Weather Almanac for Rapid City WFO, SD

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Monday, September 17, 2012

  Average Record
Temperature  
Mean Temperature 61 °F  
Max Temperature 72 °F 94 °F (2000)
Min Temperature 50 °F 30 °F (1901)
Degree Days  
Heating Degree Days 6  
Month to date heating degree days   64  
Since 1 July heating degree days   94  
Cooling Degree Days 2  
Month to date cooling degree days   55  
Year to date cooling degree days   650  
Moisture  
Dew Point    
Average Humidity    
Maximum Humidity    
Minimum Humidity    
Precipitation  
Precipitation 0.05 in 1.10 in (1908)
Month to date precipitation   0.89  
Year to date precipitation   16.57  
Snow  
Snow 0.00 in - ()
Month to date snowfall   0.0  
Since 1 July snowfall   0.0  
Since 1 September snowfall   0.0  
Snow Depth    
Wind  
Wind Speed    
Max Wind Speed    
Max Gust Speed    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 17, 2012 Rise Set
Actual Time 6:34 AM MDT 6:58 PM MDT
Civil Twilight 6:05 AM MDT 7:27 PM MDT
Nautical Twilight 5:31 AM MDT 8:01 PM MDT
Astronomical Twilight 4:56 AM MDT 8:36 PM MDT
Moon 8:33 AM MDT (9/17) 7:34 PM MDT (9/17)
Length of Visible Light 13h 21m
Length of Day
12h 23m
Waxing Crescent, 4% of the Moon is Illuminated
Sep 17
Waxing Crescent
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New

No daily or hourly history data available