Spearfish, SD

7:54 PM CST on January 21, 2017 (GMT -0600)
Spearfish

Weather History for KSPF - December, 2011

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Tuesday, December 20, 2011

  Actual Average (KEFC) Record (KEFC)
Temperature  
Mean Temperature 36 °F -  
Max Temperature 50 °F 32 °F 64 °F (1979)
Min Temperature 23 °F 8 °F -22 °F (1990)
Degree Days  
Heating Degree Days 28    
Moisture  
Dew Point 18 °F    
Average Humidity 51    
Maximum Humidity 74    
Minimum Humidity 26    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.82 in    
Wind  
Wind Speed 5 mph (West)    
Max Wind Speed 18 mph    
Max Gust Speed 26 mph    
Visibility 10 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Dec. 20, 2011 Rise Set
Actual Time 8:27 AM CST 5:17 PM CST
Civil Twilight 7:54 AM CST 5:51 PM CST
Nautical Twilight 7:17 AM CST 6:28 PM CST
Astronomical Twilight 6:41 AM CST 7:03 PM CST
Moon 3:46 AM CST (12/20) 1:59 PM CST (12/20)
Length of Visible Light 9h 56m
Length of Day
8h 49m
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
12:15 AM 23.0 °F - 14.0 °F 68% 30.07 in 10.0 mi Calm Calm - N/A   Clear
12:35 AM 23.0 °F - 14.0 °F 68% 30.06 in 10.0 mi Calm Calm - N/A   Clear
12:55 AM 23.0 °F - 14.0 °F 68% 30.04 in 10.0 mi Calm Calm - N/A   Clear
1:15 AM 24.8 °F - 14.0 °F 64% 30.03 in 10.0 mi Calm Calm - N/A   Clear
1:35 AM 24.8 °F 20.5 °F 15.8 °F 69% 30.01 in 10.0 mi SSE 3.5 mph - N/A   Clear
1:55 AM 23.0 °F 18.4 °F 14.0 °F 68% 29.99 in 10.0 mi South 3.5 mph - N/A   Clear
2:15 AM 28.4 °F 24.6 °F 15.8 °F 59% 29.98 in 10.0 mi North 3.5 mph - N/A   Clear
2:35 AM 30.2 °F 23.4 °F 15.8 °F 55% 29.98 in 10.0 mi WNW 6.9 mph - N/A   Clear
2:55 AM 32.0 °F - 17.6 °F 55% 29.97 in 10.0 mi Calm Calm - N/A   Clear
3:15 AM 26.6 °F 21.2 °F 15.8 °F 64% 29.96 in 10.0 mi SE 4.6 mph - N/A   Clear
3:35 AM 28.4 °F 24.6 °F 17.6 °F 64% 29.94 in 10.0 mi North 3.5 mph - N/A   Clear
3:55 AM 32.0 °F 25.6 °F 17.6 °F 55% 29.93 in 10.0 mi North 6.9 mph - N/A   Clear
4:15 AM 32.0 °F 28.7 °F 19.4 °F 60% 29.92 in 10.0 mi WNW 3.5 mph - N/A   Clear
4:35 AM 33.8 °F 30.8 °F 19.4 °F 56% 29.91 in 10.0 mi North 3.5 mph - N/A   Clear
4:55 AM 28.4 °F - 17.6 °F 64% 29.91 in 10.0 mi Calm Calm - N/A   Clear
5:15 AM 28.4 °F 22.2 °F 17.6 °F 64% 29.89 in 10.0 mi SSE 5.8 mph - N/A   Clear
5:35 AM 26.6 °F - 17.6 °F 69% 29.88 in 10.0 mi Calm Calm - N/A   Clear
5:55 AM 28.4 °F - 17.6 °F 64% 29.88 in 10.0 mi Calm Calm - N/A   Clear
6:35 AM 28.4 °F 23.3 °F 17.6 °F 64% 29.88 in 10.0 mi SSE 4.6 mph - N/A   Clear
6:55 AM 28.4 °F 22.2 °F 17.6 °F 64% 29.87 in 10.0 mi South 5.8 mph - N/A   Clear
7:15 AM 24.8 °F - 17.6 °F 74% 29.86 in 10.0 mi Calm Calm - N/A   Clear
7:35 AM 26.6 °F - 17.6 °F 69% 29.85 in 10.0 mi Calm Calm - N/A   Clear
8:15 AM 28.4 °F - 17.6 °F 64% 29.84 in 10.0 mi Calm Calm - N/A   Clear
8:35 AM 28.4 °F - 17.6 °F 64% 29.83 in 10.0 mi Calm Calm - N/A   Clear
8:55 AM 32.0 °F - 17.6 °F 55% 29.82 in 10.0 mi Calm Calm - N/A   Clear
9:15 AM 32.0 °F 28.7 °F 19.4 °F 60% 29.81 in 10.0 mi SE 3.5 mph - N/A   Clear
9:35 AM 32.0 °F - 19.4 °F 60% 29.80 in 10.0 mi Calm Calm - N/A   Clear
9:55 AM 35.6 °F - 24.8 °F 65% 29.80 in 10.0 mi Calm Calm - N/A   Clear
10:35 AM 42.8 °F 38.6 °F 19.4 °F 39% 29.81 in 10.0 mi WNW 6.9 mph - N/A   Clear
10:55 AM 44.6 °F 40.2 °F 17.6 °F 34% 29.80 in 10.0 mi West 8.1 mph - N/A   Clear
11:35 AM 48.2 °F - 15.8 °F 27% 29.78 in 10.0 mi West 6.9 mph - N/A   Clear
11:55 AM 48.2 °F - 15.8 °F 27% 29.77 in 10.0 mi WNW 5.8 mph - N/A   Clear
12:15 PM 48.2 °F - 15.8 °F 27% 29.76 in 10.0 mi WNW 11.5 mph 19.6 mph N/A   Clear
12:35 PM 50.0 °F - 15.8 °F 26% 29.75 in 10.0 mi WNW 11.5 mph 16.1 mph N/A   Clear
1:15 PM 50.0 °F - 17.6 °F 28% 29.72 in 10.0 mi West 15.0 mph 19.6 mph N/A   Clear
1:35 PM 50.0 °F - 17.6 °F 28% 29.72 in 10.0 mi West 15.0 mph 19.6 mph N/A   Clear
1:55 PM 48.2 °F - 17.6 °F 30% 29.71 in 10.0 mi WNW 12.7 mph 19.6 mph N/A   Clear
2:15 PM 50.0 °F - 17.6 °F 28% 29.70 in 10.0 mi WNW 12.7 mph 21.9 mph N/A   Clear
2:35 PM 50.0 °F - 17.6 °F 28% 29.69 in 10.0 mi WNW 15.0 mph 20.7 mph N/A   Clear
2:55 PM 48.2 °F - 17.6 °F 30% 29.69 in 10.0 mi WNW 17.3 mph 24.2 mph N/A   Clear
3:15 PM 48.2 °F - 17.6 °F 30% 29.69 in 10.0 mi West 18.4 mph 25.3 mph N/A   Clear
3:35 PM 48.2 °F - 19.4 °F 32% 29.69 in 10.0 mi WNW 15.0 mph 26.5 mph N/A   Clear
3:55 PM 46.4 °F 39.5 °F 19.4 °F 34% 29.70 in 10.0 mi WNW 17.3 mph 25.3 mph N/A   Clear
4:15 PM 44.6 °F 38.1 °F 19.4 °F 37% 29.70 in 10.0 mi WNW 13.8 mph - N/A   Clear
4:35 PM 44.6 °F 38.8 °F 19.4 °F 37% 29.70 in 10.0 mi WNW 11.5 mph 18.4 mph N/A   Clear
5:35 PM 39.2 °F 34.2 °F 19.4 °F 45% 29.70 in 10.0 mi West 6.9 mph - N/A   Clear
6:15 PM 37.4 °F 32.8 °F 19.4 °F 48% 29.70 in 10.0 mi West 5.8 mph - N/A   Clear
6:35 PM 37.4 °F 32.1 °F 19.4 °F 48% 29.70 in 10.0 mi West 6.9 mph - N/A   Clear
6:55 PM 39.2 °F 32.5 °F 21.2 °F 49% 29.70 in 10.0 mi West 10.4 mph 16.1 mph N/A   Clear
7:15 PM 41.0 °F 34.3 °F 23.0 °F 49% 29.70 in 10.0 mi West 11.5 mph 16.1 mph N/A   Clear
7:35 PM 39.2 °F 32.5 °F 23.0 °F 52% 29.70 in 10.0 mi West 10.4 mph - N/A   Clear
7:55 PM 39.2 °F 33.0 °F 23.0 °F 52% 29.70 in 10.0 mi West 9.2 mph - N/A   Clear
8:15 PM 39.2 °F 32.0 °F 23.0 °F 52% 29.70 in 10.0 mi West 11.5 mph 18.4 mph N/A   Clear
8:55 PM 39.2 °F 31.6 °F 23.0 °F 52% 29.70 in 10.0 mi West 12.7 mph 18.4 mph N/A   Clear
9:15 PM 39.2 °F 32.5 °F 23.0 °F 52% 29.70 in 10.0 mi West 10.4 mph - N/A   Clear
9:35 PM 39.2 °F 32.0 °F 24.8 °F 56% 29.69 in 10.0 mi West 11.5 mph - N/A   Clear
9:55 PM 39.2 °F 32.5 °F 24.8 °F 56% 29.69 in 10.0 mi West 10.4 mph - N/A   Clear
10:15 PM 39.2 °F 31.6 °F 24.8 °F 56% 29.69 in 10.0 mi West 12.7 mph - N/A   Partly Cloudy
10:55 PM 41.0 °F 32.5 °F 24.8 °F 53% 29.69 in 10.0 mi WNW 17.3 mph 24.2 mph N/A   Overcast
11:15 PM 39.2 °F 31.2 °F 24.8 °F 56% 29.68 in 10.0 mi WNW 13.8 mph 25.3 mph N/A   Overcast
11:55 PM 39.2 °F 30.8 °F 24.8 °F 56% 29.69 in 10.0 mi West 15.0 mph 20.7 mph N/A   Overcast