Weather History for Yellowstone, WY

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Wednesday, September 18, 2013

  Actual Average Record
Temperature  
Mean Temperature 38 °F 46 °F  
Max Temperature 43 °F 61 °F 75 °F (2009)
Min Temperature 32 °F 31 °F 18 °F (2003)
Degree Days  
Heating Degree Days 27 19  
Month to date heating degree days 221 289  
Since 1 July heating degree days 645 876  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 36 °F    
Average Humidity 91    
Maximum Humidity 100    
Minimum Humidity 82    
Precipitation  
Precipitation 0.53 in 0.05 in 0.53 in (2013)
Month to date precipitation 2.53 0.88  
Year to date precipitation 14.70 14.95  
Sea Level Pressure  
Sea Level Pressure 29.94 in    
Wind  
Wind Speed 3 mph (West)    
Max Wind Speed 15 mph    
Max Gust Speed 25 mph    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Sep. 18, 2013 Rise Set
Actual Time 7:04 AM MDT 7:26 PM MDT
Civil Twilight 6:35 AM MDT 7:55 PM MDT
Nautical Twilight 6:00 AM MDT 8:29 PM MDT
Astronomical Twilight 5:25 AM MDT 9:04 PM MDT
Moon 6:50 PM MDT (9/18) 6:10 AM MDT (9/18)
Length of Visible Light 13h 19m
Length of Day
12h 21m
Waxing Gibbous, 99% of the Moon is Illuminated
Sep 18
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
12:56 AM 39.9 °F - 39.0 °F 97% 29.79 in - Calm Calm - N/A   Unknown
1:56 AM 39.0 °F - 39.0 °F 100% 29.80 in - Calm Calm - N/A   Unknown
2:56 AM 39.9 °F - 39.0 °F 97% 29.78 in - Calm Calm - N/A   Unknown
3:56 AM 42.1 °F 39.2 °F 41.0 °F 96% 29.77 in - WNW 4.6 mph - 0.02 in   Unknown
4:56 AM 39.0 °F 34.0 °F 37.0 °F 93% 29.79 in - Variable 6.9 mph 19.6 mph 0.09 in   Unknown
5:56 AM 39.0 °F 35.7 °F 36.0 °F 89% 29.81 in - Variable 4.6 mph - 0.01 in   Unknown
6:56 AM 39.9 °F 37.8 °F 37.0 °F 89% 29.82 in - Variable 3.5 mph - N/A   Unknown
7:56 AM 39.9 °F - 36.0 °F 86% 29.86 in - Calm Calm - N/A   Unknown
8:56 AM 39.9 °F - 37.0 °F 89% 29.86 in - Calm Calm - N/A   Unknown
9:56 AM 41.0 °F - 37.0 °F 86% 29.86 in - Calm Calm - N/A   Unknown
10:56 AM 39.0 °F 33.4 °F 35.1 °F 86% 29.88 in - West 8.1 mph 17.3 mph 0.01 in   Unknown
11:56 AM 39.0 °F 36.8 °F 36.0 °F 89% 29.90 in - Variable 3.5 mph - 0.03 in   Unknown
12:56 PM 39.0 °F 32.8 °F 36.0 °F 89% 29.92 in - WSW 9.2 mph 17.3 mph 0.01 in   Unknown
1:56 PM 39.0 °F 34.8 °F 36.0 °F 89% 29.94 in - Variable 5.8 mph 19.6 mph 0.02 in   Unknown
2:56 PM 42.1 °F 39.2 °F 37.9 °F 85% 29.94 in - Variable 4.6 mph - 0.01 in   Unknown
3:56 PM 39.0 °F 34.0 °F 36.0 °F 89% 29.97 in - Variable 6.9 mph - 0.01 in   Unknown
4:56 PM 33.1 °F 28.7 °F 32.0 °F 96% 30.05 in - Variable 4.6 mph - 0.11 in   Unknown
5:56 PM 32.0 °F - 32.0 °F 100% 30.06 in - Calm Calm - 0.19 in   Unknown
6:56 PM 33.1 °F - 33.1 °F 100% 30.07 in - Calm Calm - 0.02 in   Unknown
7:56 PM 32.0 °F - 32.0 °F 100% 30.09 in - Calm Calm - N/A   Unknown
8:56 PM 33.1 °F - 32.0 °F 96% 30.12 in - Calm Calm - N/A   Unknown
9:56 PM 33.1 °F - 32.0 °F 96% 30.13 in - Calm Calm - N/A   Unknown
10:56 PM 32.0 °F - 32.0 °F 100% 30.14 in - Calm Calm - N/A   Unknown
11:56 PM 33.1 °F 30.0 °F 32.0 °F 96% 30.15 in - Variable 3.5 mph - N/A   Unknown