Weather History for Lewistown, MT

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Wednesday, May 13, 2009

  Actual Average Record
Temperature  
Mean Temperature 40 °F 49 °F  
Max Temperature 50 °F 62 °F 88 °F (1903)
Min Temperature 30 °F 37 °F 15 °F (1953)
Degree Days  
Heating Degree Days 25 16  
Month to date heating degree days 267 229  
Since 1 July heating degree days 7909 7736  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 29 °F    
Average Humidity 71    
Maximum Humidity 100    
Minimum Humidity 42    
Precipitation  
Precipitation 0.10 in 0.08 in 1.20 in (1974)
Month to date precipitation 0.97 0.97  
Year to date precipitation 3.93 4.38  
Snow  
Snow 0.00 in - - ()
Snow Depth 3.00 in    
Sea Level Pressure  
Sea Level Pressure 29.93 in    
Wind  
Wind Speed 14 mph (WNW)    
Max Wind Speed 31 mph    
Max Gust Speed 47 mph    
Visibility 6 miles    
Events Fog , Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

May. 13, 2009 Rise Set
Actual Time 5:44 AM MDT 8:44 PM MDT
Civil Twilight 5:08 AM MDT 9:20 PM MDT
Nautical Twilight 4:22 AM MDT 10:07 PM MDT
Astronomical Twilight 3:27 AM MDT 11:03 PM MDT
Moon 12:33 AM MDT (5/13) 8:49 AM MDT (5/13)
Length of Visible Light 16h 12m
Length of Day
15h 00m
Waning Gibbous, 81% of the Moon is Illuminated
May 13
Waning Gibbous
May 17
Last Quarter
May 24
New
May 30
First Quarter
Jun 7
Full

Hourly Weather History & Observations

Time (MDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 35.1 °F 26.4 °F 21.0 °F 57% 29.78 in 10.0 mi WSW 12.7 mph - N/A   Overcast
1:54 AM 36.0 °F 25.6 °F 21.9 °F 57% 29.78 in 10.0 mi West 18.4 mph 26.5 mph N/A   Overcast
2:54 AM 34.0 °F 22.1 °F 27.0 °F 75% 29.79 in 10.0 mi WNW 21.9 mph 33.4 mph 0.00 in   Overcast
3:23 AM 33.8 °F 21.6 °F 28.4 °F 81% 29.78 in 7.0 mi West 23.0 mph 33.4 mph 0.00 in Snow Light Snow
3:34 AM 32.0 °F 20.5 °F 28.4 °F 87% 29.78 in 2.5 mi WNW 18.4 mph 35.7 mph 0.00 in Snow Light Snow
3:41 AM 32.0 °F 19.5 °F 30.2 °F 93% 29.78 in 1.8 mi West 21.9 mph 32.2 mph 0.00 in Snow Light Snow
3:54 AM 32.0 °F 18.9 °F 30.0 °F 92% 29.82 in 0.8 mi West 24.2 mph 33.4 mph 0.00 in Snow Light Snow
4:11 AM 30.2 °F 17.8 °F 30.2 °F 100% 29.79 in 1.2 mi West 19.6 mph 28.8 mph 0.01 in Snow Light Snow
4:36 AM 30.2 °F 17.8 °F 30.2 °F 100% 29.79 in 1.0 mi WNW 19.6 mph 27.6 mph 0.01 in Snow Light Snow
4:44 AM 30.2 °F 18.5 °F 30.2 °F 100% 29.79 in 0.5 mi NW 17.3 mph 27.6 mph 0.02 in Fog , Snow Snow
4:54 AM 30.0 °F 17.9 °F 30.0 °F 100% 29.83 in 0.5 mi NW 18.4 mph 24.2 mph 0.04 in Fog , Snow Snow
5:51 AM 30.2 °F 18.9 °F 30.2 °F 100% 29.81 in 1.0 mi WNW 16.1 mph 24.2 mph 0.03 in Snow Light Snow
5:54 AM 30.9 °F 19.4 °F 30.0 °F 96% 29.85 in 1.0 mi WNW 17.3 mph 24.2 mph 0.03 in Snow Light Snow
6:08 AM 30.2 °F 18.5 °F 30.2 °F 100% 29.82 in 0.8 mi WNW 17.3 mph 28.8 mph 0.01 in Snow Light Snow
6:28 AM 30.2 °F 17.8 °F 30.2 °F 100% 29.85 in 1.0 mi WNW 19.6 mph 29.9 mph 0.02 in Snow Light Snow
6:54 AM 30.0 °F 18.3 °F 30.0 °F 100% 29.92 in 1.0 mi WNW 17.3 mph 26.5 mph 0.02 in Snow Light Snow
7:04 AM 30.2 °F 18.1 °F 28.4 °F 93% 29.87 in 0.8 mi WNW 18.4 mph 25.3 mph 0.00 in Snow Light Snow
7:54 AM 30.0 °F 18.3 °F 28.9 °F 96% 29.95 in 0.8 mi WNW 17.3 mph 24.2 mph 0.01 in Snow Light Snow
8:10 AM 30.2 °F 16.5 °F 28.4 °F 93% 29.92 in 0.2 mi WNW 24.2 mph 38.0 mph 0.00 in Fog , Snow Snow
8:30 AM 30.2 °F 17.4 °F 28.4 °F 93% 29.93 in 0.5 mi WNW 20.7 mph 31.1 mph 0.00 in Fog , Snow Snow
8:43 AM 30.2 °F 17.8 °F 28.4 °F 93% 29.94 in 1.0 mi WNW 19.6 mph 32.2 mph 0.00 in Snow Light Snow
8:54 AM 30.0 °F 16.6 °F 28.9 °F 96% 30.01 in 1.0 mi WNW 23.0 mph 29.9 mph 0.00 in Snow Light Snow
9:13 AM 30.2 °F 15.9 °F 28.4 °F 93% 29.97 in 2.0 mi WNW 26.5 mph 35.7 mph 0.00 in Snow Light Snow
9:20 AM 30.2 °F 15.9 °F 28.4 °F 93% 29.97 in 3.0 mi WNW 26.5 mph 34.5 mph 0.00 in Snow Light Snow
9:36 AM 30.2 °F 17.8 °F 28.4 °F 93% 29.97 in 5.0 mi WNW 19.6 mph 28.8 mph 0.00 in Snow Light Snow
9:54 AM 30.9 °F 18.7 °F 28.9 °F 92% 30.04 in 3.0 mi WNW 19.6 mph 28.8 mph 0.00 in Snow Light Snow
10:14 AM 32.0 °F 18.9 °F 28.4 °F 87% 29.98 in 6.0 mi WNW 24.2 mph 31.1 mph 0.00 in Snow Light Snow
10:41 AM 33.8 °F 21.0 °F 28.4 °F 81% 29.99 in 10.0 mi WNW 25.3 mph 35.7 mph 0.00 in   Mostly Cloudy
10:49 AM 33.8 °F 21.3 °F 28.4 °F 81% 30.00 in 10.0 mi WNW 24.2 mph 32.2 mph 0.00 in   Mostly Cloudy
10:54 AM 33.1 °F 21.2 °F 28.0 °F 82% 30.06 in 10.0 mi WNW 20.7 mph 32.2 mph 0.00 in   Mostly Cloudy
11:11 AM 33.8 °F 22.8 °F 28.4 °F 81% 30.01 in 10.0 mi NW 18.4 mph 27.6 mph N/A   Overcast
11:20 AM 33.8 °F 22.5 °F 28.4 °F 81% 30.02 in 10.0 mi WNW 19.6 mph 26.5 mph 0.00 in Snow Light Snow
11:54 AM 35.1 °F 24.1 °F 30.0 °F 82% 30.08 in 10.0 mi NW 19.6 mph 27.6 mph 0.00 in   Scattered Clouds
12:54 PM 39.9 °F 30.2 °F 32.0 °F 73% 30.07 in 10.0 mi WNW 20.7 mph 26.5 mph N/A   Partly Cloudy
1:54 PM 43.0 °F 35.7 °F 33.1 °F 68% 30.08 in 10.0 mi WNW 15.0 mph 25.3 mph N/A   Partly Cloudy
2:54 PM 44.1 °F 38.6 °F 30.0 °F 58% 30.09 in 10.0 mi NW 10.4 mph 20.7 mph N/A   Mostly Cloudy
3:54 PM 48.0 °F - 32.0 °F 54% 30.07 in 10.0 mi NNW 11.5 mph 16.1 mph N/A   Mostly Cloudy
4:54 PM 48.0 °F - 28.0 °F 46% 30.07 in 10.0 mi NNW 6.9 mph - N/A   Clear
5:54 PM 48.0 °F - 28.0 °F 46% 30.05 in 10.0 mi NW 9.2 mph - N/A   Mostly Cloudy
6:54 PM 48.0 °F - 27.0 °F 44% 30.04 in 10.0 mi Calm Calm - N/A   Clear
7:54 PM 46.0 °F 43.1 °F 30.0 °F 54% 30.02 in 10.0 mi East 5.8 mph - N/A   Clear
8:54 PM 42.1 °F 37.7 °F 30.9 °F 65% 30.01 in 10.0 mi Variable 6.9 mph 44.9 mph N/A   Clear
9:54 PM 37.9 °F 32.7 °F 30.9 °F 76% 30.00 in 10.0 mi East 6.9 mph - N/A   Clear
10:54 PM 39.0 °F 32.8 °F 30.9 °F 73% 29.97 in 10.0 mi ESE 9.2 mph - N/A   Clear
11:54 PM 37.9 °F 32.7 °F 28.9 °F 70% 29.93 in 10.0 mi ESE 6.9 mph - N/A   Clear