, MT

(GMT )
West Yellowstone

Weather History for KWYS - September, 2013

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Monday, September 23, 2013

  Actual Average Record
Temperature  
Mean Temperature 46 °F -  
Max Temperature 55 °F 62 °F 75 °F (2011)
Min Temperature 37 °F 27 °F 26 °F (2011)
Degree Days  
Heating Degree Days 19    
Moisture  
Dew Point 40 °F    
Average Humidity 84    
Maximum Humidity 87    
Minimum Humidity 81    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.01 in    
Wind  
Wind Speed 11 mph (SW)    
Max Wind Speed 21 mph    
Max Gust Speed 30 mph    
Visibility 10 miles    
Events Rain    
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. 23, 2013 Rise Set
Actual Time 7:13 AM MDT 7:19 PM MDT
Civil Twilight 6:44 AM MDT 7:48 PM MDT
Nautical Twilight 6:09 AM MDT 8:22 PM MDT
Astronomical Twilight 5:34 AM MDT 8:57 PM MDT
Moon 9:42 PM MDT (9/23) 11:47 AM MDT (9/23)
Length of Visible Light 13h 04m
Length of Day
12h 06m
Waning Gibbous, 81% of the Moon is Illuminated
Sep 23
Waning Gibbous
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

Hourly Weather History & Observations

Time (MDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:10 AM 41.0 °F 34.7 °F 35.6 °F 81% 29.88 in 7.0 mi SSW 10.4 mph - 0.01 in Rain Light Rain
12:30 AM 39.2 °F 34.2 °F 35.6 °F 87% 29.88 in 10.0 mi SW 6.9 mph - 0.01 in   Overcast
12:50 AM 39.2 °F 34.2 °F 35.6 °F 87% 29.88 in 10.0 mi SSW 6.9 mph - 0.01 in   Overcast
1:10 AM 39.2 °F 33.0 °F 35.6 °F 87% 29.88 in 10.0 mi SSW 9.2 mph - N/A   Overcast
1:30 AM 39.2 °F 33.6 °F 35.6 °F 87% 29.88 in 10.0 mi SW 8.1 mph - N/A   Overcast
1:50 AM 41.0 °F 35.8 °F 35.6 °F 81% 29.88 in 10.0 mi SW 8.1 mph - N/A   Overcast
2:10 AM 41.0 °F 35.8 °F 35.6 °F 81% 29.89 in 10.0 mi SSW 8.1 mph - N/A   Overcast
2:30 AM 41.0 °F 35.8 °F 35.6 °F 81% 29.90 in 10.0 mi SW 8.1 mph - N/A   Mostly Cloudy
2:50 AM 39.2 °F 33.6 °F 35.6 °F 87% 29.90 in 10.0 mi SW 8.1 mph - N/A   Overcast
3:10 AM 39.2 °F 33.6 °F 35.6 °F 87% 29.90 in 10.0 mi SSW 8.1 mph - N/A   Mostly Cloudy
3:30 AM 39.2 °F 33.6 °F 35.6 °F 87% 29.91 in 10.0 mi SW 8.1 mph - N/A   Overcast
3:50 AM 39.2 °F 34.2 °F 35.6 °F 87% 29.92 in 10.0 mi SW 6.9 mph - N/A   Overcast
4:10 AM 39.2 °F 33.0 °F 35.6 °F 87% 29.93 in 10.0 mi SW 9.2 mph - N/A   Overcast
4:30 AM 39.2 °F 33.0 °F 35.6 °F 87% 29.93 in 10.0 mi SSW 9.2 mph - N/A   Mostly Cloudy
4:50 AM 39.2 °F 32.0 °F 35.6 °F 87% 29.92 in 10.0 mi SSW 11.5 mph - N/A   Scattered Clouds
5:10 AM 37.4 °F 31.4 °F 33.8 °F 87% 29.93 in 10.0 mi SW 8.1 mph - N/A   Clear
5:30 AM 37.4 °F 32.8 °F 33.8 °F 87% 29.94 in 10.0 mi SW 5.8 mph - N/A   Clear
5:50 AM 37.4 °F 33.8 °F 32.0 °F 81% 29.94 in 10.0 mi West 4.6 mph - N/A   Clear
6:10 AM 37.4 °F 31.4 °F 32.0 °F 81% 29.95 in 10.0 mi SW 8.1 mph - N/A   Clear
6:30 AM 37.4 °F 30.3 °F 32.0 °F 81% 29.96 in 10.0 mi WSW 10.4 mph 16.1 mph N/A   Partly Cloudy
6:50 AM 37.4 °F 32.1 °F 32.0 °F 81% 29.97 in 10.0 mi WSW 6.9 mph - N/A   Mostly Cloudy
7:10 AM 37.4 °F 30.8 °F 32.0 °F 81% 29.98 in 10.0 mi WSW 9.2 mph - N/A   Overcast
7:30 AM 37.4 °F 30.8 °F 32.0 °F 81% 29.99 in 10.0 mi SW 9.2 mph 16.1 mph N/A   Overcast
7:50 AM 37.4 °F 30.3 °F 32.0 °F 81% 29.99 in 10.0 mi SW 10.4 mph 17.3 mph N/A   Scattered Clouds
8:10 AM 37.4 °F 32.1 °F 32.0 °F 81% 29.99 in 10.0 mi WSW 6.9 mph - N/A   Mostly Cloudy
8:30 AM 39.2 °F 32.0 °F 35.6 °F 87% 29.99 in 10.0 mi SW 11.5 mph 20.7 mph N/A   Scattered Clouds
8:50 AM 41.0 °F 33.9 °F 35.6 °F 81% 30.00 in 10.0 mi SW 12.7 mph 23.0 mph N/A   Clear
9:10 AM 41.0 °F 35.2 °F 35.6 °F 81% 30.01 in 10.0 mi WSW 9.2 mph 17.3 mph N/A   Scattered Clouds
9:30 AM 41.0 °F 33.9 °F 37.4 °F 87% 30.02 in 10.0 mi SSW 12.7 mph 16.1 mph N/A   Mostly Cloudy
9:50 AM 42.8 °F 37.0 °F 37.4 °F 81% 30.03 in 10.0 mi SSW 10.4 mph 19.6 mph N/A   Scattered Clouds
10:10 AM 41.0 °F 35.2 °F 37.4 °F 87% 30.03 in 10.0 mi SW 9.2 mph 19.6 mph N/A   Mostly Cloudy
10:30 AM 41.0 °F 33.9 °F 37.4 °F 87% 30.03 in 10.0 mi SW 12.7 mph 21.9 mph N/A   Overcast
10:50 AM 42.8 °F 36.6 °F 37.4 °F 81% 30.04 in 10.0 mi SW 11.5 mph 24.2 mph N/A   Overcast
11:10 AM 44.6 °F 38.4 °F 39.2 °F 81% 30.05 in 10.0 mi SW 12.7 mph - N/A   Overcast
11:30 AM 44.6 °F 37.2 °F 41.0 °F 87% 30.05 in 10.0 mi SW 17.3 mph 29.9 mph N/A   Overcast
11:50 AM 44.6 °F 36.9 °F 41.0 °F 87% 30.05 in 10.0 mi SW 18.4 mph 28.8 mph N/A   Mostly Cloudy
12:10 PM 46.4 °F 39.8 °F 41.0 °F 81% 30.06 in 10.0 mi SSW 16.1 mph 21.9 mph N/A   Mostly Cloudy
12:30 PM 48.2 °F - 42.8 °F 82% 30.06 in 10.0 mi South 16.1 mph 25.3 mph N/A   Scattered Clouds
12:50 PM 48.2 °F - 42.8 °F 82% 30.06 in 10.0 mi SSW 15.0 mph 21.9 mph N/A   Scattered Clouds
1:10 PM 48.2 °F - 44.6 °F 87% 30.06 in 10.0 mi SW 15.0 mph 20.7 mph N/A   Mostly Cloudy
1:30 PM 50.0 °F - 46.4 °F 87% 30.05 in 10.0 mi SW 17.3 mph 25.3 mph N/A   Scattered Clouds
1:50 PM 50.0 °F - 46.4 °F 87% 30.05 in 10.0 mi SSW 12.7 mph 19.6 mph N/A   Partly Cloudy
2:10 PM 51.8 °F - 46.4 °F 82% 30.05 in 10.0 mi SW 17.3 mph 23.0 mph N/A   Clear
2:30 PM 51.8 °F - 46.4 °F 82% 30.05 in 10.0 mi SW 15.0 mph 21.9 mph N/A   Clear
2:50 PM 53.6 °F - 48.2 °F 82% 30.05 in 10.0 mi SW 13.8 mph 19.6 mph N/A   Clear
3:10 PM 53.6 °F - 48.2 °F 82% 30.06 in 10.0 mi SW 15.0 mph 23.0 mph N/A   Scattered Clouds
3:30 PM 53.6 °F - 48.2 °F 82% 30.05 in 10.0 mi SSW 19.6 mph 25.3 mph N/A   Scattered Clouds
3:50 PM 53.6 °F - 48.2 °F 82% 30.05 in 10.0 mi SSW 16.1 mph 25.3 mph N/A   Scattered Clouds
4:10 PM 53.6 °F - 48.2 °F 82% 30.05 in 10.0 mi SW 15.0 mph 26.5 mph N/A   Scattered Clouds
4:30 PM 53.6 °F - 48.2 °F 82% 30.05 in 10.0 mi SSW 16.1 mph 27.6 mph N/A   Partly Cloudy
4:50 PM 53.6 °F - 48.2 °F 82% 30.04 in 10.0 mi SSW 18.4 mph 26.5 mph N/A   Partly Cloudy
5:10 PM 55.4 °F - 50.0 °F 82% 30.04 in 10.0 mi SSW 20.7 mph 26.5 mph N/A   Scattered Clouds
5:30 PM 55.4 °F - 50.0 °F 82% 30.04 in 10.0 mi SSW 18.4 mph 25.3 mph N/A   Partly Cloudy
5:50 PM 55.4 °F - 50.0 °F 82% 30.05 in 10.0 mi SSW 15.0 mph 20.7 mph N/A   Clear
6:10 PM 53.6 °F - 48.2 °F 82% 30.05 in 10.0 mi SSW 18.4 mph 23.0 mph N/A   Clear
6:30 PM 53.6 °F - 48.2 °F 82% 30.05 in 10.0 mi SSW 12.7 mph 21.9 mph N/A   Partly Cloudy
6:50 PM 50.0 °F - 46.4 °F 87% 30.05 in 10.0 mi SSW 18.4 mph 26.5 mph N/A   Clear
7:10 PM 50.0 °F - 44.6 °F 82% 30.05 in 10.0 mi SSW 19.6 mph 27.6 mph N/A   Clear
7:30 PM 48.2 °F - 44.6 °F 87% 30.06 in 10.0 mi SSW 16.1 mph 27.6 mph N/A   Clear
7:50 PM 48.2 °F - 42.8 °F 82% 30.07 in 10.0 mi SSW 13.8 mph 20.7 mph N/A   Clear
8:10 PM 46.4 °F 40.7 °F 42.8 °F 87% 30.08 in 10.0 mi SSW 12.7 mph 20.7 mph N/A   Clear
8:30 PM 46.4 °F 39.2 °F 41.0 °F 81% 30.09 in 10.0 mi SSW 18.4 mph 24.2 mph N/A   Clear
8:50 PM 46.4 °F 39.8 °F 41.0 °F 81% 30.09 in 10.0 mi SSW 16.1 mph 20.7 mph N/A   Clear
9:10 PM 46.4 °F 40.1 °F 41.0 °F 81% 30.10 in 10.0 mi SSW 15.0 mph 24.2 mph N/A   Clear
9:30 PM 46.4 °F 40.7 °F 41.0 °F 81% 30.10 in 10.0 mi SSW 12.7 mph 18.4 mph N/A   Clear
9:50 PM 46.4 °F 41.5 °F 41.0 °F 81% 30.10 in 10.0 mi SW 10.4 mph - N/A   Clear
10:10 PM 44.6 °F 41.4 °F 41.0 °F 87% 30.10 in 10.0 mi WSW 5.8 mph - N/A   Clear
10:30 PM 44.6 °F 41.4 °F 39.2 °F 81% 30.10 in 10.0 mi West 5.8 mph - N/A   Clear
10:50 PM 44.6 °F 42.2 °F 39.2 °F 81% 30.10 in 10.0 mi WSW 4.6 mph - N/A   Clear
11:10 PM 42.8 °F 40.1 °F 39.2 °F 87% 30.10 in 10.0 mi SSW 4.6 mph - N/A   Clear
11:30 PM 39.2 °F 37.0 °F 35.6 °F 87% 30.10 in 10.0 mi NNE 3.5 mph - N/A   Clear
11:50 PM 39.2 °F - 35.6 °F 87% 30.09 in 10.0 mi Calm Calm - N/A   Clear