Weather History for Greybull, WY

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Wednesday, May 13, 2009

  Actual Average Record
Temperature  
Mean Temperature 46 °F 56 °F  
Max Temperature 60 °F 70 °F 94 °F (2001)
Min Temperature 36 °F 42 °F 32 °F (1988)
Degree Days  
Heating Degree Days 18 10  
Month to date heating degree days 152  
Since 1 July heating degree days 7551  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 1  
Moisture  
Dew Point 18 °F    
Average Humidity 32    
Maximum Humidity 49    
Minimum Humidity 21    
Precipitation  
Precipitation 0.00 in 0.05 in 0.06 in (2003)
Month to date precipitation 0.49  
Year to date precipitation 2.01  
Sea Level Pressure  
Sea Level Pressure 29.96 in    
Wind  
Wind Speed 10 mph (North)    
Max Wind Speed 18 mph    
Max Gust Speed 29 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Astronomy

May. 13, 2009 Rise Set
Actual Time 5:46 AM MDT 8:31 PM MDT
Civil Twilight 5:13 AM MDT 9:05 PM MDT
Nautical Twilight 4:30 AM MDT 9:47 PM MDT
Astronomical Twilight 3:41 AM MDT 10:37 PM MDT
Moon 12:16 AM MDT (5/13) 8:55 AM MDT (5/13)
Length of Visible Light 15h 52m
Length of Day
14h 44m
Waning Gibbous, 81% of the Moon is Illuminated
May 13
Waning Gibbous
May 17
Last Quarter
May 24
New
May 30
First Quarter
Jun 7
Full

Hourly Weather History & Observations

Time (MDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 43.0 °F 35.4 °F 19.9 °F 40% 29.76 in 10.0 mi NW 16.1 mph 25.3 mph N/A   Clear
1:53 AM 41.0 °F 32.8 °F 21.0 °F 45% 29.78 in 10.0 mi NW 16.1 mph - N/A   Clear
2:53 AM 39.0 °F 35.7 °F 21.0 °F 49% 29.80 in 10.0 mi South 4.6 mph - N/A   Clear
3:53 AM 37.0 °F 29.8 °F 18.0 °F 46% 29.80 in 10.0 mi West 10.4 mph - N/A   Clear
4:53 AM 36.0 °F - 17.1 °F 46% 29.83 in 10.0 mi Calm Calm - N/A   Clear
5:53 AM 36.0 °F 30.3 °F 14.0 °F 41% 29.84 in 10.0 mi NW 6.9 mph - N/A   Clear
6:53 AM 37.0 °F 32.4 °F 14.0 °F 39% 29.90 in 10.0 mi NNW 5.8 mph - N/A   Clear
7:53 AM 39.9 °F 35.1 °F 14.0 °F 35% 29.97 in 10.0 mi NW 6.9 mph - N/A   Mostly Cloudy
8:53 AM 43.0 °F 41.3 °F 15.1 °F 32% 29.99 in 10.0 mi North 3.5 mph - N/A   Scattered Clouds
9:53 AM 45.0 °F 42.6 °F 16.0 °F 31% 30.01 in 10.0 mi Variable 4.6 mph - N/A   Clear
10:53 AM 48.9 °F - 15.1 °F 26% 30.01 in 10.0 mi SE 4.6 mph - N/A   Clear
11:53 AM 52.0 °F - 12.9 °F 21% 30.03 in 10.0 mi North 10.4 mph 23.0 mph N/A   Clear
12:53 PM 53.1 °F - 18.0 °F 25% 30.05 in 10.0 mi Variable 6.9 mph 26.5 mph N/A   Clear
1:53 PM 54.0 °F - 17.1 °F 23% 30.04 in 10.0 mi NNW 17.3 mph 28.8 mph N/A   Scattered Clouds
2:53 PM 55.0 °F - 19.0 °F 24% 30.06 in 10.0 mi North 13.8 mph 20.7 mph N/A   Partly Cloudy
3:53 PM 57.9 °F - 18.0 °F 21% 30.04 in 10.0 mi NNW 18.4 mph 25.3 mph N/A   Clear
4:53 PM 57.9 °F - 18.0 °F 21% 30.03 in 10.0 mi NNW 11.5 mph 19.6 mph N/A   Clear
5:53 PM 57.9 °F - 18.0 °F 21% 30.04 in 10.0 mi NNE 6.9 mph - N/A   Clear
6:53 PM 57.9 °F - 18.0 °F 21% 30.01 in 10.0 mi Variable 3.5 mph - N/A   Clear
7:53 PM 55.0 °F - 19.0 °F 24% 30.01 in 10.0 mi East 5.8 mph - N/A   Clear
8:53 PM 51.1 °F - 21.0 °F 31% 30.01 in 10.0 mi ESE 4.6 mph - N/A   Clear
9:53 PM 48.0 °F - 21.0 °F 34% 30.02 in 10.0 mi ESE 4.6 mph - N/A   Clear
10:53 PM 44.1 °F 41.5 °F 21.9 °F 42% 30.00 in 10.0 mi ESE 4.6 mph - N/A   Clear
11:53 PM 44.1 °F 39.5 °F 21.0 °F 40% 29.96 in 10.0 mi East 8.1 mph - N/A   Clear