Weather History for West Yellowstone, MT

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Wednesday, August 15, 2012

  Actual Average Record
Temperature  
Mean Temperature 52 °F -  
Max Temperature 71 °F 74 °F 86 °F (2013)
Min Temperature 32 °F 39 °F 32 °F (2010)
Degree Days  
Heating Degree Days 14    
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 50 °F    
Average Humidity 85    
Maximum Humidity 88    
Minimum Humidity 81    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.16 in    
Wind  
Wind Speed 3 mph (NNE)    
Max Wind Speed 15 mph    
Max Gust Speed 21 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

Aug. 15, 2012 Rise Set
Actual Time 6:27 AM MDT 8:29 PM MDT
Civil Twilight 5:55 AM MDT 9:00 PM MDT
Nautical Twilight 5:16 AM MDT 9:39 PM MDT
Astronomical Twilight 4:33 AM MDT 10:22 PM MDT
Moon 4:25 AM MDT (8/15) 7:05 PM MDT (8/15)
Length of Visible Light 15h 05m
Length of Day
14h 01m
Waning Crescent, 4% of the Moon is Illuminated
Aug 15
Waning Crescent
Aug 17
New
Aug 24
First Quarter
Aug 31
Full
Sep 8
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 48.2 °F - 44.6 °F 87% 30.08 in 10.0 mi Calm Calm - N/A   Clear
12:30 AM 46.4 °F - 42.8 °F 87% 30.08 in 10.0 mi Calm Calm - N/A   Clear
12:50 AM 44.6 °F - 41.0 °F 87% 30.08 in 10.0 mi Calm Calm - N/A   Partly Cloudy
1:10 AM 44.6 °F - 41.0 °F 87% 30.08 in 10.0 mi Calm Calm - N/A   Clear
1:30 AM 44.6 °F - 39.2 °F 81% 30.08 in 10.0 mi Calm Calm - N/A   Partly Cloudy
1:50 AM 44.6 °F - 39.2 °F 81% 30.08 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:10 AM 41.0 °F - 37.4 °F 87% 30.09 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:30 AM 41.0 °F - 37.4 °F 87% 30.09 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:50 AM 41.0 °F - 35.6 °F 81% 30.09 in 10.0 mi Calm Calm - N/A   Scattered Clouds
3:10 AM 39.2 °F 37.0 °F 35.6 °F 87% 30.09 in 10.0 mi SW 3.5 mph - N/A   Mostly Cloudy
3:30 AM 41.0 °F - 37.4 °F 87% 30.10 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:50 AM 39.2 °F - 35.6 °F 87% 30.10 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:10 AM 37.4 °F - 32.0 °F 81% 30.10 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:30 AM 37.4 °F - 32.0 °F 81% 30.11 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:50 AM 37.4 °F - 32.0 °F 81% 30.12 in 10.0 mi Calm Calm - N/A   Clear
5:10 AM 35.6 °F 32.8 °F 32.0 °F 87% 30.12 in 10.0 mi South 3.5 mph - N/A   Clear
5:30 AM 35.6 °F - 32.0 °F 87% 30.12 in 10.0 mi Calm Calm - N/A   Clear
5:50 AM 35.6 °F - 32.0 °F 87% 30.12 in 10.0 mi Calm Calm - N/A   Clear
6:10 AM 35.6 °F - 32.0 °F 87% 30.13 in 10.0 mi Calm Calm - N/A   Clear
6:30 AM 32.0 °F - 28.4 °F 87% 30.13 in 10.0 mi Calm Calm - N/A   Clear
6:50 AM 33.8 °F - 30.2 °F 87% 30.14 in 10.0 mi Calm Calm - N/A   Clear
7:10 AM 35.6 °F 32.8 °F 32.0 °F 87% 30.14 in 10.0 mi SSW 3.5 mph - N/A   Clear
7:30 AM 37.4 °F - 33.8 °F 87% 30.15 in 10.0 mi Calm Calm - N/A   Clear
7:50 AM 42.8 °F - 39.2 °F 87% 30.16 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:10 AM 44.6 °F - 39.2 °F 81% 30.17 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
8:30 AM 46.4 °F - 41.0 °F 81% 30.18 in 9.0 mi Calm Calm - N/A   Partly Cloudy
8:50 AM 48.2 °F - 44.6 °F 87% 30.18 in 9.0 mi Calm Calm - N/A   Clear
9:10 AM 53.6 °F - 48.2 °F 82% 30.19 in 10.0 mi North 6.9 mph - N/A   Clear
9:30 AM 55.4 °F - 50.0 °F 82% 30.20 in 10.0 mi North 9.2 mph - N/A   Clear
9:50 AM 57.2 °F - 51.8 °F 82% 30.20 in 10.0 mi NNE 5.8 mph - N/A   Clear
10:10 AM 57.2 °F - 53.6 °F 88% 30.20 in 10.0 mi NE 6.9 mph - N/A   Clear
10:30 AM 59.0 °F - 53.6 °F 82% 30.20 in 10.0 mi NNE 9.2 mph - N/A   Clear
10:50 AM 59.0 °F - 55.4 °F 88% 30.20 in 10.0 mi NE 8.1 mph - N/A   Clear
11:10 AM 60.8 °F - 55.4 °F 82% 30.20 in 10.0 mi NE 6.9 mph - N/A   Clear
11:30 AM 62.6 °F - 57.2 °F 82% 30.20 in 10.0 mi ENE 8.1 mph - N/A   Clear
11:50 AM 62.6 °F - 57.2 °F 82% 30.20 in 10.0 mi NNW 4.6 mph 16.1 mph N/A   Clear
12:10 PM 64.4 °F - 59.0 °F 83% 30.20 in 10.0 mi North 8.1 mph - N/A   Clear
12:30 PM 64.4 °F - 59.0 °F 83% 30.19 in 10.0 mi NE 9.2 mph - N/A   Clear
12:50 PM 66.2 °F - 60.8 °F 83% 30.19 in 10.0 mi North 10.4 mph - N/A   Clear
1:10 PM 66.2 °F - 60.8 °F 83% 30.19 in 10.0 mi North 9.2 mph - N/A   Clear
1:30 PM 66.2 °F - 62.6 °F 88% 30.19 in 10.0 mi NNW 5.8 mph - N/A   Clear
1:50 PM 68.0 °F - 62.6 °F 83% 30.19 in 10.0 mi NNW 8.1 mph - N/A   Clear
2:10 PM 68.0 °F - 64.4 °F 88% 30.19 in 10.0 mi NNE 6.9 mph - N/A   Clear
2:30 PM 68.0 °F - 64.4 °F 88% 30.18 in 10.0 mi NE 9.2 mph 17.3 mph N/A   Clear
2:50 PM 69.8 °F - 64.4 °F 83% 30.18 in 10.0 mi NNE 6.9 mph - N/A   Clear
3:10 PM 69.8 °F - 66.2 °F 88% 30.17 in 10.0 mi NE 9.2 mph 17.3 mph N/A   Clear
3:30 PM 71.6 °F - 66.2 °F 83% 30.17 in 10.0 mi NNE 12.7 mph 20.7 mph N/A   Partly Cloudy
3:50 PM 71.6 °F - 66.2 °F 83% 30.17 in 10.0 mi North 5.8 mph - N/A   Partly Cloudy
4:10 PM 71.6 °F - 66.2 °F 83% 30.16 in 10.0 mi NNE 10.4 mph 17.3 mph N/A   Clear
4:30 PM 68.0 °F - 64.4 °F 88% 30.16 in 10.0 mi NE 5.8 mph - N/A   Mostly Cloudy
4:50 PM 69.8 °F - 64.4 °F 83% 30.15 in 10.0 mi ENE 5.8 mph - N/A   Scattered Clouds
5:10 PM 71.6 °F - 66.2 °F 83% 30.15 in 10.0 mi NNE 10.4 mph 17.3 mph N/A   Clear
5:30 PM 71.6 °F - 66.2 °F 83% 30.15 in 10.0 mi NNE 9.2 mph 17.3 mph N/A   Partly Cloudy
5:50 PM 71.6 °F - 66.2 °F 83% 30.15 in 10.0 mi NNE 11.5 mph - N/A   Partly Cloudy
6:10 PM 69.8 °F - 66.2 °F 88% 30.15 in 10.0 mi NE 10.4 mph - N/A   Clear
6:30 PM 68.0 °F - 64.4 °F 88% 30.16 in 10.0 mi North 8.1 mph - N/A   Clear
6:50 PM 68.0 °F - 62.6 °F 83% 30.16 in 10.0 mi NNE 15.0 mph - N/A   Clear
7:10 PM 66.2 °F - 60.8 °F 83% 30.16 in 10.0 mi North 12.7 mph 19.6 mph N/A   Clear
7:30 PM 64.4 °F - 59.0 °F 83% 30.17 in 10.0 mi NE 11.5 mph - N/A   Clear
8:10 PM 60.8 °F - 57.2 °F 88% 30.18 in 10.0 mi NE 10.4 mph - N/A   Clear
8:30 PM 59.0 °F - 55.4 °F 88% 30.19 in 10.0 mi NE 8.1 mph - N/A   Clear
8:50 PM 57.2 °F - 53.6 °F 88% 30.20 in 10.0 mi ENE 8.1 mph - N/A   Clear
9:10 PM 59.0 °F - 53.6 °F 82% 30.21 in 10.0 mi NE 6.9 mph - N/A   Clear
9:30 PM 57.2 °F - 53.6 °F 88% 30.22 in 10.0 mi ENE 9.2 mph - N/A   Partly Cloudy
9:50 PM 57.2 °F - 51.8 °F 82% 30.22 in 10.0 mi NE 10.4 mph - N/A   Clear
10:50 PM 53.6 °F - 48.2 °F 82% 30.24 in 10.0 mi NE 8.1 mph - N/A   Partly Cloudy
11:10 PM 50.0 °F - 46.4 °F 87% 30.24 in 10.0 mi NE 8.1 mph - N/A   Mostly Cloudy
11:30 PM 51.8 °F - 46.4 °F 82% 30.24 in 10.0 mi NE 8.1 mph - N/A   Overcast
11:50 PM 51.8 °F - 46.4 °F 82% 30.25 in 10.0 mi NE 5.8 mph - N/A   Overcast