Weather History for Sioux Falls, SD

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Tuesday, December 20, 2011

  Actual Average Record
Temperature  
Mean Temperature 21 °F 18 °F  
Max Temperature 36 °F 27 °F 57 °F (1941)
Min Temperature 5 °F 8 °F -26 °F (1916)
Degree Days  
Heating Degree Days 44 47  
Month to date heating degree days 818 892  
Since 1 July heating degree days 2268 2604  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 807 690  
Moisture  
Dew Point 13 °F    
Average Humidity 68    
Maximum Humidity 91    
Minimum Humidity 44    
Precipitation  
Precipitation 0.00 in 0.02 in 1.00 in (1911)
Month to date precipitation 0.23 0.48  
Year to date precipitation 23.89 26.17  
Snow  
Snow 0.00 in 0.20 in 7.50 in (1911)
Month to date snowfall 0.3 5.4  
Since 1 July snowfall 0.4 14.1  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 6 mph (SSW)    
Max Wind Speed 17 mph    
Max Gust Speed 22 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 20, 2011 Rise Set
Actual Time 7:56 AM CST 4:52 PM CST
Civil Twilight 7:23 AM CST 5:25 PM CST
Nautical Twilight 6:47 AM CST 6:01 PM CST
Astronomical Twilight 6:12 AM CST 6:36 PM CST
Moon 3:14 AM CST (12/20) 1:33 PM CST (12/20)
Length of Visible Light 10h 01m
Length of Day
8h 56m
Waning Crescent, 21% of the Moon is Illuminated
Dec 20
Waning Crescent
Dec 24
New
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter

Hourly Weather History & Observations

Time (CST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 15.1 °F - 9.0 °F 77% 30.29 in 10.0 mi Calm Calm - N/A   Clear
1:56 AM 12.9 °F 6.9 °F 9.0 °F 84% 30.29 in 10.0 mi WNW 3.5 mph - N/A   Clear
2:56 AM 12.0 °F - 8.1 °F 84% 30.27 in 10.0 mi Calm Calm - N/A   Clear
3:56 AM 10.9 °F - 7.0 °F 84% 30.25 in 10.0 mi Calm Calm - N/A   Clear
4:56 AM 9.0 °F - 6.1 °F 88% 30.23 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 8.1 °F - 5.0 °F 87% 30.20 in 10.0 mi Calm Calm - N/A   Clear
6:56 AM 7.0 °F - 3.0 °F 84% 30.19 in 10.0 mi Calm Calm - N/A   Clear
7:56 AM 8.6 °F - 3.2 °F 79% 30.09 in 10.0 mi Calm Calm - N/A   Clear
8:56 AM 12.2 °F - 8.6 °F 85% 30.07 in 10.0 mi Calm Calm - N/A   Clear
9:56 AM 23.0 °F 15.8 °F 19.0 °F 85% 30.14 in 10.0 mi SSW 5.8 mph - N/A   Clear
10:56 AM 26.1 °F 14.5 °F 19.9 °F 78% 30.08 in 10.0 mi South 13.8 mph - N/A   Clear
11:56 AM 28.0 °F 20.0 °F 19.0 °F 69% 30.03 in 10.0 mi SW 8.1 mph - N/A   Clear
12:56 PM 30.2 °F 21.9 °F 19.4 °F 64% 29.91 in 10.0 mi SSW 9.2 mph - N/A   Clear
1:56 PM 34.0 °F 28.8 °F 17.1 °F 50% 29.92 in 10.0 mi SW 5.8 mph - N/A   Clear
2:56 PM 35.1 °F 26.9 °F 16.0 °F 46% 29.90 in 10.0 mi South 11.5 mph - N/A   Clear
3:56 PM 32.0 °F 21.6 °F 17.1 °F 54% 29.86 in 10.0 mi South 15.0 mph - N/A   Clear
4:56 PM 28.9 °F 20.4 °F 19.0 °F 67% 29.85 in 10.0 mi South 9.2 mph - N/A   Clear
5:56 PM 27.0 °F 16.7 °F 18.0 °F 69% 29.83 in 10.0 mi South 11.5 mph - N/A   Clear
6:56 PM 26.1 °F 14.0 °F 18.0 °F 71% 29.83 in 10.0 mi South 15.0 mph - N/A   Clear
7:56 PM 24.1 °F 13.1 °F 17.1 °F 75% 29.82 in 10.0 mi South 11.5 mph - N/A   Clear
8:56 PM 24.1 °F 13.1 °F 15.1 °F 69% 29.80 in 10.0 mi SSW 11.5 mph - N/A   Clear
9:56 PM 21.9 °F 11.7 °F 14.0 °F 72% 29.78 in 10.0 mi South 9.2 mph - N/A   Clear
10:56 PM 21.9 °F 14.5 °F 14.0 °F 72% 29.75 in 10.0 mi SSW 5.8 mph - N/A   Clear
11:56 PM 21.0 °F 11.4 °F 14.0 °F 74% 29.71 in 10.0 mi South 8.1 mph - N/A   Clear