, SD

(GMT )
Rapid City

Weather History for KRAP - September, 2011

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Tuesday, September 20, 2011

  Actual Average Record
Temperature  
Mean Temperature 52 °F 59 °F  
Max Temperature 64 °F 73 °F 93 °F (1960)
Min Temperature 39 °F 44 °F 29 °F (1983)
Degree Days  
Heating Degree Days 13 7  
Month to date heating degree days 102 91  
Since 1 July heating degree days 104 128  
Cooling Degree Days 0 1  
Month to date cooling degree days 32 53  
Year to date cooling degree days 663 625  
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 32 °F    
Average Humidity 50    
Maximum Humidity 73    
Minimum Humidity 27    
Precipitation  
Precipitation 0.00 in 0.04 in 1.83 in (1955)
Month to date precipitation 0.75 0.85  
Year to date precipitation 17.04 13.48  
Snow  
Snow 0.00 in 0.00 in T in (1995)
Month to date snowfall 0.0 0.1  
Since 1 July snowfall 0.0 0.1  
Since 1 September snowfall 0.0 0.1  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.08 in    
Wind  
Wind Speed 21 mph (NW)    
Max Wind Speed 44 mph    
Max Gust Speed 55 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 20, 2011 Rise Set
Actual Time 6:36 AM MDT 6:53 PM MDT
Civil Twilight 6:07 AM MDT 7:22 PM MDT
Nautical Twilight 5:33 AM MDT 7:56 PM MDT
Astronomical Twilight 4:59 AM MDT 8:31 PM MDT
Moon 11:47 PM MDT (9/20) 2:31 PM MDT (9/20)
Length of Visible Light 13h 14m
Length of Day
12h 16m
Waning Gibbous, 48% of the Moon is Illuminated
Sep 20
Waning Gibbous
Sep 27
New
Oct 3
First Quarter
Oct 11
Full
Oct 19
Last Quarter

Hourly Weather History & Observations

Time (MDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 53.1 °F - 37.9 °F 57% 29.94 in 10.0 mi NNW 26.5 mph 32.2 mph N/A   Partly Cloudy
1:52 AM 54.0 °F - 37.0 °F 53% 29.85 in 10.0 mi NNW 36.8 mph 50.6 mph N/A   Clear
2:52 AM 51.1 °F - 37.9 °F 61% 29.95 in 10.0 mi NNW 24.2 mph 39.1 mph N/A   Partly Cloudy
3:52 AM 50.0 °F - 36.0 °F 59% 29.99 in 10.0 mi NW 26.5 mph 43.7 mph N/A   Scattered Clouds
4:52 AM 50.0 °F - 34.0 °F 54% 30.01 in 10.0 mi NW 21.9 mph 32.2 mph N/A   Scattered Clouds
5:52 AM 50.0 °F - 33.1 °F 52% 30.01 in 10.0 mi WNW 16.1 mph 28.8 mph N/A   Clear
6:52 AM 48.0 °F - 32.0 °F 54% 30.04 in 10.0 mi WNW 11.5 mph - N/A   Clear
8:52 AM 55.9 °F - 32.0 °F 40% 30.04 in 10.0 mi NW 26.5 mph 40.3 mph N/A   Clear
9:52 AM 57.0 °F - 32.0 °F 39% 30.05 in 10.0 mi NW 29.9 mph 49.5 mph N/A   Clear
10:52 AM 59.0 °F - 30.9 °F 35% 30.07 in 10.0 mi NW 36.8 mph 48.3 mph N/A   Clear
11:52 AM 60.8 °F - 30.2 °F 31% 30.09 in 10.0 mi NW 34.5 mph 49.5 mph N/A   Partly Cloudy
12:52 PM 62.1 °F - 30.0 °F 30% 30.07 in 10.0 mi NNW 33.4 mph 41.4 mph N/A   Partly Cloudy
1:52 PM 63.0 °F - 32.0 °F 31% 30.07 in 10.0 mi NNW 31.1 mph 40.3 mph N/A   Partly Cloudy
2:52 PM 62.1 °F - 28.9 °F 29% 30.08 in 10.0 mi NNW 29.9 mph 44.9 mph N/A   Partly Cloudy
3:52 PM 60.1 °F - 28.0 °F 30% 30.10 in 10.0 mi NW 24.2 mph 42.6 mph N/A   Mostly Cloudy
4:52 PM 62.1 °F - 30.0 °F 30% 30.11 in 10.0 mi NW 27.6 mph 38.0 mph N/A   Mostly Cloudy
5:52 PM 59.0 °F - 30.0 °F 33% 30.13 in 10.0 mi NNW 20.7 mph 33.4 mph N/A   Partly Cloudy
6:52 PM 54.0 °F - 30.9 °F 41% 30.16 in 10.0 mi NNW 11.5 mph - N/A   Clear
7:52 PM 46.9 °F - 32.0 °F 56% 30.18 in 10.0 mi NW 9.2 mph - N/A   Clear
8:52 PM 45.0 °F 40.6 °F 32.0 °F 60% 30.19 in 10.0 mi NW 8.1 mph - N/A   Clear
9:52 PM 44.1 °F 38.6 °F 33.1 °F 65% 30.21 in 10.0 mi NW 10.4 mph - N/A   Clear
10:52 PM 45.0 °F 40.1 °F 33.1 °F 63% 30.21 in 10.0 mi NNW 9.2 mph - N/A   Clear
11:52 PM 41.0 °F 36.4 °F 33.1 °F 73% 30.22 in 10.0 mi NW 6.9 mph - N/A   Clear