Helena, MT

11:30 AM MDT on September 20, 2017 (GMT -0600)
Helena Regional

Weather History for KHLN - May, 2012

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Friday, May 18, 2012

  Actual Average Record
Temperature  
Mean Temperature 53 °F 55 °F  
Max Temperature 65 °F 68 °F 91 °F (2006)
Min Temperature 40 °F 42 °F 26 °F (1903)
Degree Days  
Heating Degree Days 12 11  
Month to date heating degree days 221 235  
Since 1 July heating degree days 6565 7289  
Cooling Degree Days 0 0  
Month to date cooling degree days 4 0  
Year to date cooling degree days 4 0  
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 27 °F    
Average Humidity 36    
Maximum Humidity 58    
Minimum Humidity 13    
Precipitation  
Precipitation 0.00 in 0.06 in 1.10 in (1944)
Month to date precipitation 0.13 0.92  
Year to date precipitation 3.44 3.15  
Snow  
Snow 0.00 in 0.00 in 4.60 in (1903)
Month to date snowfall 0.0 0.7  
Since 1 July snowfall 40.1 37.9  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.87 in    
Wind  
Wind Speed 11 mph (West)    
Max Wind Speed 28 mph    
Max Gust Speed 44 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

May. 18, 2012 Rise Set
Actual Time 5:49 AM MDT 8:59 PM MDT
Civil Twilight 5:13 AM MDT 9:36 PM MDT
Nautical Twilight 4:26 AM MDT 10:23 PM MDT
Astronomical Twilight 3:28 AM MDT 11:21 PM MDT
Moon 4:27 AM MDT (5/18) 7:07 PM MDT (5/18)
Length of Visible Light 16h 22m
Length of Day
15h 09m
Waning Crescent, 4% of the Moon is Illuminated
May 18
Waning Crescent
May 20
New
May 28
First Quarter
Jun 4
Full
Jun 11
Last 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 53.1 °F - 35.1 °F 50% 29.76 in 10.0 mi West 10.4 mph - N/A   Overcast
1:53 AM 53.1 °F - 36.0 °F 52% 29.76 in 10.0 mi West 11.5 mph - N/A   Overcast
2:53 AM 53.1 °F - 37.0 °F 55% 29.77 in 10.0 mi Calm Calm - N/A   Overcast
3:53 AM 53.1 °F - 36.0 °F 52% 29.78 in 10.0 mi West 6.9 mph - N/A   Overcast
4:53 AM 51.1 °F - 36.0 °F 56% 29.80 in 10.0 mi West 9.2 mph - N/A   Overcast
5:53 AM 52.0 °F - 34.0 °F 50% 29.81 in 10.0 mi West 9.2 mph - N/A   Overcast
6:53 AM 51.1 °F - 32.0 °F 48% 29.83 in 10.0 mi West 12.7 mph 21.9 mph N/A   Scattered Clouds
7:53 AM 52.0 °F - 30.9 °F 45% 29.85 in 10.0 mi West 15.0 mph - N/A   Scattered Clouds
8:53 AM 54.0 °F - 28.9 °F 38% 29.85 in 10.0 mi West 19.6 mph - N/A   Scattered Clouds
9:53 AM 57.0 °F - 27.0 °F 32% 29.85 in 10.0 mi West 13.8 mph - N/A   Scattered Clouds
10:53 AM 59.0 °F - 24.1 °F 26% 29.85 in 10.0 mi WNW 11.5 mph 21.9 mph N/A   Clear
11:53 AM 60.1 °F - 24.1 °F 25% 29.84 in 10.0 mi West 9.2 mph 19.6 mph N/A   Partly Cloudy
12:53 PM 62.1 °F - 21.9 °F 21% 29.84 in 10.0 mi SW 12.7 mph 19.6 mph N/A   Mostly Cloudy
1:53 PM 63.0 °F - 19.9 °F 19% 29.84 in 10.0 mi NW 12.7 mph 20.7 mph N/A   Overcast
2:53 PM 63.0 °F - 18.0 °F 18% 29.85 in 10.0 mi WNW 10.4 mph 20.7 mph N/A   Scattered Clouds
3:53 PM 64.0 °F - 16.0 °F 16% 29.85 in 10.0 mi West 18.4 mph 26.5 mph N/A   Clear
4:53 PM 64.0 °F - 12.0 °F 13% 29.86 in 10.0 mi West 20.7 mph 28.8 mph N/A   Clear
5:53 PM 61.0 °F - 12.9 °F 15% 29.89 in 10.0 mi WNW 17.3 mph - N/A   Partly Cloudy
6:53 PM 60.1 °F - 30.0 °F 32% 29.91 in 10.0 mi North 12.7 mph - N/A   Mostly Cloudy
7:53 PM 57.0 °F - 30.9 °F 37% 29.94 in 10.0 mi North 9.2 mph - N/A   Partly Cloudy
8:53 PM 51.1 °F - 32.0 °F 48% 29.98 in 10.0 mi NW 3.5 mph - N/A   Clear
9:53 PM 50.0 °F - 30.9 °F 48% 30.01 in 10.0 mi WSW 4.6 mph - N/A   Clear
10:53 PM 45.0 °F 41.8 °F 30.0 °F 56% 30.03 in 10.0 mi WSW 5.8 mph - N/A   Clear
11:53 PM 44.1 °F 40.1 °F 30.0 °F 58% 30.03 in 10.0 mi WSW 6.9 mph - N/A   Clear