Weather History for Yellowstone, WY

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Wednesday, August 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 60 °F 55 °F  
Max Temperature 78 °F 71 °F 82 °F (2009)
Min Temperature 42 °F 38 °F 32 °F (2000)
Degree Days  
Heating Degree Days 5 10  
Month to date heating degree days 155 186  
Since 1 June heating degree days 786 962  
Since 1 July heating degree days 353 469  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Since 1 June cooling degree days 0 0  
Growing Degree Days 9 (Base 50)    
Moisture  
Dew Point 44 °F    
Average Humidity 64    
Maximum Humidity 96    
Minimum Humidity 31    
Precipitation  
Precipitation 0.32 in 0.05 in 0.64 in (2004)
Month to date precipitation 0.68 0.97  
Year to date precipitation 12.03 13.52  
Sea Level Pressure  
Sea Level Pressure 30.14 in    
Wind  
Wind Speed 2 mph (SE)    
Max Wind Speed 10 mph    
Max Gust Speed 21 mph    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Astronomy

Aug. 21, 2013 Rise Set
Actual Time 6:31 AM MDT 8:16 PM MDT
Civil Twilight 6:00 AM MDT 8:47 PM MDT
Nautical Twilight 5:22 AM MDT 9:25 PM MDT
Astronomical Twilight 4:42 AM MDT 10:05 PM MDT
Moon 8:21 PM MDT (8/21) 7:19 AM MDT (8/21)
Length of Visible Light 14h 46m
Length of Day
13h 45m
Full, 99% of the Moon is Illuminated
Aug 21
Full
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter
Sep 19
Full

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 52.0 °F - 36.0 °F 54% 30.06 in - Calm Calm - N/A   Unknown
1:56 AM 48.9 °F - 36.0 °F 61% 30.06 in - Calm Calm - N/A   Unknown
2:56 AM 46.9 °F - 37.0 °F 68% 30.06 in - Calm Calm - N/A   Unknown
3:56 AM 46.0 °F - 37.0 °F 71% 30.07 in - Calm Calm - N/A   Unknown
4:56 AM 45.0 °F 43.5 °F 37.0 °F 74% 30.07 in - NW 3.5 mph - N/A   Unknown
5:56 AM 44.1 °F - 37.9 °F 79% 30.10 in - Calm Calm - N/A   Unknown
6:56 AM 43.0 °F - 37.9 °F 82% 30.13 in - Calm Calm - N/A   Unknown
7:56 AM 48.0 °F - 41.0 °F 77% 30.12 in - Calm Calm - N/A   Unknown
8:56 AM 57.9 °F - 48.0 °F 70% 30.11 in - Calm Calm - N/A   Unknown
9:56 AM 59.0 °F - 48.9 °F 69% 30.14 in - SE 3.5 mph - N/A   Unknown
10:56 AM 63.0 °F - 50.0 °F 63% 30.10 in - Variable 3.5 mph - N/A   Unknown
11:56 AM 68.0 °F - 46.9 °F 47% 30.12 in - East 4.6 mph - N/A   Unknown
12:56 PM 68.0 °F - 46.9 °F 47% 30.12 in - SSE 8.1 mph - N/A   Unknown
1:56 PM 75.9 °F - 42.1 °F 30% 30.07 in - South 5.8 mph - N/A   Unknown
2:56 PM 75.0 °F - 42.1 °F 31% 30.08 in - Variable 4.6 mph - N/A   Unknown
3:56 PM 75.9 °F - 42.1 °F 30% 30.06 in - Variable 4.6 mph - N/A   Unknown
4:56 PM 62.1 °F - 48.9 °F 62% 30.18 in - Variable 3.5 mph - N/A   Unknown
5:56 PM 54.0 °F - 51.1 °F 90% 30.24 in - Calm Calm - 0.29 in   Unknown
6:56 PM 53.1 °F - 50.0 °F 89% 30.29 in - Variable 4.6 mph - N/A   Unknown
7:56 PM 52.0 °F - 48.0 °F 86% 30.28 in - Calm Calm - N/A   Unknown
8:56 PM 51.1 °F - 50.0 °F 96% 30.24 in - Calm Calm - N/A   Unknown
9:56 PM 51.1 °F - 50.0 °F 96% 30.23 in - Calm Calm - 0.01 in   Unknown
10:56 PM 52.0 °F - 48.0 °F 86% 30.17 in - Calm Calm - 0.02 in   Unknown
11:56 PM 51.1 °F - 50.0 °F 96% 30.17 in - Calm Calm - N/A   Unknown