Helena, MT

12:08 AM MDT on May 29, 2017 (GMT -0600)
Helena Regional

Weather History for KHLN - April, 2012

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Friday, April 20, 2012

  Actual Average Record
Temperature  
Mean Temperature 57 °F 46 °F  
Max Temperature 70 °F 59 °F 85 °F (1980)
Min Temperature 44 °F 33 °F 3 °F (1927)
Degree Days  
Heating Degree Days 8 19  
Month to date heating degree days 404 429  
Since 1 July heating degree days 6259 6881  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Growing Degree Days 7 (Base 50)    
Moisture  
Dew Point 31 °F    
Average Humidity 42    
Maximum Humidity 59    
Minimum Humidity 24    
Precipitation  
Precipitation 0.00 in 0.03 in 0.54 in (1988)
Month to date precipitation 0.50 0.61  
Year to date precipitation 3.22 1.86  
Snow  
Snow 0.00 in 0.10 in 2.20 in (1932)
Month to date snowfall T 2.7  
Since 1 July snowfall 40.1 36.2  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.02 in    
Wind  
Wind Speed 10 mph (West)    
Max Wind Speed 31 mph    
Max Gust Speed 39 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

Apr. 20, 2012 Rise Set
Actual Time 6:30 AM MDT 8:23 PM MDT
Civil Twilight 5:58 AM MDT 8:55 PM MDT
Nautical Twilight 5:18 AM MDT 9:35 PM MDT
Astronomical Twilight 4:35 AM MDT 10:19 PM MDT
Moon 5:56 AM MDT (4/20) 8:13 PM MDT (4/20)
Length of Visible Light 14h 57m
Length of Day
13h 52m
Waning Crescent, 0% of the Moon is Illuminated
Apr 20
Waning Crescent
Apr 21
New
Apr 29
First Quarter
May 5
Full
May 12
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 50.0 °F - 23.0 °F 35% 30.09 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:53 AM 48.9 °F - 25.0 °F 39% 30.07 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:53 AM 46.4 °F - 26.6 °F 46% 30.03 in 10.0 mi Calm Calm - N/A   Overcast
3:53 AM 48.0 °F - 24.1 °F 39% 30.04 in 10.0 mi SE 6.9 mph - N/A   Overcast
4:53 AM 45.0 °F 43.5 °F 28.9 °F 53% 30.04 in 10.0 mi NW 3.5 mph - N/A   Overcast
5:53 AM 45.0 °F 43.5 °F 28.0 °F 52% 30.03 in 10.0 mi WNW 3.5 mph - N/A   Overcast
6:53 AM 45.0 °F 42.6 °F 28.9 °F 53% 30.02 in 10.0 mi SSW 4.6 mph - N/A   Overcast
7:53 AM 46.0 °F - 30.9 °F 56% 30.04 in 10.0 mi Calm Calm - N/A   Overcast
8:53 AM 46.9 °F - 30.0 °F 52% 30.04 in 10.0 mi SSE 4.6 mph - N/A   Mostly Cloudy
9:53 AM 54.0 °F - 33.1 °F 45% 30.01 in 10.0 mi ESE 6.9 mph - N/A   Overcast
10:53 AM 59.0 °F - 35.1 °F 41% 29.99 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:23 AM 62.6 °F - 33.8 °F 34% 29.95 in 10.0 mi West 23.0 mph 33.4 mph N/A   Mostly Cloudy
11:53 AM 66.0 °F - 34.0 °F 30% 29.96 in 10.0 mi West 21.9 mph 32.2 mph N/A   Scattered Clouds
12:53 PM 66.9 °F - 32.0 °F 27% 29.95 in 10.0 mi WNW 23.0 mph 34.5 mph N/A   Scattered Clouds
1:53 PM 66.9 °F - 30.9 °F 26% 29.94 in 10.0 mi West 21.9 mph 35.7 mph N/A   Clear
2:53 PM 68.0 °F - 30.9 °F 25% 29.93 in 10.0 mi West 20.7 mph 31.1 mph N/A   Clear
3:53 PM 68.0 °F - 33.1 °F 27% 29.94 in 10.0 mi West 15.0 mph 28.8 mph N/A   Partly Cloudy
4:53 PM 66.9 °F - 30.9 °F 26% 29.95 in 10.0 mi West 26.5 mph 34.5 mph N/A   Clear
5:53 PM 64.9 °F - 32.0 °F 29% 29.97 in 10.0 mi WNW 17.3 mph 32.2 mph N/A   Clear
6:53 PM 62.1 °F - 32.0 °F 32% 30.00 in 10.0 mi WNW 21.9 mph 32.2 mph N/A   Partly Cloudy
7:53 PM 57.0 °F - 34.0 °F 42% 30.03 in 10.0 mi WNW 15.0 mph 21.9 mph N/A   Partly Cloudy
8:53 PM 54.0 °F - 35.1 °F 49% 30.07 in 10.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
9:53 PM 53.1 °F - 36.0 °F 52% 30.09 in 10.0 mi West 15.0 mph - N/A   Mostly Cloudy
10:53 PM 52.0 °F - 37.0 °F 57% 30.11 in 10.0 mi NW 8.1 mph - N/A   Overcast
11:53 PM 51.1 °F - 37.0 °F 59% 30.10 in 10.0 mi Calm Calm - N/A   Overcast