, MT

(GMT )
West Yellowstone

Weather History for KWYS - September, 2012

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Sunday, September 30, 2012

  Actual Average Record
Temperature  
Mean Temperature 48 °F -  
Max Temperature 68 °F 62 °F 75 °F (2010)
Min Temperature 28 °F 26 °F 26 °F (2011)
Degree Days  
Heating Degree Days 17    
Moisture  
Dew Point -    
Average Humidity    
Maximum Humidity    
Minimum Humidity    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.34 in    
Wind  
Wind Speed 2 mph (WNW)    
Max Wind Speed 12 mph    
Max Gust Speed 20 mph    
Visibility 10 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 30, 2012 Rise Set
Actual Time 7:21 AM MDT 7:05 PM MDT
Civil Twilight 6:52 AM MDT 7:34 PM MDT
Nautical Twilight 6:18 AM MDT 8:08 PM MDT
Astronomical Twilight 5:44 AM MDT 8:43 PM MDT
Moon 7:06 PM MDT 7:59 AM MDT
Length of Visible Light 12h 42m
Length of Day
11h 44m
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
12:15 AM 39.2 °F - - N/A% 30.32 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:40 AM 39.2 °F - - N/A% 30.31 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:55 AM 39.2 °F 37.0 °F - N/A% 30.32 in 10.0 mi North 3.5 mph - N/A   Mostly Cloudy
1:15 AM 37.4 °F - - N/A% 30.32 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:35 AM 39.2 °F - - N/A% 30.32 in 10.0 mi Calm Calm - N/A   Overcast
1:55 AM 39.2 °F - - N/A% 30.32 in 10.0 mi Calm Calm - N/A   Overcast
2:15 AM 39.2 °F - - N/A% 30.32 in 10.0 mi Calm Calm - N/A   Overcast
2:35 AM 39.2 °F - - N/A% 30.31 in 10.0 mi Calm Calm - N/A   Overcast
2:55 AM 39.2 °F - - N/A% 30.32 in 10.0 mi Calm Calm - N/A   Overcast
3:35 AM 39.2 °F - - N/A% 30.31 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:00 AM 37.4 °F - - N/A% 30.31 in 10.0 mi Calm Calm - N/A   Clear
4:20 AM 35.6 °F - - N/A% 30.31 in 10.0 mi Calm Calm - N/A   Clear
4:35 AM 33.8 °F 30.8 °F - N/A% 30.31 in 10.0 mi SSW 3.5 mph - N/A   Clear
4:55 AM 32.0 °F - - N/A% 30.32 in 10.0 mi Calm Calm - N/A   Clear
5:15 AM 32.0 °F - - N/A% 30.32 in 10.0 mi Calm Calm - N/A   Clear
5:35 AM 32.0 °F - - N/A% 30.32 in 10.0 mi Calm Calm - N/A   Clear
5:55 AM 32.0 °F - - N/A% 30.33 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:15 AM 30.2 °F - - N/A% 30.34 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:35 AM 30.2 °F 26.7 °F - N/A% 30.34 in 10.0 mi South 3.5 mph - N/A   Clear
6:55 AM 28.4 °F - - N/A% 30.34 in 10.0 mi Calm Calm - N/A   Clear
7:15 AM 28.4 °F - - N/A% 30.35 in 10.0 mi Calm Calm - N/A   Clear
7:35 AM 28.4 °F - - N/A% 30.35 in 10.0 mi Calm Calm - N/A   Clear
7:55 AM 30.2 °F - - N/A% 30.35 in 10.0 mi Calm Calm - N/A   Clear
8:15 AM 32.0 °F - - N/A% 30.36 in 10.0 mi Calm Calm - N/A   Clear
8:35 AM 35.6 °F - - N/A% 30.36 in 10.0 mi Calm Calm - N/A   Clear
8:55 AM 39.2 °F - - N/A% 30.37 in 10.0 mi Calm Calm - N/A   Clear
9:15 AM 41.0 °F - - N/A% 30.37 in 10.0 mi Calm Calm - N/A   Clear
9:35 AM 44.6 °F - - N/A% 30.37 in 10.0 mi Calm Calm - N/A   Clear
9:55 AM 46.4 °F 45.2 °F - N/A% 30.37 in 10.0 mi East 3.5 mph - N/A   Clear
10:15 AM 48.2 °F - - N/A% 30.36 in 10.0 mi Calm Calm - N/A   Clear
10:35 AM 50.0 °F - - N/A% 30.36 in 10.0 mi ENE 3.5 mph - N/A   Clear
10:55 AM 51.8 °F - - N/A% 30.35 in 10.0 mi Calm Calm - N/A   Clear
11:15 AM 55.4 °F - - N/A% 30.35 in 10.0 mi Calm Calm - N/A   Clear
11:35 AM 59.0 °F - - N/A% 30.35 in 10.0 mi WSW 4.6 mph - N/A   Clear
11:55 AM 59.0 °F - - N/A% 30.35 in 10.0 mi West 3.5 mph - N/A   Clear
12:15 PM 62.6 °F - - N/A% 30.34 in 10.0 mi Calm Calm - N/A   Clear
12:35 PM 62.6 °F - - N/A% 30.34 in 10.0 mi West 9.2 mph - N/A   Clear
12:55 PM 62.6 °F - - N/A% 30.33 in 10.0 mi West 4.6 mph - N/A   Partly Cloudy
1:15 PM 62.6 °F - - N/A% 30.33 in 10.0 mi West 3.5 mph - N/A   Partly Cloudy
1:55 PM 64.4 °F - - N/A% 30.32 in 10.0 mi West 11.5 mph 17.3 mph N/A   Overcast
2:15 PM 66.2 °F - - N/A% 30.31 in 10.0 mi West 9.2 mph 18.4 mph N/A   Mostly Cloudy
2:35 PM 66.2 °F - - N/A% 30.31 in 10.0 mi WSW 9.2 mph - N/A   Scattered Clouds
2:55 PM 66.2 °F - - N/A% 30.31 in 10.0 mi NW 6.9 mph - N/A   Scattered Clouds
3:15 PM 66.2 °F - - N/A% 30.30 in 10.0 mi WSW 8.1 mph - N/A   Scattered Clouds
3:35 PM 66.2 °F - - N/A% 30.31 in 10.0 mi NNW 6.9 mph - N/A   Mostly Cloudy
3:55 PM 68.0 °F - - N/A% 30.30 in 10.0 mi WNW 10.4 mph 16.1 mph N/A   Partly Cloudy
4:15 PM 68.0 °F - - N/A% 30.31 in 10.0 mi WNW 9.2 mph 19.6 mph N/A   Clear
4:35 PM 68.0 °F - - N/A% 30.30 in 10.0 mi North 8.1 mph - N/A   Clear
4:55 PM 68.0 °F - - N/A% 30.30 in 10.0 mi North 9.2 mph - N/A   Clear
5:15 PM 66.2 °F - - N/A% 30.31 in 10.0 mi NNW 10.4 mph 16.1 mph N/A   Clear
5:35 PM 66.2 °F - - N/A% 30.31 in 10.0 mi NNW 9.2 mph - N/A   Clear
5:55 PM 64.4 °F - - N/A% 30.31 in 10.0 mi NW 4.6 mph - N/A   Clear
6:15 PM 64.4 °F - - N/A% 30.31 in 10.0 mi NW 4.6 mph - N/A   Clear
6:35 PM 64.4 °F - - N/A% 30.32 in 10.0 mi NW 4.6 mph - N/A   Clear
6:55 PM 62.6 °F - - N/A% 30.33 in 10.0 mi NW 3.5 mph - N/A   Clear
7:15 PM 59.0 °F - - N/A% 30.33 in 10.0 mi WNW 3.5 mph - N/A   Clear
7:35 PM 57.2 °F - - N/A% 30.34 in 10.0 mi Calm Calm - N/A   Clear
7:55 PM 53.6 °F - - N/A% 30.35 in 10.0 mi WNW 3.5 mph - N/A   Clear
8:15 PM 53.6 °F - - N/A% 30.36 in 10.0 mi North 5.8 mph - N/A   Clear
8:35 PM 53.6 °F - - N/A% 30.36 in 10.0 mi North 3.5 mph - N/A   Clear
8:55 PM 46.4 °F 45.2 °F - N/A% 30.37 in 10.0 mi SSE 3.5 mph - N/A   Clear
9:15 PM 46.4 °F - - N/A% 30.38 in 10.0 mi Calm Calm - N/A   Clear
9:35 PM 42.8 °F - - N/A% 30.38 in 10.0 mi Calm Calm - N/A   Clear
9:55 PM 41.0 °F 38.0 °F - N/A% 30.38 in 10.0 mi WSW 4.6 mph - N/A   Clear
10:20 PM 39.2 °F - - N/A% 30.38 in 10.0 mi Calm Calm - N/A   Clear
10:35 PM 39.2 °F - - N/A% 30.38 in 10.0 mi Calm Calm - N/A   Clear
10:55 PM 37.4 °F 34.9 °F - N/A% 30.39 in 10.0 mi ESE 3.5 mph - N/A   Clear
11:15 PM 35.6 °F - - N/A% 30.40 in 10.0 mi Calm Calm - N/A   Clear
11:40 PM 35.6 °F - - N/A% 30.40 in 10.0 mi Calm Calm - N/A   Clear
11:55 PM 32.0 °F - - N/A% 30.40 in 10.0 mi Calm Calm - N/A   Clear