Weather History for West Yellowstone, MT

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Wednesday, December 19, 2012

  Actual Average Record
Temperature  
Mean Temperature -10 °F -  
Max Temperature 10 °F 22 °F 32 °F (2011)
Min Temperature -29 °F 0 °F -29 °F (2012)
Degree Days  
Heating Degree Days 74    
Moisture  
Dew Point -    
Average Humidity    
Maximum Humidity    
Minimum Humidity    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 2 mph (SW)    
Max Wind Speed 14 mph    
Max Gust Speed 20 mph    
Visibility 8 miles    
Events Fog , Snow    
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

Dec. 19, 2012 Rise Set
Actual Time 7:57 AM MST 4:46 PM MST
Civil Twilight 7:24 AM MST 5:19 PM MST
Nautical Twilight 6:47 AM MST 5:56 PM MST
Astronomical Twilight 6:11 AM MST 6:32 PM MST
Moon 11:52 AM MST (12/19) No Moon Set
Length of Visible Light 9h 55m
Length of Day
8h 48m
Waxing Crescent, 45% of the Moon is Illuminated
Dec 19
Waxing Crescent
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

Hourly Weather History & Observations

Time (MST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:05 AM -18.4 °F - - N/A% 29.79 in 10.0 mi Calm Calm - N/A   Clear
12:25 AM -18.4 °F - - N/A% 29.80 in 10.0 mi Calm Calm - N/A   Clear
12:45 AM -20.2 °F -30.9 °F - N/A% 29.80 in 10.0 mi SSW 3.5 mph - N/A   Clear
1:05 AM -22.0 °F - - N/A% 29.80 in 10.0 mi Calm Calm - N/A   Clear
1:25 AM -22.0 °F - - N/A% 29.81 in 10.0 mi Calm Calm - N/A   Clear
1:45 AM -22.0 °F - - N/A% 29.81 in 10.0 mi Calm Calm - N/A   Clear
2:05 AM -23.8 °F - - N/A% 29.82 in 10.0 mi Calm Calm - N/A   Clear
2:25 AM -25.6 °F -37.1 °F - N/A% 29.82 in 10.0 mi South 3.5 mph - N/A   Mostly Cloudy
2:45 AM -25.6 °F - - N/A% 29.83 in 10.0 mi Calm Calm - N/A   Overcast
3:05 AM -25.6 °F - - N/A% 29.82 in 10.0 mi Calm Calm - N/A   Scattered Clouds
3:25 AM -25.6 °F - - N/A% 29.83 in 10.0 mi Calm Calm - N/A   Scattered Clouds
3:45 AM -27.4 °F - - N/A% 29.84 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:05 AM -27.4 °F - - N/A% 29.84 in 10.0 mi Calm Calm - N/A   Overcast
4:25 AM -27.4 °F - - N/A% 29.85 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:45 AM -27.4 °F - - N/A% 29.85 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:05 AM -27.4 °F - - N/A% 29.86 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:25 AM -29.2 °F -46.2 °F - N/A% 29.87 in 10.0 mi SW 5.8 mph - N/A   Mostly Cloudy
5:45 AM -29.2 °F -41.2 °F - N/A% 29.88 in 10.0 mi West 3.5 mph - N/A   Overcast
6:05 AM -27.4 °F -39.2 °F - N/A% 29.89 in 10.0 mi SSW 3.5 mph - N/A   Overcast
6:25 AM -25.6 °F - - N/A% 29.91 in 1.2 mi Calm Calm - N/A   Overcast
6:45 AM -23.8 °F - - N/A% 29.92 in 1.0 mi Calm Calm - N/A   Overcast
7:05 AM -22.0 °F - - N/A% 29.93 in 0.8 mi Calm Calm - N/A   Overcast
7:25 AM -20.2 °F - - N/A% 29.94 in 0.5 mi Calm Calm - N/A Fog Light Freezing Fog
7:45 AM -18.4 °F - - N/A% 29.94 in 0.2 mi Calm Calm - N/A Fog Light Freezing Fog
8:05 AM -16.6 °F - - N/A% 29.95 in 0.2 mi Calm Calm - N/A Fog Light Freezing Fog
8:25 AM -14.8 °F - - N/A% 29.97 in 2.5 mi Calm Calm - N/A   Overcast
8:45 AM -13.0 °F - - N/A% 29.97 in 0.2 mi Calm Calm - N/A Fog Light Freezing Fog
9:05 AM -13.0 °F - - N/A% 29.98 in 3.0 mi Calm Calm - N/A   Overcast
9:25 AM -11.2 °F - - N/A% 29.99 in 0.5 mi Calm Calm - N/A Fog Light Freezing Fog
9:45 AM -7.6 °F - - N/A% 30.00 in 0.8 mi Calm Calm - N/A   Overcast
10:05 AM -7.6 °F - - N/A% 30.01 in 1.0 mi Calm Calm - N/A   Overcast
10:25 AM -5.8 °F - - N/A% 30.01 in 8.0 mi Calm Calm - N/A   Overcast
10:45 AM -5.8 °F - - N/A% 30.02 in 8.0 mi Calm Calm - N/A   Overcast
11:05 AM -4.0 °F - - N/A% 30.02 in 7.0 mi Calm Calm - N/A   Overcast
11:25 AM -2.2 °F - - N/A% 30.02 in 10.0 mi Calm Calm - N/A   Overcast
11:45 AM -2.2 °F - - N/A% 30.02 in 8.0 mi Calm Calm - N/A   Overcast
12:05 PM -0.4 °F - - N/A% 30.02 in 8.0 mi Calm Calm - N/A   Overcast
12:25 PM -0.4 °F - - N/A% 30.02 in 10.0 mi Calm Calm - N/A   Overcast
12:45 PM 1.4 °F - - N/A% 30.01 in 10.0 mi Calm Calm - N/A   Overcast
1:05 PM 3.2 °F - - N/A% 30.02 in 7.0 mi Calm Calm - N/A Snow Light Snow
1:25 PM 6.8 °F -5.9 °F - N/A% 30.02 in 5.0 mi SW 8.1 mph - N/A   Haze
1:45 PM 6.8 °F -8.6 °F - N/A% 30.02 in 8.0 mi SW 11.5 mph 16.1 mph N/A   Overcast
2:05 PM 6.8 °F -5.9 °F - N/A% 30.03 in 7.0 mi SW 8.1 mph - N/A Snow Light Snow
2:25 PM 6.8 °F -9.3 °F - N/A% 30.03 in 10.0 mi SSW 12.7 mph 19.6 mph N/A   Overcast
2:45 PM 6.8 °F -7.8 °F - N/A% 30.03 in 10.0 mi SW 10.4 mph - N/A   Overcast
3:05 PM 6.8 °F -7.8 °F - N/A% 30.04 in 9.0 mi SW 10.4 mph 17.3 mph N/A   Overcast
3:25 PM 6.8 °F -10.0 °F - N/A% 30.05 in 8.0 mi SW 13.8 mph 17.3 mph N/A   Overcast
3:45 PM 6.8 °F -3.5 °F - N/A% 30.06 in 9.0 mi SW 5.8 mph - N/A   Overcast
4:05 PM 8.6 °F -1.3 °F - N/A% 30.06 in 7.0 mi SW 5.8 mph - N/A   Overcast
4:25 PM 6.8 °F -8.6 °F - N/A% 30.07 in 8.0 mi SSW 11.5 mph 18.4 mph N/A   Overcast
4:45 PM 6.8 °F -4.8 °F - N/A% 30.08 in 8.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
5:05 PM 6.8 °F -8.6 °F - N/A% 30.09 in 10.0 mi SSW 11.5 mph 16.1 mph N/A   Mostly Cloudy
5:25 PM 6.8 °F -2.0 °F - N/A% 30.10 in 10.0 mi SW 4.6 mph - N/A   Mostly Cloudy
5:45 PM 6.8 °F -2.0 °F - N/A% 30.12 in 10.0 mi WSW 4.6 mph - N/A   Mostly Cloudy
6:05 PM 6.8 °F -5.9 °F - N/A% 30.12 in 10.0 mi SW 8.1 mph - N/A   Scattered Clouds
6:25 PM 6.8 °F -5.9 °F - N/A% 30.12 in 10.0 mi SW 8.1 mph - N/A Snow Light Snow
6:45 PM 6.8 °F -3.5 °F - N/A% 30.13 in 9.0 mi SSW 5.8 mph - N/A   Overcast
7:05 PM 8.6 °F -1.3 °F - N/A% 30.14 in 10.0 mi SW 5.8 mph - N/A   Overcast
7:25 PM 8.6 °F 0.1 °F - N/A% 30.15 in 8.0 mi SSW 4.6 mph - N/A Snow Light Snow
7:45 PM 8.6 °F 2.0 °F - N/A% 30.15 in 9.0 mi SSW 3.5 mph - N/A   Overcast
8:05 PM 8.6 °F 2.0 °F - N/A% 30.16 in 8.0 mi SW 3.5 mph - N/A Snow Light Snow
8:25 PM 8.6 °F -1.3 °F - N/A% 30.17 in 6.0 mi South 5.8 mph - N/A Snow Light Snow
8:45 PM 8.6 °F -1.3 °F - N/A% 30.18 in 8.0 mi SSW 5.8 mph - N/A   Overcast
9:05 PM 8.6 °F -3.7 °F - N/A% 30.18 in 10.0 mi South 8.1 mph - N/A   Overcast
9:25 PM 8.6 °F -2.6 °F - N/A% 30.18 in 10.0 mi SSW 6.9 mph - N/A   Overcast
9:45 PM 10.4 °F -0.4 °F - N/A% 30.19 in 10.0 mi SSW 6.9 mph - N/A   Overcast
10:05 PM 10.4 °F -2.4 °F - N/A% 30.18 in 10.0 mi SW 9.2 mph - N/A   Overcast
10:25 PM 10.4 °F -3.3 °F - N/A% 30.19 in 10.0 mi SW 10.4 mph 18.4 mph N/A   Overcast
10:45 PM 10.4 °F -5.4 °F - N/A% 30.19 in 9.0 mi SSW 13.8 mph 19.6 mph N/A   Overcast
11:05 PM 10.4 °F -3.3 °F - N/A% 30.20 in 9.0 mi SW 10.4 mph 16.1 mph N/A Snow Light Snow
11:45 PM 10.4 °F -3.3 °F - N/A% 30.21 in 10.0 mi SW 10.4 mph - N/A   Overcast