Weather History for Lewistown, MT

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Sunday, September 30, 2012

  Actual Average Record
Temperature  
Mean Temperature 55 °F 49 °F  
Max Temperature 68 °F 63 °F 93 °F (1906)
Min Temperature 41 °F 36 °F 17 °F (1985)
Degree Days  
Heating Degree Days 10 16  
Month to date heating degree days 210 319  
Since 1 July heating degree days 282 477  
Cooling Degree Days 0 0  
Month to date cooling degree days 7 14  
Year to date cooling degree days 314 210  
Growing Degree Days 6 (Base 50)    
Moisture  
Dew Point 37 °F    
Average Humidity 54    
Maximum Humidity 76    
Minimum Humidity 32    
Precipitation  
Precipitation 0.00 in 0.04 in 1.02 in (1926)
Month to date precipitation 0.02 1.35  
Year to date precipitation 12.85 14.35  
Snow  
Snow 0.00 in - - ()
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.17 in    
Wind  
Wind Speed 8 mph (WNW)    
Max Wind Speed 10 mph    
Max Gust Speed 14 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Sep. 30, 2012 Rise Set
Actual Time 7:16 AM MDT 6:58 PM MDT
Civil Twilight 6:45 AM MDT 7:28 PM MDT
Nautical Twilight 6:10 AM MDT 8:03 PM MDT
Astronomical Twilight 5:34 AM MDT 8:39 PM MDT
Moon 6:56 PM MDT (9/30) 7:55 AM MDT (9/30)
Length of Visible Light 12h 42m
Length of Day
11h 42m
Full, 100% of the Moon is Illuminated
Sep 30
Full
Oct 8
Last Quarter
Oct 15
New
Oct 21
First Quarter
Oct 29
Full

Hourly Weather History & Observations

Time (MDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
1:54 AM 48.0 °F - 35.1 °F 61% 30.06 in 10.0 mi SE 6.9 mph - N/A   Clear
2:54 AM 48.0 °F - 35.1 °F 61% 30.05 in 10.0 mi SE 3.5 mph - N/A   Partly Cloudy
3:54 AM 48.0 °F - 35.1 °F 61% 30.06 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:54 AM 46.9 °F - 35.1 °F 63% 30.08 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:54 AM 45.0 °F - 35.1 °F 68% 30.10 in 10.0 mi Calm Calm - N/A   Overcast
6:54 AM 48.9 °F - 33.1 °F 54% 30.10 in 10.0 mi SSW 9.2 mph - N/A   Mostly Cloudy
7:54 AM 51.1 °F - 35.1 °F 54% 30.13 in 10.0 mi SW 9.2 mph - N/A   Mostly Cloudy
8:54 AM 57.9 °F - 35.1 °F 42% 30.12 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
9:54 AM 61.0 °F - 36.0 °F 39% 30.14 in 10.0 mi NW 9.2 mph - N/A   Clear
10:54 AM 64.0 °F - 37.0 °F 37% 30.15 in 10.0 mi NW 9.2 mph 16.1 mph N/A   Clear
11:54 AM 68.0 °F - 37.9 °F 33% 30.14 in 10.0 mi NNW 12.7 mph 19.6 mph N/A   Clear
12:54 PM 64.9 °F - 39.0 °F 39% 30.15 in 10.0 mi NNW 13.8 mph 23.0 mph N/A   Overcast
2:54 PM 66.9 °F - 37.9 °F 34% 30.15 in 10.0 mi NNW 15.0 mph 24.2 mph N/A   Clear
3:54 PM 66.0 °F - 37.9 °F 36% 30.17 in 10.0 mi NNW 16.1 mph 25.3 mph N/A   Clear
4:54 PM 66.0 °F - 37.0 °F 34% 30.19 in 10.0 mi NNW 13.8 mph 24.2 mph N/A   Clear
5:54 PM 62.1 °F - 39.0 °F 43% 30.22 in 10.0 mi North 12.7 mph - N/A   Clear
6:54 PM 57.0 °F - 37.9 °F 49% 30.24 in 10.0 mi North 6.9 mph - N/A   Clear
7:54 PM 51.1 °F - 37.0 °F 59% 30.27 in 10.0 mi SW 3.5 mph - N/A   Clear
8:54 PM 48.9 °F - 37.0 °F 64% 30.27 in 10.0 mi South 6.9 mph - N/A   Unknown
9:54 PM 46.9 °F - 37.0 °F 68% 30.30 in 10.0 mi SE 9.2 mph - N/A   Clear
10:54 PM 46.9 °F - 39.0 °F 74% 30.30 in 10.0 mi ESE 6.9 mph - N/A   Clear
11:54 PM 45.0 °F 41.2 °F 37.9 °F 76% 30.29 in 10.0 mi ESE 6.9 mph - N/A   Clear