, MT

(GMT )
West Yellowstone

Weather History for KWYS - September, 2013

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Monday, September 30, 2013

  Actual Average Record
Temperature  
Mean Temperature 42 °F -  
Max Temperature 53 °F 62 °F 75 °F (2010)
Min Temperature 32 °F 26 °F 26 °F (2011)
Degree Days  
Heating Degree Days 22    
Moisture  
Dew Point 38 °F    
Average Humidity 84    
Maximum Humidity 87    
Minimum Humidity 81    
Precipitation  
Precipitation 0.20 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.84 in    
Wind  
Wind Speed 15 mph (SW)    
Max Wind Speed 32 mph    
Max Gust Speed 60 mph    
Visibility 9 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. 30, 2013 Rise Set
Actual Time 7:21 AM MDT 7:06 PM MDT
Civil Twilight 6:52 AM MDT 7:35 PM MDT
Nautical Twilight 6:18 AM MDT 8:09 PM MDT
Astronomical Twilight 5:44 AM MDT 8:43 PM MDT
Moon 2:52 AM MDT (9/30) 4:46 PM MDT (9/30)
Length of Visible Light 12h 42m
Length of Day
11h 44m
Waning Crescent, 18% of the Moon is Illuminated
Sep 30
Waning Crescent
Oct 4
New
Oct 11
First Quarter
Oct 18
Full
Oct 26
Last Quarter

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 44.6 °F 37.4 °F 39.2 °F 81% 29.85 in 10.0 mi SSW 16.1 mph 28.8 mph N/A   Overcast
12:30 AM 44.6 °F 37.4 °F 39.2 °F 81% 29.85 in 10.0 mi SSW 16.1 mph 28.8 mph N/A   Overcast
12:50 AM 44.6 °F 37.2 °F 39.2 °F 81% 29.85 in 10.0 mi SW 17.3 mph 25.3 mph N/A   Overcast
1:10 AM 44.6 °F 38.1 °F 39.2 °F 81% 29.84 in 10.0 mi SW 13.8 mph 23.0 mph N/A   Overcast
1:30 AM 44.6 °F 38.1 °F 39.2 °F 81% 29.84 in 10.0 mi SW 13.8 mph 24.2 mph N/A   Overcast
1:50 AM 44.6 °F 38.1 °F 39.2 °F 81% 29.85 in 10.0 mi SW 13.8 mph 26.5 mph N/A   Overcast
2:10 AM 44.6 °F 37.4 °F 39.2 °F 81% 29.84 in 10.0 mi SSW 16.1 mph 23.0 mph N/A   Overcast
2:30 AM 44.6 °F 38.4 °F 39.2 °F 81% 29.83 in 10.0 mi SW 12.7 mph 18.4 mph N/A   Overcast
2:50 AM 44.6 °F 38.4 °F 41.0 °F 87% 29.82 in 10.0 mi WSW 12.7 mph 20.7 mph N/A   Overcast
3:10 AM 44.6 °F 40.7 °F 39.2 °F 81% 29.81 in 10.0 mi West 6.9 mph 21.9 mph N/A   Overcast
3:30 AM 44.6 °F 40.2 °F 41.0 °F 87% 29.80 in 10.0 mi West 8.1 mph - N/A   Overcast
3:50 AM 46.4 °F 40.1 °F 41.0 °F 81% 29.80 in 10.0 mi WSW 15.0 mph 26.5 mph N/A   Overcast
4:10 AM 46.4 °F 41.1 °F 41.0 °F 81% 29.80 in 10.0 mi SW 11.5 mph 20.7 mph N/A   Overcast
4:30 AM 46.4 °F 42.9 °F 41.0 °F 81% 29.80 in 10.0 mi West 6.9 mph - N/A   Overcast
4:50 AM 46.4 °F 40.7 °F 41.0 °F 81% 29.80 in 10.0 mi WSW 12.7 mph 19.6 mph N/A   Overcast
5:10 AM 46.4 °F 39.0 °F 41.0 °F 81% 29.79 in 10.0 mi SW 19.6 mph 28.8 mph N/A   Overcast
5:30 AM 44.6 °F 36.6 °F 41.0 °F 87% 29.79 in 10.0 mi SW 19.6 mph 28.8 mph N/A   Overcast
5:50 AM 44.6 °F 36.9 °F 41.0 °F 87% 29.79 in 10.0 mi SW 18.4 mph 32.2 mph N/A   Overcast
6:10 AM 44.6 °F 36.9 °F 41.0 °F 87% 29.79 in 10.0 mi SW 18.4 mph 26.5 mph N/A Rain Light Rain
6:30 AM 44.6 °F 36.4 °F 41.0 °F 87% 29.78 in 8.0 mi SW 20.7 mph 33.4 mph N/A   Overcast
6:50 AM 44.6 °F 35.3 °F 39.2 °F 81% 29.77 in 5.0 mi SSW 26.5 mph 35.7 mph N/A Rain Light Rain
7:10 AM 44.6 °F 36.1 °F 39.2 °F 81% 29.76 in 9.0 mi SSW 21.9 mph 39.1 mph N/A Rain Light Rain
7:30 AM 44.6 °F 35.5 °F 39.2 °F 81% 29.75 in 10.0 mi SSW 25.3 mph 41.4 mph N/A   Overcast
7:50 AM 44.6 °F 35.9 °F 39.2 °F 81% 29.75 in 9.0 mi SW 23.0 mph 36.8 mph N/A   Overcast
8:10 AM 44.6 °F 35.5 °F 39.2 °F 81% 29.74 in 9.0 mi SW 25.3 mph 40.3 mph N/A   Overcast
8:30 AM 44.6 °F 34.7 °F 39.2 °F 81% 29.74 in 9.0 mi SSW 29.9 mph 42.6 mph N/A   Overcast
8:50 AM 44.6 °F 34.7 °F 41.0 °F 87% 29.74 in 8.0 mi SSW 29.9 mph 44.9 mph N/A   Overcast
9:10 AM 46.4 °F 37.9 °F 41.0 °F 81% 29.75 in 9.0 mi SSW 25.3 mph 41.4 mph N/A   Overcast
9:30 AM 46.4 °F 37.2 °F 41.0 °F 81% 29.74 in 10.0 mi SSW 29.9 mph 42.6 mph N/A   Overcast
9:50 AM 46.4 °F 38.1 °F 41.0 °F 81% 29.75 in 10.0 mi SW 24.2 mph 40.3 mph N/A   Overcast
10:10 AM 48.2 °F - 42.8 °F 82% 29.75 in 10.0 mi SW 27.6 mph 42.6 mph N/A   Overcast
10:30 AM 48.2 °F - 42.8 °F 82% 29.74 in 10.0 mi SW 26.5 mph 54.1 mph N/A   Overcast
10:50 AM 50.0 °F - 44.6 °F 82% 29.74 in 10.0 mi SW 21.9 mph 35.7 mph N/A   Overcast
11:10 AM 48.2 °F - 44.6 °F 87% 29.74 in 10.0 mi SSW 27.6 mph 38.0 mph N/A   Mostly Cloudy
11:30 AM 50.0 °F - 46.4 °F 87% 29.73 in 10.0 mi SSW 24.2 mph 33.4 mph N/A   Mostly Cloudy
11:50 AM 50.0 °F - 46.4 °F 87% 29.73 in 10.0 mi SSW 27.6 mph 40.3 mph N/A   Mostly Cloudy
12:10 PM 50.0 °F - 46.4 °F 87% 29.74 in 10.0 mi SW 24.2 mph 38.0 mph N/A   Overcast
12:30 PM 51.8 °F - 46.4 °F 82% 29.74 in 10.0 mi SSW 26.5 mph 38.0 mph N/A   Overcast
12:50 PM 53.6 °F - 48.2 °F 82% 29.73 in 10.0 mi SW 32.2 mph 59.8 mph N/A   Mostly Cloudy
1:10 PM 50.0 °F - 46.4 °F 87% 29.76 in 10.0 mi SW 25.3 mph 48.3 mph N/A Rain Light Rain
1:30 PM 46.4 °F 41.5 °F 41.0 °F 81% 29.80 in 3.0 mi West 10.4 mph 28.8 mph 0.04 in Rain Rain
1:50 PM 41.0 °F 36.4 °F 37.4 °F 87% 29.82 in 3.0 mi West 6.9 mph 16.1 mph 0.11 in Rain Rain
2:10 PM 39.2 °F 34.2 °F 35.6 °F 87% 29.84 in 3.0 mi West 6.9 mph - 0.01 in Rain Light Rain
2:30 PM 39.2 °F 35.9 °F 35.6 °F 87% 29.84 in 8.0 mi West 4.6 mph - 0.02 in Rain Light Rain
2:50 PM 39.2 °F 35.0 °F 35.6 °F 87% 29.85 in 10.0 mi West 5.8 mph - 0.02 in   Overcast
3:10 PM 39.2 °F 34.2 °F 35.6 °F 87% 29.85 in 10.0 mi WSW 6.9 mph - N/A   Overcast
3:30 PM 41.0 °F 36.4 °F 37.4 °F 87% 29.85 in 10.0 mi SW 6.9 mph - N/A Rain Light Rain
3:50 PM 42.8 °F 38.0 °F 39.2 °F 87% 29.87 in 10.0 mi SW 8.1 mph - N/A   Mostly Cloudy
4:10 PM 42.8 °F 38.6 °F 39.2 °F 87% 29.87 in 10.0 mi SW 6.9 mph - N/A   Mostly Cloudy
4:30 PM 41.0 °F 36.4 °F 37.4 °F 87% 29.87 in 4.0 mi SW 6.9 mph - 0.01 in Rain Light Rain
4:50 PM 41.0 °F 33.5 °F 37.4 °F 87% 29.89 in 2.0 mi WSW 13.8 mph 18.4 mph 0.06 in Rain Rain
5:10 PM 41.0 °F 36.4 °F 35.6 °F 81% 29.89 in 5.0 mi West 6.9 mph - 0.01 in Rain Light Rain
5:30 PM 41.0 °F 37.1 °F 37.4 °F 87% 29.89 in 10.0 mi WSW 5.8 mph - 0.01 in   Mostly Cloudy
5:50 PM 41.0 °F 37.1 °F 37.4 °F 87% 29.90 in 10.0 mi WSW 5.8 mph - 0.01 in   Mostly Cloudy
6:10 PM 41.0 °F 39.0 °F 37.4 °F 87% 29.90 in 10.0 mi SW 3.5 mph - N/A   Overcast
6:30 PM 41.0 °F 38.0 °F 37.4 °F 87% 29.90 in 8.0 mi SW 4.6 mph - N/A Rain Light Rain
6:50 PM 41.0 °F 35.2 °F 37.4 °F 87% 29.91 in 10.0 mi SW 9.2 mph - N/A   Overcast
7:10 PM 41.0 °F 35.8 °F 37.4 °F 87% 29.91 in 10.0 mi SW 8.1 mph - N/A Rain Light Rain
7:30 PM 41.0 °F 38.0 °F 37.4 °F 87% 29.93 in 10.0 mi West 4.6 mph - N/A   Mostly Cloudy
7:50 PM 39.2 °F 37.0 °F 35.6 °F 87% 29.94 in 10.0 mi West 3.5 mph - N/A   Scattered Clouds
8:10 PM 37.4 °F 34.9 °F 33.8 °F 87% 29.95 in 10.0 mi West 3.5 mph - N/A   Partly Cloudy
8:30 PM 37.4 °F 32.8 °F 32.0 °F 81% 29.97 in 10.0 mi West 5.8 mph - N/A   Clear
8:50 PM 37.4 °F - 32.0 °F 81% 29.98 in 10.0 mi Calm Calm - N/A   Clear
9:10 PM 32.0 °F 28.7 °F 28.4 °F 87% 29.99 in 10.0 mi SSW 3.5 mph - N/A   Partly Cloudy
9:30 PM 32.0 °F 27.5 °F 28.4 °F 87% 30.00 in 10.0 mi SSW 4.6 mph - N/A   Mostly Cloudy
9:50 PM 32.0 °F 26.4 °F 28.4 °F 87% 30.01 in 10.0 mi South 5.8 mph - N/A   Scattered Clouds
10:10 PM 33.8 °F 29.6 °F 30.2 °F 87% 30.02 in 10.0 mi South 4.6 mph - N/A   Clear
10:30 PM 33.8 °F 27.7 °F 30.2 °F 87% 30.03 in 10.0 mi SSW 6.9 mph - N/A   Clear
10:50 PM 32.0 °F 25.6 °F 28.4 °F 87% 30.03 in 10.0 mi SW 6.9 mph - N/A   Clear
11:10 PM 33.8 °F 27.0 °F 30.2 °F 87% 30.03 in 10.0 mi SSW 8.1 mph - N/A   Clear
11:30 PM 33.8 °F 27.7 °F 30.2 °F 87% 30.03 in 10.0 mi SSW 6.9 mph - N/A   Clear
11:50 PM 37.4 °F 28.9 °F 32.0 °F 81% 30.03 in 10.0 mi SSW 13.8 mph - N/A   Clear