Weather History for West Yellowstone, MT

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Tuesday, December 18, 2012

  Actual Average Record
Temperature  
Mean Temperature 0 °F -  
Max Temperature 15 °F 23 °F 23 °F (2011)
Min Temperature -16 °F 1 °F -16 °F (2012)
Degree Days  
Heating Degree Days 66    
Moisture  
Dew Point -    
Average Humidity    
Maximum Humidity    
Minimum Humidity    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.70 in    
Wind  
Wind Speed 9 mph (SW)    
Max Wind Speed 14 mph    
Max Gust Speed 18 mph    
Visibility 10 miles    
Events      
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. 18, 2012 Rise Set
Actual Time 7:57 AM MST 4:45 PM MST
Civil Twilight 7:23 AM MST 5:19 PM MST
Nautical Twilight 6:46 AM MST 5:56 PM MST
Astronomical Twilight 6:10 AM MST 6:31 PM MST
Moon 11:25 AM MST (12/18) 11:30 PM MST (12/18)
Length of Visible Light 9h 55m
Length of Day
8h 48m
Waxing Crescent, 35% of the Moon is Illuminated
Dec 18
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 14.0 °F -0.2 °F - N/A% 29.62 in 10.0 mi SSW 12.7 mph - N/A   Mostly Cloudy
12:25 AM 14.0 °F 1.2 °F - N/A% 29.62 in 10.0 mi SSW 10.4 mph - N/A   Mostly Cloudy
12:45 AM 14.0 °F 0.5 °F - N/A% 29.63 in 10.0 mi SSW 11.5 mph - N/A   Overcast
1:05 AM 12.2 °F -1.8 °F - N/A% 29.63 in 10.0 mi SSW 11.5 mph - N/A   Overcast
1:25 AM 14.0 °F -0.8 °F - N/A% 29.63 in 10.0 mi SSW 13.8 mph - N/A   Overcast
1:45 AM 14.0 °F 0.5 °F - N/A% 29.64 in 10.0 mi SSW 11.5 mph - N/A   Mostly Cloudy
2:05 AM 14.0 °F -0.2 °F - N/A% 29.64 in 10.0 mi SSW 12.7 mph - N/A   Overcast
2:25 AM 14.0 °F 1.2 °F - N/A% 29.64 in 10.0 mi SSW 10.4 mph - N/A   Overcast
2:45 AM 12.2 °F 1.7 °F - N/A% 29.65 in 10.0 mi SW 6.9 mph - N/A   Mostly Cloudy
3:05 AM 14.0 °F 8.2 °F - N/A% 29.65 in 10.0 mi SW 3.5 mph - N/A   Overcast
3:25 AM 12.2 °F 2.9 °F - N/A% 29.65 in 10.0 mi WSW 5.8 mph - N/A   Overcast
3:45 AM 12.2 °F 6.1 °F - N/A% 29.65 in 10.0 mi SW 3.5 mph - N/A   Overcast
4:05 AM 8.6 °F -2.6 °F - N/A% 29.66 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
4:25 AM 10.4 °F 2.2 °F - N/A% 29.66 in 10.0 mi SW 4.6 mph - N/A   Overcast
4:45 AM 10.4 °F - - N/A% 29.67 in 10.0 mi Calm Calm - N/A   Overcast
5:25 AM 10.4 °F -2.4 °F - N/A% 29.67 in 10.0 mi SSW 9.2 mph - N/A   Overcast
5:45 AM 10.4 °F -3.3 °F - N/A% 29.67 in 10.0 mi SSW 10.4 mph - N/A   Overcast
6:05 AM 10.4 °F -2.4 °F - N/A% 29.67 in 10.0 mi SSW 9.2 mph - N/A   Overcast
6:25 AM 8.6 °F -4.7 °F - N/A% 29.68 in 10.0 mi SSW 9.2 mph - N/A   Overcast
6:45 AM 8.6 °F -6.3 °F - N/A% 29.68 in 10.0 mi SSW 11.5 mph - N/A   Scattered Clouds
7:05 AM 8.6 °F -4.7 °F - N/A% 29.69 in 10.0 mi SSW 9.2 mph 16.1 mph N/A   Scattered Clouds
7:25 AM 8.6 °F -6.3 °F - N/A% 29.69 in 10.0 mi SSW 11.5 mph - N/A   Partly Cloudy
7:45 AM 8.6 °F -3.7 °F - N/A% 29.69 in 10.0 mi SW 8.1 mph - N/A   Clear
8:05 AM 8.6 °F 2.0 °F - N/A% 29.70 in 10.0 mi SSW 3.5 mph - N/A   Partly Cloudy
8:25 AM 5.0 °F -5.6 °F - N/A% 29.71 in 10.0 mi NE 5.8 mph - N/A   Partly Cloudy
8:45 AM 8.6 °F - - N/A% 29.71 in 10.0 mi Calm Calm - N/A   Clear
9:05 AM 5.0 °F - - N/A% 29.71 in 10.0 mi Calm Calm - N/A   Clear
9:25 AM 10.4 °F - - N/A% 29.72 in 10.0 mi Calm Calm - N/A   Clear
9:45 AM 10.4 °F -1.5 °F - N/A% 29.72 in 10.0 mi SSW 8.1 mph - N/A   Clear
10:05 AM 10.4 °F -4.1 °F - N/A% 29.72 in 10.0 mi SW 11.5 mph - N/A   Clear
10:25 AM 12.2 °F -1.8 °F - N/A% 29.72 in 10.0 mi SSW 11.5 mph - N/A   Clear
10:45 AM 14.0 °F 2.0 °F - N/A% 29.72 in 10.0 mi SW 9.2 mph - N/A   Clear
11:05 AM 14.0 °F -0.2 °F - N/A% 29.71 in 10.0 mi SSW 12.7 mph - N/A   Clear
11:25 AM 15.8 °F 4.2 °F - N/A% 29.71 in 10.0 mi SW 9.2 mph - N/A   Clear
11:45 AM 15.8 °F 2.7 °F - N/A% 29.71 in 10.0 mi SW 11.5 mph - N/A   Clear
12:05 PM 15.8 °F 2.7 °F - N/A% 29.70 in 10.0 mi SW 11.5 mph - N/A   Clear
12:25 PM 15.8 °F 2.7 °F - N/A% 29.70 in 10.0 mi SW 11.5 mph 18.4 mph N/A   Clear
12:45 PM 15.8 °F 2.7 °F - N/A% 29.69 in 10.0 mi SW 11.5 mph - N/A   Clear
1:05 PM 15.8 °F 2.7 °F - N/A% 29.69 in 10.0 mi SW 11.5 mph - N/A   Clear
1:25 PM 15.8 °F 2.1 °F - N/A% 29.69 in 10.0 mi SW 12.7 mph 16.1 mph N/A   Clear
1:45 PM 15.8 °F 2.7 °F - N/A% 29.69 in 10.0 mi SW 11.5 mph 18.4 mph N/A   Clear
2:05 PM 15.8 °F 2.1 °F - N/A% 29.69 in 10.0 mi SW 12.7 mph 18.4 mph N/A   Partly Cloudy
2:25 PM 15.8 °F 3.4 °F - N/A% 29.69 in 10.0 mi SW 10.4 mph 18.4 mph N/A   Mostly Cloudy
2:45 PM 15.8 °F 2.1 °F - N/A% 29.69 in 10.0 mi SW 12.7 mph 16.1 mph N/A   Mostly Cloudy
3:05 PM 15.8 °F 5.1 °F - N/A% 29.68 in 10.0 mi SW 8.1 mph - N/A   Partly Cloudy
3:25 PM 14.0 °F 0.5 °F - N/A% 29.69 in 10.0 mi SSW 11.5 mph - N/A   Clear
3:45 PM 14.0 °F 1.2 °F - N/A% 29.69 in 10.0 mi SSW 10.4 mph - N/A   Clear
4:05 PM 14.0 °F 2.9 °F - N/A% 29.69 in 10.0 mi SW 8.1 mph - N/A   Scattered Clouds
4:25 PM 12.2 °F 4.3 °F - N/A% 29.70 in 10.0 mi SW 4.6 mph - N/A   Mostly Cloudy
4:45 PM 10.4 °F 0.8 °F - N/A% 29.70 in 10.0 mi WSW 5.8 mph - N/A   Partly Cloudy
5:05 PM 10.4 °F 0.8 °F - N/A% 29.71 in 10.0 mi SSW 5.8 mph - N/A   Mostly Cloudy
5:25 PM 8.6 °F -1.3 °F - N/A% 29.71 in 10.0 mi SSW 5.8 mph - N/A   Overcast
5:45 PM 8.6 °F -2.6 °F - N/A% 29.72 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
6:05 PM 6.8 °F -5.9 °F - N/A% 29.72 in 10.0 mi SSW 8.1 mph - N/A   Overcast
6:25 PM 6.8 °F -6.9 °F - N/A% 29.73 in 10.0 mi SSW 9.2 mph - N/A   Mostly Cloudy
6:45 PM 6.8 °F -4.8 °F - N/A% 29.73 in 10.0 mi SW 6.9 mph - N/A   Mostly Cloudy
7:05 PM 6.8 °F -5.9 °F - N/A% 29.73 in 10.0 mi SW 8.1 mph - N/A   Mostly Cloudy
7:25 PM 6.8 °F -7.8 °F - N/A% 29.72 in 10.0 mi SW 10.4 mph - N/A   Scattered Clouds
7:45 PM 5.0 °F -6.9 °F - N/A% 29.73 in 10.0 mi SSW 6.9 mph - N/A   Partly Cloudy
8:05 PM 1.4 °F - - N/A% 29.74 in 10.0 mi Calm Calm - N/A   Clear
8:25 PM -0.4 °F -8.3 °F - N/A% 29.75 in 10.0 mi NNE 3.5 mph - N/A   Clear
8:45 PM -2.2 °F -10.4 °F - N/A% 29.76 in 10.0 mi SSW 3.5 mph - N/A   Clear
9:05 PM -4.0 °F -14.6 °F - N/A% 29.76 in 10.0 mi WSW 4.6 mph - N/A   Clear
9:25 PM -4.0 °F -14.6 °F - N/A% 29.76 in 10.0 mi NNW 4.6 mph - N/A   Clear
9:45 PM -7.6 °F - - N/A% 29.76 in 10.0 mi Calm Calm - N/A   Clear
10:05 PM -9.4 °F - - N/A% 29.77 in 10.0 mi Calm Calm - N/A   Clear
10:25 PM -9.4 °F - - N/A% 29.77 in 10.0 mi Calm Calm - N/A   Clear
10:45 PM -11.2 °F -23.0 °F - N/A% 29.78 in 10.0 mi South 4.6 mph - N/A   Clear
11:05 PM -16.6 °F - - N/A% 29.78 in 10.0 mi Calm Calm - N/A   Clear
11:25 PM -16.6 °F -26.8 °F - N/A% 29.79 in 10.0 mi South 3.5 mph - N/A   Clear
11:45 PM -16.6 °F - - N/A% 29.80 in 10.0 mi Calm Calm - N/A   Clear