/A   Scattered Clouds
4:23 PM 62.6 °F - 24.8 °F 24% 29.86 in 10.0 mi SSW 13.8 mph 25.3 mph N/A   Mostly Cloudy
4:53 PM 62.1 °F - 25.0 °F 24% 29.88 in 10.0 mi SW 16.1 mph 32.2 mph N/A   Mostly Cloudy
5:53 PM 63.0 °F - 27.0 °F 26% 29.87 in 10.0 mi SW 9.2 mph 23.0 mph N/A   Scattered Clouds
6:53 PM 63.0 °F - 27.0 °F 26% 29.88 in 10.0 mi WSW 13.8 mph - N/A   Mostly Cloudy
7:53 PM 57.0 °F - 32.0 °F 39% 29.92 in 10.0 mi West 16.1 mph 31.1 mph N/A   Mostly Cloudy
8:53 PM 51.1 °F - 36.0 °F 56% 29.98 in 10.0 mi NNW 11.5 mph - N/A   Mostly Cloudy
9:53 PM 48.9 °F - 37.0 °F 64% 30.01 in 10.0 mi NE 5.8 mph - N/A   Overcast
10:53 PM 48.9 °F - 37.0 °F 64% 30.02 in 10.0 mi Calm Calm - N/A   Overcast
11:53 PM 48.9 °F - 34.0 °F 56% 30.00 in 10.0 mi West 10.4 mph - N/A   Overcast