Weather History for Lewistown, MT

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Sunday, September 16, 2012

  Actual Average Record
Temperature  
Mean Temperature 52 °F 55 °F  
Max Temperature 63 °F 69 °F 91 °F (1998)
Min Temperature 41 °F 41 °F 22 °F (1912)
Degree Days  
Heating Degree Days 13 11  
Month to date heating degree days 119 131  
Since 1 July heating degree days 191 289  
Cooling Degree Days 0 0  
Month to date cooling degree days 7 13  
Year to date cooling degree days 314 209  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 32 °F    
Average Humidity 49    
Maximum Humidity 65    
Minimum Humidity 33    
Precipitation  
Precipitation 0.00 in 0.04 in 0.97 in (1947)
Month to date precipitation 0.02 0.74  
Year to date precipitation 12.85 13.74  
Snow  
Snow 0.00 in - - ()
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.16 in    
Wind  
Wind Speed 7 mph (East)    
Max Wind Speed 16 mph    
Max Gust Speed 21 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Sep. 16, 2012 Rise Set
Actual Time 6:57 AM MDT 7:26 PM MDT
Civil Twilight 6:26 AM MDT 7:57 PM MDT
Nautical Twilight 5:50 AM MDT 8:33 PM MDT
Astronomical Twilight 5:12 AM MDT 9:10 PM MDT
Moon 7:47 AM MDT (9/16) 7:24 PM MDT (9/16)
Length of Visible Light 13h 30m
Length of Day
12h 29m
New Moon, 1% of the Moon is Illuminated
Sep 16
New Moon
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New

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 54.0 °F - 32.0 °F 43% 30.05 in 10.0 mi ESE 6.9 mph - N/A   Mostly Cloudy
1:54 AM 54.0 °F - 30.9 °F 41% 30.02 in 10.0 mi ESE 9.2 mph - N/A   Partly Cloudy
2:54 AM 52.0 °F - 30.9 °F 45% 30.02 in 10.0 mi ESE 5.8 mph - N/A   Clear
3:54 AM 48.9 °F - 32.0 °F 52% 30.03 in 10.0 mi East 3.5 mph - N/A   Mostly Cloudy
4:54 AM 51.1 °F - 30.0 °F 44% 30.03 in 10.0 mi SSW 5.8 mph - N/A   Partly Cloudy
5:54 AM 46.9 °F - 30.9 °F 54% 30.07 in 10.0 mi WNW 3.5 mph - N/A   Partly Cloudy
6:54 AM 42.1 °F 40.2 °F 28.9 °F 60% 30.12 in 10.0 mi WSW 3.5 mph - N/A   Clear
7:54 AM 45.0 °F 43.5 °F 30.9 °F 58% 30.14 in 10.0 mi Variable 3.5 mph - N/A   Clear
8:54 AM 48.0 °F - 32.0 °F 54% 30.18 in 10.0 mi Calm Calm - N/A   Clear
9:54 AM 55.9 °F - 30.9 °F 39% 30.19 in 10.0 mi North 12.7 mph 17.3 mph N/A   Partly Cloudy
10:54 AM 59.0 °F - 30.9 °F 35% 30.20 in 10.0 mi North 11.5 mph - N/A   Clear
11:54 AM 60.1 °F - 32.0 °F 35% 30.21 in 10.0 mi North 9.2 mph - N/A   Clear
12:54 PM 62.1 °F - 33.1 °F 34% 30.20 in 10.0 mi NNW 8.1 mph - N/A   Clear
1:54 PM 62.1 °F - 33.1 °F 34% 30.20 in 10.0 mi North 6.9 mph 16.1 mph N/A   Partly Cloudy
2:54 PM 62.1 °F - 33.1 °F 34% 30.20 in 10.0 mi East 9.2 mph - N/A   Clear
3:54 PM 62.1 °F - 34.0 °F 35% 30.18 in 10.0 mi East 11.5 mph - N/A   Clear
4:54 PM 60.1 °F - 34.0 °F 38% 30.19 in 10.0 mi East 8.1 mph - N/A   Clear
5:54 PM 60.1 °F - 34.0 °F 38% 30.19 in 10.0 mi East 8.1 mph - N/A   Clear
6:54 PM 57.0 °F - 33.1 °F 40% 30.22 in 10.0 mi East 10.4 mph - N/A   Clear
7:54 PM 51.1 °F - 33.1 °F 50% 30.24 in 10.0 mi ESE 6.9 mph - N/A   Clear
8:54 PM 48.0 °F - 33.1 °F 56% 30.24 in 10.0 mi SE 4.6 mph - N/A   Clear
9:54 PM 48.0 °F - 34.0 °F 58% 30.22 in 10.0 mi ENE 6.9 mph - N/A   Clear
10:54 PM 46.0 °F 43.1 °F 33.1 °F 61% 30.22 in 10.0 mi SE 5.8 mph - N/A   Clear
11:54 PM 45.0 °F 41.8 °F 33.1 °F 63% 30.22 in 10.0 mi SE 5.8 mph - N/A   Clear