Weather History for Riverton, WY

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Sunday, December 9, 2012

  Actual Average Record
Temperature  
Mean Temperature 12 °F 20 °F  
Max Temperature 19 °F 32 °F 49 °F (1996)
Min Temperature 5 °F 8 °F -21 °F (2009)
Degree Days  
Heating Degree Days 53 45  
Month to date heating degree days 289 392  
Since 1 July heating degree days 1870 2308  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 765 494  
Moisture  
Dew Point 5 °F    
Average Humidity 66    
Maximum Humidity 80    
Minimum Humidity 51    
Precipitation  
Precipitation 0.01 in 0.01 in 0.13 in (1997)
Month to date precipitation 0.04 0.09  
Year to date precipitation 2.91 9.20  
Snow  
Snow 0.30 in - - ()
Month to date snowfall 0.5  
Since 1 July snowfall 3.0  
Snow Depth 1.00 in    
Sea Level Pressure  
Sea Level Pressure 30.24 in    
Wind  
Wind Speed 6 mph (SE)    
Max Wind Speed 21 mph    
Max Gust Speed 26 mph    
Visibility 8 miles    
Events Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Dec. 09, 2012 Rise Set
Actual Time 7:34 AM MST 4:38 PM MST
Civil Twilight 7:01 AM MST 5:11 PM MST
Nautical Twilight 6:26 AM MST 5:46 PM MST
Astronomical Twilight 5:51 AM MST 6:21 PM MST
Moon 3:05 AM MST (12/9) 1:51 PM MST (12/9)
Length of Visible Light 10h 09m
Length of Day
9h 04m
Waning Crescent, 18% of the Moon is Illuminated
Dec 9
Waning Crescent
Dec 13
New
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Hourly Weather History & Observations

Time (MST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 14.0 °F -0.2 °F 8.1 °F 77% 30.16 in 2.5 mi NNE 12.7 mph 18.4 mph 0.00 in Snow Light Snow
1:16 AM 14.0 °F 0.5 °F 8.6 °F 79% 30.03 in 1.5 mi NNE 11.5 mph - 0.00 in Snow Light Snow
1:45 AM 14.0 °F 1.2 °F 8.6 °F 79% 30.04 in 3.0 mi NE 10.4 mph - 0.01 in Snow Light Snow
1:53 AM 14.0 °F -0.2 °F 8.1 °F 77% 30.18 in 3.0 mi NNE 12.7 mph - 0.01 in Snow Light Snow
2:01 AM 14.0 °F 2.9 °F 8.6 °F 79% 30.05 in 2.0 mi NE 8.1 mph - 0.00 in Snow Light Snow
2:12 AM 14.0 °F 2.9 °F 6.8 °F 73% 30.05 in 4.0 mi NE 8.1 mph - 0.00 in Snow Light Snow
2:41 AM 14.0 °F 2.9 °F 6.8 °F 73% 30.06 in 4.0 mi ENE 8.1 mph - 0.00 in Snow Light Snow
2:53 AM 14.0 °F 2.0 °F 6.1 °F 71% 30.21 in 9.0 mi ENE 9.2 mph - 0.00 in   Overcast
3:53 AM 12.0 °F -0.4 °F 7.0 °F 80% 30.25 in 10.0 mi ESE 9.2 mph - N/A   Overcast
4:53 AM 9.0 °F -0.9 °F 3.0 °F 77% 30.30 in 10.0 mi SE 5.8 mph - N/A   Partly Cloudy
5:53 AM 9.0 °F 2.4 °F 3.0 °F 77% 30.32 in 10.0 mi SE 3.5 mph - N/A   Clear
6:53 AM 8.1 °F 1.4 °F 1.9 °F 76% 30.36 in 10.0 mi SE 3.5 mph - N/A   Clear
7:53 AM 8.1 °F 1.4 °F 1.9 °F 76% 30.38 in 10.0 mi South 3.5 mph - N/A   Clear
8:50 AM 12.2 °F - 5.0 °F 73% 30.19 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:53 AM 12.9 °F - 6.1 °F 74% 30.39 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:53 AM 12.9 °F 6.9 °F 5.0 °F 71% 30.41 in 10.0 mi SE 3.5 mph - N/A   Overcast
10:53 AM 14.0 °F 8.2 °F 6.1 °F 71% 30.42 in 10.0 mi SSE 3.5 mph - N/A   Mostly Cloudy
11:07 AM 14.0 °F 8.2 °F 6.8 °F 73% 30.21 in 10.0 mi South 3.5 mph - N/A   Scattered Clouds
11:53 AM 15.1 °F 7.7 °F 6.1 °F 68% 30.39 in 10.0 mi Variable 4.6 mph - N/A   Partly Cloudy
12:53 PM 16.0 °F 8.8 °F 6.1 °F 65% 30.36 in 10.0 mi South 4.6 mph - N/A   Partly Cloudy
1:53 PM 18.0 °F - 6.1 °F 60% 30.34 in 10.0 mi Calm Calm - N/A   Clear
2:53 PM 18.0 °F 11.1 °F 6.1 °F 60% 30.31 in 10.0 mi SSE 4.6 mph - N/A   Clear
3:53 PM 19.0 °F - 5.0 °F 54% 30.29 in 10.0 mi Calm Calm - N/A   Clear
4:53 PM 16.0 °F 10.4 °F 3.9 °F 59% 30.29 in 10.0 mi South 3.5 mph - N/A   Clear
5:53 PM 5.0 °F -2.1 °F -2.0 °F 73% 30.33 in 10.0 mi NNW 3.5 mph - N/A   Clear
6:53 PM 10.9 °F - 3.0 °F 70% 30.25 in 10.0 mi Calm Calm - N/A   Clear
7:53 PM 12.0 °F 4.1 °F 1.9 °F 64% 30.22 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
8:53 PM 9.0 °F -5.1 °F 1.9 °F 73% 30.17 in 10.0 mi West 10.4 mph 18.4 mph N/A   Partly Cloudy
9:53 PM 10.9 °F -4.1 °F 3.0 °F 70% 30.15 in 10.0 mi WSW 12.7 mph - N/A   Clear
10:53 PM 10.9 °F -4.7 °F 1.9 °F 67% 30.13 in 10.0 mi West 13.8 mph - N/A   Clear
11:53 PM 12.0 °F -2.7 °F -0.0 °F 59% 30.12 in 10.0 mi West 12.7 mph - N/A   Clear