Weather History for West Yellowstone, MT

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Sunday, September 15, 2013

  Actual Average Record
Temperature  
Mean Temperature 55 °F -  
Max Temperature 66 °F 63 °F 75 °F (2012)
Min Temperature 44 °F 28 °F 26 °F (2012)
Degree Days  
Heating Degree Days 10    
Growing Degree Days 5 (Base 50)    
Moisture  
Dew Point 49 °F    
Average Humidity 84    
Maximum Humidity 88    
Minimum Humidity 81    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.21 in    
Wind  
Wind Speed 1 mph (South)    
Max Wind Speed 13 mph    
Max Gust Speed 26 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. 15, 2013 Rise Set
Actual Time 7:03 AM MDT 7:34 PM MDT
Civil Twilight 6:34 AM MDT 8:03 PM MDT
Nautical Twilight 5:59 AM MDT 8:38 PM MDT
Astronomical Twilight 5:23 AM MDT 9:14 PM MDT
Moon 5:11 PM MDT (9/15) 2:37 AM MDT (9/15)
Length of Visible Light 13h 29m
Length of Day
12h 30m
Waxing Gibbous, 82% of the Moon is Illuminated
Sep 15
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 50.0 °F - 46.4 °F 87% 30.20 in 10.0 mi Calm Calm - N/A   Overcast
12:30 AM 50.0 °F - 46.4 °F 87% 30.20 in 10.0 mi Calm Calm - N/A   Overcast
12:50 AM 50.0 °F - 46.4 °F 87% 30.20 in 10.0 mi Calm Calm - N/A   Overcast
1:10 AM 50.0 °F - 44.6 °F 82% 30.21 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:30 AM 48.2 °F - 44.6 °F 87% 30.21 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:50 AM 48.2 °F - 42.8 °F 82% 30.21 in 10.0 mi West 3.5 mph - N/A   Mostly Cloudy
2:10 AM 48.2 °F - 42.8 °F 82% 30.21 in 10.0 mi Calm Calm - N/A   Overcast
2:30 AM 48.2 °F - 42.8 °F 82% 30.21 in 10.0 mi Calm Calm - N/A   Overcast
2:50 AM 48.2 °F - 42.8 °F 82% 30.21 in 10.0 mi Calm Calm - N/A   Overcast
3:10 AM 46.4 °F - 42.8 °F 87% 30.21 in 10.0 mi Calm Calm - N/A   Overcast
3:30 AM 46.4 °F - 41.0 °F 81% 30.21 in 10.0 mi Calm Calm - N/A   Overcast
3:50 AM 46.4 °F 44.3 °F 41.0 °F 81% 30.21 in 10.0 mi SW 4.6 mph - N/A   Overcast
4:10 AM 46.4 °F - 41.0 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
4:30 AM 46.4 °F - 41.0 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:50 AM 46.4 °F - 41.0 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
5:10 AM 46.4 °F - 41.0 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
5:30 AM 46.4 °F - 41.0 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
5:50 AM 46.4 °F - 41.0 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
6:10 AM 46.4 °F - 41.0 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
6:30 AM 46.4 °F - 41.0 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
6:50 AM 46.4 °F - 41.0 °F 81% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
7:10 AM 46.4 °F - 41.0 °F 81% 30.23 in 10.0 mi Calm Calm - N/A   Overcast
7:30 AM 46.4 °F - 41.0 °F 81% 30.23 in 10.0 mi Calm Calm - N/A   Overcast
7:50 AM 48.2 °F - 44.6 °F 87% 30.23 in 10.0 mi South 3.5 mph - N/A   Overcast
8:10 AM 48.2 °F - 44.6 °F 87% 30.24 in 10.0 mi Calm Calm - N/A   Overcast
8:30 AM 50.0 °F - 46.4 °F 87% 30.24 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:50 AM 50.0 °F - 46.4 °F 87% 30.23 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:10 AM 53.6 °F - 48.2 °F 82% 30.24 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:30 AM 55.4 °F - 50.0 °F 82% 30.24 in 10.0 mi Calm Calm - N/A   Overcast
9:50 AM 57.2 °F - 51.8 °F 82% 30.24 in 10.0 mi Calm Calm - N/A   Overcast
10:10 AM 59.0 °F - 53.6 °F 82% 30.24 in 10.0 mi East 9.2 mph - N/A   Overcast
10:30 AM 57.2 °F - 53.6 °F 88% 30.24 in 10.0 mi ENE 4.6 mph - N/A   Mostly Cloudy
10:50 AM 57.2 °F - 53.6 °F 88% 30.24 in 10.0 mi East 5.8 mph - N/A   Partly Cloudy
11:10 AM 59.0 °F - 55.4 °F 88% 30.24 in 10.0 mi East 5.8 mph - N/A   Scattered Clouds
11:30 AM 59.0 °F - 53.6 °F 82% 30.24 in 10.0 mi East 4.6 mph - N/A   Overcast
11:50 AM 59.0 °F - 53.6 °F 82% 30.24 in 10.0 mi South 5.8 mph - N/A   Overcast
12:10 PM 57.2 °F - 53.6 °F 88% 30.24 in 10.0 mi Calm Calm - N/A Rain Light Rain
12:30 PM 59.0 °F - 55.4 °F 88% 30.24 in 10.0 mi Calm Calm - N/A   Clear
12:50 PM 60.8 °F - 55.4 °F 82% 30.23 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:10 PM 60.8 °F - 55.4 °F 82% 30.23 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:30 PM 62.6 °F - 57.2 °F 82% 30.23 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:50 PM 64.4 °F - 59.0 °F 83% 30.22 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:10 PM 66.2 °F - 60.8 °F 83% 30.21 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
2:30 PM 66.2 °F - 62.6 °F 88% 30.20 in 10.0 mi WNW 4.6 mph - N/A   Scattered Clouds
2:50 PM 66.2 °F - 62.6 °F 88% 30.19 in 10.0 mi ENE 5.8 mph - N/A   Mostly Cloudy
3:10 PM 66.2 °F - 62.6 °F 88% 30.19 in 10.0 mi Calm Calm - N/A   Overcast
3:30 PM 66.2 °F - 60.8 °F 83% 30.18 in 10.0 mi Calm Calm - N/A   Overcast
3:50 PM 66.2 °F - 62.6 °F 88% 30.17 in 10.0 mi Calm Calm - N/A   Overcast
4:10 PM 66.2 °F - 62.6 °F 88% 30.17 in 10.0 mi WSW 4.6 mph - N/A   Overcast
4:30 PM 66.2 °F - 62.6 °F 88% 30.16 in 10.0 mi Calm Calm - N/A   Overcast
4:50 PM 66.2 °F - 62.6 °F 88% 30.16 in 10.0 mi SW 3.5 mph - N/A   Overcast
5:10 PM 60.8 °F - 57.2 °F 88% 30.17 in 10.0 mi SSE 12.7 mph 26.5 mph N/A   Mostly Cloudy
5:30 PM 59.0 °F - 55.4 °F 88% 30.17 in 10.0 mi ESE 4.6 mph - N/A   Mostly Cloudy
5:50 PM 60.8 °F - 55.4 °F 82% 30.18 in 10.0 mi SSE 4.6 mph - N/A   Mostly Cloudy
6:10 PM 60.8 °F - 57.2 °F 88% 30.19 in 10.0 mi SW 6.9 mph - N/A   Overcast
6:30 PM 59.0 °F - 55.4 °F 88% 30.19 in 10.0 mi West 3.5 mph - N/A   Scattered Clouds
6:50 PM 59.0 °F - 55.4 °F 88% 30.18 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy
7:10 PM 59.0 °F - 53.6 °F 82% 30.18 in 10.0 mi North 4.6 mph - N/A   Overcast
7:30 PM 57.2 °F - 51.8 °F 82% 30.18 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:50 PM 55.4 °F - 50.0 °F 82% 30.17 in 10.0 mi Calm Calm - N/A   Clear
8:10 PM 53.6 °F - 48.2 °F 82% 30.18 in 10.0 mi Calm Calm - N/A   Clear
8:30 PM 51.8 °F - 48.2 °F 88% 30.18 in 10.0 mi South 3.5 mph - N/A   Clear
8:50 PM 50.0 °F - 44.6 °F 82% 30.19 in 10.0 mi Calm Calm - N/A   Clear
9:10 PM 48.2 °F - 44.6 °F 87% 30.19 in 10.0 mi Calm Calm - N/A   Clear
9:30 PM 48.2 °F - 42.8 °F 82% 30.19 in 10.0 mi Calm Calm - N/A   Clear
9:50 PM 48.2 °F - 42.8 °F 82% 30.19 in 10.0 mi Calm Calm - N/A   Clear
10:10 PM 46.4 °F - 41.0 °F 81% 30.19 in 10.0 mi Calm Calm - N/A   Clear
10:30 PM 44.6 °F - 41.0 °F 87% 30.19 in 10.0 mi Calm Calm - N/A   Clear
10:50 PM 44.6 °F - 39.2 °F 81% 30.19 in 10.0 mi Calm Calm - N/A   Clear
11:10 PM 44.6 °F - 39.2 °F 81% 30.19 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:30 PM 44.6 °F - 39.2 °F 81% 30.19 in 10.0 mi Calm Calm - N/A   Overcast
11:50 PM 44.6 °F - 39.2 °F 81% 30.18 in 10.0 mi Calm Calm - N/A   Overcast