Weather History for Greybull, WY

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Friday, September 20, 2013

  Actual Average Record
Temperature  
Mean Temperature 58 °F 57 °F  
Max Temperature 75 °F 72 °F 83 °F (2008)
Min Temperature 40 °F 41 °F 31 °F (1999)
Degree Days  
Heating Degree Days 7 9  
Month to date heating degree days 30 100  
Since 1 July heating degree days 30 121  
Cooling Degree Days 0 0  
Month to date cooling degree days 95 34  
Year to date cooling degree days 1004 667  
Growing Degree Days 7 (Base 50)    
Moisture  
Dew Point 37 °F    
Average Humidity 53    
Maximum Humidity 89    
Minimum Humidity 17    
Precipitation  
Precipitation 0.00 in 0.04 in 0.30 in (2004)
Month to date precipitation 0.52 0.59  
Year to date precipitation 3.14 6.04  
Sea Level Pressure  
Sea Level Pressure 29.99 in    
Wind  
Wind Speed 3 mph (SE)    
Max Wind Speed 13 mph    
Max Gust Speed 17 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

Sep. 20, 2013 Rise Set
Actual Time 6:57 AM MDT 7:12 PM MDT
Civil Twilight 6:28 AM MDT 7:41 PM MDT
Nautical Twilight 5:54 AM MDT 8:16 PM MDT
Astronomical Twilight 5:18 AM MDT 8:51 PM MDT
Moon 7:42 PM MDT (9/20) 8:20 AM MDT (9/20)
Length of Visible Light 13h 13m
Length of Day
12h 15m
Full, 98% of the Moon is Illuminated
Sep 20
Full
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
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 46.9 °F - 41.0 °F 80% 30.13 in 10.0 mi SE 3.5 mph - N/A   Clear
1:53 AM 46.9 °F - 41.0 °F 80% 30.14 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 45.0 °F - 39.9 °F 82% 30.12 in 10.0 mi Calm Calm - N/A   Clear
3:53 AM 44.1 °F 41.5 °F 39.9 °F 85% 30.12 in 10.0 mi SE 4.6 mph - N/A   Clear
4:53 AM 42.1 °F 40.2 °F 39.0 °F 89% 30.12 in 10.0 mi ESE 3.5 mph - N/A   Clear
5:53 AM 42.1 °F 40.2 °F 37.9 °F 85% 30.11 in 10.0 mi ESE 3.5 mph - N/A   Clear
6:53 AM 41.0 °F - 37.9 °F 89% 30.11 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 43.0 °F - 39.9 °F 89% 30.12 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 46.0 °F 44.8 °F 39.9 °F 79% 30.11 in 10.0 mi ESE 3.5 mph - N/A   Clear
9:53 AM 52.0 °F - 42.1 °F 69% 30.10 in 10.0 mi SE 3.5 mph - N/A   Clear
10:53 AM 57.0 °F - 39.9 °F 53% 30.07 in 10.0 mi SSE 4.6 mph - N/A   Clear
11:53 AM 61.0 °F - 39.9 °F 46% 30.04 in 10.0 mi Calm Calm - N/A   Clear
12:53 PM 64.9 °F - 37.9 °F 37% 30.00 in 10.0 mi SE 4.6 mph - N/A   Clear
1:53 PM 69.1 °F - 35.1 °F 29% 29.95 in 10.0 mi SE 10.4 mph - N/A   Clear
2:53 PM 71.1 °F - 34.0 °F 26% 29.91 in 10.0 mi South 10.4 mph - 0.01 in   Clear
3:53 PM 72.0 °F - 32.0 °F 23% 29.89 in 10.0 mi SSW 6.9 mph - N/A   Clear
4:53 PM 73.9 °F - 27.0 °F 18% 29.87 in 10.0 mi Variable 5.8 mph - N/A   Clear
5:53 PM 73.0 °F - 28.9 °F 20% 29.85 in 10.0 mi South 5.8 mph - N/A   Clear
6:53 PM 70.0 °F - 33.1 °F 26% 29.85 in 10.0 mi Calm Calm - N/A   Clear
7:53 PM 66.9 °F - 35.1 °F 31% 29.84 in 10.0 mi Calm Calm - N/A   Clear
8:53 PM 60.1 °F - 37.0 °F 42% 29.85 in 10.0 mi ESE 4.6 mph - N/A   Clear
9:53 PM 57.0 °F - 37.0 °F 47% 29.84 in 10.0 mi SE 3.5 mph - N/A   Clear
10:53 PM 54.0 °F - 37.9 °F 55% 29.82 in 10.0 mi SE 3.5 mph - N/A   Clear
11:53 PM 51.1 °F - 39.9 °F 66% 29.82 in 10.0 mi Calm Calm - N/A   Clear