Weather History for West Yellowstone, MT

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Friday, September 13, 2013

  Actual Average Record
Temperature  
Mean Temperature 55 °F -  
Max Temperature 71 °F 63 °F 71 °F (2010)
Min Temperature 39 °F 29 °F 17 °F (2012)
Degree Days  
Heating Degree Days 10    
Growing Degree Days 5 (Base 50)    
Moisture  
Dew Point 47 °F    
Average Humidity 84    
Maximum Humidity 88    
Minimum Humidity 81    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.13 in    
Wind  
Wind Speed 2 mph (WSW)    
Max Wind Speed 12 mph    
Max Gust Speed 18 mph    
Visibility 8 miles    
Events Fog    
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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Astronomy

Sep. 13, 2013 Rise Set
Actual Time 7:01 AM MDT 7:38 PM MDT
Civil Twilight 6:31 AM MDT 8:07 PM MDT
Nautical Twilight 5:57 AM MDT 8:42 PM MDT
Astronomical Twilight 5:20 AM MDT 9:18 PM MDT
Moon 3:41 PM MDT (9/13) 12:23 AM MDT (9/13)
Length of Visible Light 13h 35m
Length of Day
12h 37m
Waxing Gibbous, 62% of the Moon is Illuminated
Sep 13
Waxing Gibbous
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First 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 41.0 °F - 37.4 °F 87% 30.25 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:30 AM 41.0 °F - 37.4 °F 87% 30.24 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:50 AM 41.0 °F - 37.4 °F 87% 30.24 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:10 AM 39.2 °F - 35.6 °F 87% 30.23 in 10.0 mi Calm Calm - N/A   Clear
1:30 AM 39.2 °F - 35.6 °F 87% 30.23 in 10.0 mi Calm Calm - N/A   Clear
1:50 AM 39.2 °F - 35.6 °F 87% 30.24 in 10.0 mi Calm Calm - N/A   Clear
2:10 AM 39.2 °F - 35.6 °F 87% 30.24 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:30 AM 41.0 °F - 35.6 °F 81% 30.23 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:50 AM 41.0 °F - 35.6 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:10 AM 41.0 °F - 35.6 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:30 AM 41.0 °F - 37.4 °F 87% 30.22 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:50 AM 41.0 °F - 37.4 °F 87% 30.22 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:10 AM 41.0 °F 39.0 °F 35.6 °F 81% 30.22 in 10.0 mi SW 3.5 mph - N/A   Overcast
4:30 AM 39.2 °F - 35.6 °F 87% 30.21 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:50 AM 39.2 °F - 35.6 °F 87% 30.21 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:10 AM 39.2 °F 37.0 °F 35.6 °F 87% 30.21 in 0.8 mi ESE 3.5 mph - N/A   Haze
5:30 AM 39.2 °F - 35.6 °F 87% 30.20 in 0.5 mi Calm Calm - N/A   Haze
5:50 AM 39.2 °F - 35.6 °F 87% 30.21 in 0.2 mi Calm Calm - N/A Fog Fog
6:10 AM 39.2 °F - 33.8 °F 81% 30.20 in 0.2 mi Calm Calm - N/A   Haze
6:30 AM 39.2 °F - 35.6 °F 87% 30.20 in 0.5 mi Calm Calm - N/A Fog Fog
6:50 AM 39.2 °F - 35.6 °F 87% 30.20 in 0.5 mi Calm Calm - N/A Fog Fog
7:10 AM 39.2 °F - 33.8 °F 81% 30.19 in 0.2 mi Calm Calm - N/A   Haze
7:30 AM 39.2 °F - 35.6 °F 87% 30.19 in 0.2 mi Calm Calm - N/A   Haze
7:50 AM 41.0 °F - 35.6 °F 81% 30.19 in 0.2 mi Calm Calm - N/A   Haze
8:10 AM 41.0 °F - 35.6 °F 81% 30.19 in 0.2 mi Calm Calm - N/A   Haze
8:30 AM 41.0 °F - 37.4 °F 87% 30.19 in 0.2 mi Calm Calm - N/A Fog Fog
8:50 AM 41.0 °F - 37.4 °F 87% 30.19 in 0.2 mi Calm Calm - N/A   Overcast
9:10 AM 42.8 °F - 37.4 °F 81% 30.19 in 0.2 mi Calm Calm - N/A   Haze
9:30 AM 42.8 °F - 37.4 °F 81% 30.19 in 0.2 mi Calm Calm - N/A   Haze
9:50 AM 44.6 °F - 39.2 °F 81% 30.19 in 0.2 mi Calm Calm - N/A   Haze
10:10 AM 44.6 °F - 39.2 °F 81% 30.18 in 0.2 mi Calm Calm - N/A Fog Fog
10:30 AM 44.6 °F - 39.2 °F 81% 30.18 in 0.2 mi Calm Calm - N/A   Haze
10:50 AM 44.6 °F - 41.0 °F 87% 30.18 in 0.5 mi Calm Calm - N/A Fog Fog
11:10 AM 46.4 °F - 41.0 °F 81% 30.17 in 2.0 mi Calm Calm - N/A   Overcast
11:30 AM 48.2 °F - 42.8 °F 82% 30.16 in 10.0 mi Calm Calm - N/A   Overcast
11:50 AM 50.0 °F - 44.6 °F 82% 30.15 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:10 PM 53.6 °F - 48.2 °F 82% 30.13 in 10.0 mi Calm Calm - N/A   Clear
12:30 PM 57.2 °F - 53.6 °F 88% 30.12 in 10.0 mi ENE 4.6 mph - N/A   Clear
12:50 PM 60.8 °F - 55.4 °F 82% 30.11 in 10.0 mi East 3.5 mph - N/A   Clear
1:10 PM 64.4 °F - 59.0 °F 83% 30.10 in 10.0 mi NNE 3.5 mph - N/A   Clear
1:30 PM 64.4 °F - 59.0 °F 83% 30.09 in 10.0 mi NE 4.6 mph - N/A   Clear
1:50 PM 64.4 °F - 59.0 °F 83% 30.08 in 10.0 mi Calm Calm - N/A   Clear
2:10 PM 66.2 °F - 62.6 °F 88% 30.07 in 10.0 mi ENE 4.6 mph - N/A   Clear
2:30 PM 68.0 °F - 64.4 °F 88% 30.06 in 10.0 mi SE 4.6 mph - N/A   Clear
2:50 PM 68.0 °F - 64.4 °F 88% 30.05 in 10.0 mi SSE 3.5 mph - N/A   Clear
3:10 PM 68.0 °F - 64.4 °F 88% 30.04 in 10.0 mi ESE 3.5 mph - N/A   Clear
3:30 PM 69.8 °F - 64.4 °F 83% 30.03 in 10.0 mi East 3.5 mph - N/A   Partly Cloudy
3:50 PM 71.6 °F - 66.2 °F 83% 30.03 in 10.0 mi WSW 5.8 mph - N/A   Partly Cloudy
4:10 PM 68.0 °F - 64.4 °F 88% 30.02 in 10.0 mi West 6.9 mph - N/A   Clear
4:30 PM 69.8 °F - 64.4 °F 83% 30.02 in 10.0 mi SSW 10.4 mph 16.1 mph N/A   Clear
4:50 PM 71.6 °F - 66.2 °F 83% 30.01 in 10.0 mi SW 6.9 mph - N/A   Clear
5:10 PM 71.6 °F - 66.2 °F 83% 30.01 in 10.0 mi SW 5.8 mph - N/A   Clear
5:30 PM 68.0 °F - 64.4 °F 88% 30.01 in 10.0 mi West 8.1 mph - N/A   Partly Cloudy
5:50 PM 68.0 °F - 62.6 °F 83% 30.01 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
6:10 PM 66.2 °F - 60.8 °F 83% 30.02 in 10.0 mi NW 5.8 mph - N/A   Clear
6:30 PM 64.4 °F - 59.0 °F 83% 30.03 in 10.0 mi NW 9.2 mph - N/A   Mostly Cloudy
6:50 PM 64.4 °F - 59.0 °F 83% 30.03 in 10.0 mi NNW 9.2 mph - N/A   Mostly Cloudy
7:10 PM 62.6 °F - 57.2 °F 82% 30.03 in 10.0 mi NNW 11.5 mph 18.4 mph N/A   Mostly Cloudy
7:30 PM 60.8 °F - 57.2 °F 88% 30.02 in 10.0 mi NW 6.9 mph - N/A   Partly Cloudy
7:50 PM 59.0 °F - 55.4 °F 88% 30.03 in 10.0 mi NNW 5.8 mph - N/A   Clear
8:10 PM 59.0 °F - 55.4 °F 88% 30.03 in 10.0 mi Calm Calm - N/A   Clear
8:30 PM 57.2 °F - 51.8 °F 82% 30.04 in 10.0 mi Calm Calm - N/A   Clear
8:50 PM 53.6 °F - 48.2 °F 82% 30.04 in 10.0 mi WSW 3.5 mph - N/A   Clear
9:10 PM 51.8 °F - 46.4 °F 82% 30.05 in 10.0 mi SSW 3.5 mph - N/A   Clear
9:30 PM 51.8 °F - 48.2 °F 88% 30.05 in 10.0 mi SSW 3.5 mph - N/A   Scattered Clouds
9:50 PM 51.8 °F - 46.4 °F 82% 30.05 in 10.0 mi SSW 5.8 mph - N/A   Overcast
10:10 PM 51.8 °F - 46.4 °F 82% 30.06 in 10.0 mi SSW 8.1 mph - N/A   Overcast
10:30 PM 53.6 °F - 48.2 °F 82% 30.06 in 10.0 mi West 3.5 mph - N/A   Mostly Cloudy
10:50 PM 51.8 °F - 46.4 °F 82% 30.07 in 10.0 mi NNE 5.8 mph - N/A   Scattered Clouds
11:10 PM 53.6 °F - 48.2 °F 82% 30.07 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:30 PM 51.8 °F - 46.4 °F 82% 30.07 in 10.0 mi South 6.9 mph - N/A   Partly Cloudy
11:50 PM 53.6 °F - 48.2 °F 82% 30.06 in 10.0 mi South 6.9 mph - N/A   Partly Cloudy