Weather History for Riverton, WY

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Tuesday, December 18, 2012

  Actual Average Record
Temperature  
Mean Temperature 21 °F 19 °F  
Max Temperature 32 °F 31 °F 59 °F (2013)
Min Temperature 10 °F 7 °F -11 °F (1996)
Degree Days  
Heating Degree Days 44 46  
Month to date heating degree days 643 802  
Since 1 July heating degree days 2224 2718  
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 35    
Maximum Humidity 53    
Minimum Humidity 16    
Precipitation  
Precipitation 0.00 in 0.01 in 0.03 in (2002)
Month to date precipitation 0.04 0.16  
Year to date precipitation 2.91 9.27  
Snow  
Snow 0.00 in - - ()
Month to date snowfall 0.5  
Since 1 July snowfall 3.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.80 in    
Wind  
Wind Speed 14 mph (WNW)    
Max Wind Speed 24 mph    
Max Gust Speed 30 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Dec. 18, 2012 Rise Set
Actual Time 7:40 AM MST 4:40 PM MST
Civil Twilight 7:08 AM MST 5:13 PM MST
Nautical Twilight 6:32 AM MST 5:49 PM MST
Astronomical Twilight 5:57 AM MST 6:23 PM MST
Moon 11:13 AM MST (12/18) 11:19 PM MST (12/18)
Length of Visible Light 10h 05m
Length of Day
9h 00m
Waxing Crescent, 35% of the Moon is Illuminated
Dec 18
Waxing Crescent
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

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 25.0 °F 14.2 °F -0.0 °F 34% 29.66 in 10.0 mi West 11.5 mph - N/A   Clear
1:53 AM 21.9 °F 11.0 °F -0.9 °F 37% 29.69 in 10.0 mi WSW 10.4 mph - N/A   Clear
2:53 AM 24.1 °F 12.0 °F -2.0 °F 32% 29.71 in 10.0 mi West 13.8 mph - N/A   Clear
3:53 AM 21.9 °F 9.2 °F -2.0 °F 35% 29.70 in 10.0 mi West 13.8 mph - N/A   Clear
4:53 AM 19.0 °F 6.8 °F -2.0 °F 40% 29.75 in 10.0 mi West 11.5 mph - N/A   Clear
5:53 AM 15.1 °F 2.5 °F -2.9 °F 45% 29.79 in 10.0 mi West 10.4 mph - N/A   Clear
6:53 AM 16.0 °F 3.6 °F -4.0 °F 41% 29.81 in 10.0 mi West 10.4 mph - N/A   Clear
7:53 AM 12.0 °F 2.7 °F -2.9 °F 51% 29.82 in 10.0 mi WNW 5.8 mph - N/A   Clear
8:53 AM 15.1 °F 3.3 °F -0.0 °F 51% 29.84 in 10.0 mi WNW 9.2 mph - N/A   Clear
9:53 AM 21.9 °F 9.8 °F -0.0 °F 38% 29.82 in 10.0 mi WNW 12.7 mph - N/A   Clear
10:53 AM 26.1 °F 15.6 °F -0.0 °F 32% 29.81 in 10.0 mi West 11.5 mph - N/A   Clear
11:53 AM 30.0 °F 17.2 °F -8.0 °F 19% 29.78 in 10.0 mi NW 20.7 mph 28.8 mph N/A   Clear
12:53 PM 30.0 °F 17.5 °F -11.0 °F 17% 29.76 in 10.0 mi NW 19.6 mph - N/A   Clear
1:53 PM 30.0 °F 18.3 °F -11.0 °F 17% 29.77 in 10.0 mi NW 17.3 mph - N/A   Clear
2:53 PM 28.0 °F 16.5 °F -8.0 °F 21% 29.77 in 10.0 mi NW 15.0 mph - N/A   Clear
3:53 PM 26.1 °F 13.6 °F -9.9 °F 20% 29.77 in 10.0 mi NW 16.1 mph - N/A   Clear
4:53 PM 24.1 °F 12.5 °F -9.0 °F 23% 29.79 in 10.0 mi NW 12.7 mph - N/A   Clear
5:53 PM 21.9 °F 9.2 °F -9.0 °F 25% 29.84 in 10.0 mi NNW 13.8 mph - N/A   Clear
6:53 PM 21.0 °F 7.6 °F -7.1 °F 29% 29.85 in 10.0 mi NNW 15.0 mph - N/A   Clear
7:53 PM 21.9 °F 6.9 °F -6.0 °F 29% 29.88 in 10.0 mi NW 19.6 mph - N/A   Clear
8:53 PM 21.0 °F 7.1 °F -5.1 °F 32% 29.89 in 10.0 mi NW 16.1 mph - N/A   Clear
9:53 PM 19.0 °F 5.6 °F -6.0 °F 33% 29.86 in 10.0 mi NW 13.8 mph - N/A   Clear
10:53 PM 16.0 °F 3.6 °F -5.1 °F 39% 29.88 in 10.0 mi NW 10.4 mph - N/A   Clear
11:53 PM 17.1 °F 3.0 °F -7.1 °F 34% 29.88 in 10.0 mi NW 13.8 mph - N/A   Clear