Weather History for Spearfish, SD

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Friday, December 28, 2012

  Actual Average (KEFC) Record (KEFC)
Temperature  
Mean Temperature 14 °F -  
Max Temperature 28 °F 33 °F 57 °F (1965)
Min Temperature 1 °F 9 °F -18 °F (1968)
Degree Days  
Heating Degree Days 50    
Moisture  
Dew Point 11 °F    
Average Humidity 71    
Maximum Humidity 92    
Minimum Humidity 59    
Precipitation  
Precipitation 0.02 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.92 in    
Wind  
Wind Speed 7 mph (West)    
Max Wind Speed 18 mph    
Max Gust Speed 22 mph    
Visibility 10 miles    
Events Snow    
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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Date:

Astronomy

Dec. 28, 2012 Rise Set
Actual Time 8:31 AM CST 5:23 PM CST
Civil Twilight 7:57 AM CST 5:56 PM CST
Nautical Twilight 7:20 AM CST 6:33 PM CST
Astronomical Twilight 6:45 AM CST 7:08 PM CST
Moon 6:04 PM CST (12/28) 8:24 AM CST (12/28)
Length of Visible Light 9h 58m
Length of Day
8h 51m
Full, 100% of the Moon is Illuminated
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

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 1.4 °F - -2.2 °F 85% 29.90 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:35 AM 3.2 °F - -0.4 °F 85% 29.90 in 10.0 mi Calm Calm - N/A   Overcast
12:55 AM 1.4 °F - -2.2 °F 85% 29.89 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:15 AM 1.4 °F - -0.4 °F 92% 29.89 in 10.0 mi Calm Calm - N/A   Partly Cloudy
1:35 AM 1.4 °F -12.5 °F -0.4 °F 92% 29.89 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
2:15 AM 6.8 °F -6.9 °F 1.4 °F 79% 29.89 in 10.0 mi West 9.2 mph - N/A   Scattered Clouds
2:35 AM 8.6 °F -3.7 °F 3.2 °F 79% 29.89 in 10.0 mi West 8.1 mph - N/A   Partly Cloudy
2:55 AM 8.6 °F -4.7 °F 1.4 °F 73% 29.89 in 10.0 mi West 9.2 mph - N/A   Clear
3:15 AM 8.6 °F -3.7 °F 1.4 °F 73% 29.89 in 10.0 mi West 8.1 mph - N/A   Clear
3:35 AM 8.6 °F -2.6 °F 1.4 °F 73% 29.89 in 10.0 mi West 6.9 mph - N/A   Clear
3:55 AM 6.8 °F -6.9 °F 1.4 °F 79% 29.89 in 10.0 mi West 9.2 mph - N/A   Partly Cloudy
4:15 AM 8.6 °F -3.7 °F 1.4 °F 73% 29.88 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
4:35 AM 8.6 °F -4.7 °F 1.4 °F 73% 29.88 in 10.0 mi West 9.2 mph - N/A   Mostly Cloudy
4:55 AM 10.4 °F -1.5 °F 5.0 °F 79% 29.88 in 10.0 mi West 8.1 mph - N/A   Overcast
5:15 AM 14.0 °F 3.9 °F 6.8 °F 73% 29.88 in 10.0 mi West 6.9 mph - N/A   Overcast
5:35 AM 14.0 °F 3.9 °F 6.8 °F 73% 29.88 in 10.0 mi WSW 6.9 mph - N/A   Overcast
5:55 AM 14.0 °F 5.1 °F 8.6 °F 79% 29.88 in 10.0 mi WSW 5.8 mph - N/A   Overcast
6:15 AM 14.0 °F 5.1 °F 6.8 °F 73% 29.88 in 10.0 mi West 5.8 mph - N/A   Mostly Cloudy
6:35 AM 12.2 °F 2.9 °F 6.8 °F 79% 29.88 in 10.0 mi West 5.8 mph - N/A   Scattered Clouds
6:55 AM 10.4 °F -0.4 °F 6.8 °F 85% 29.88 in 10.0 mi West 6.9 mph - N/A   Clear
7:15 AM 12.2 °F -1.0 °F 6.8 °F 79% 29.88 in 10.0 mi West 10.4 mph - N/A   Clear
7:35 AM 15.8 °F 4.2 °F 8.6 °F 73% 29.88 in 10.0 mi West 9.2 mph - N/A   Clear
7:55 AM 15.8 °F 3.4 °F 8.6 °F 73% 29.88 in 10.0 mi West 10.4 mph - N/A   Clear
8:35 AM 17.6 °F 8.2 °F 10.4 °F 73% 29.89 in 10.0 mi West 6.9 mph - N/A   Overcast
8:55 AM 19.4 °F 8.6 °F 10.4 °F 68% 29.90 in 10.0 mi West 9.2 mph - N/A   Overcast
9:15 AM 19.4 °F 7.9 °F 10.4 °F 68% 29.90 in 10.0 mi West 10.4 mph - N/A   Overcast
9:35 AM 19.4 °F 8.6 °F 12.2 °F 74% 29.90 in 10.0 mi West 9.2 mph - N/A   Overcast
9:55 AM 23.0 °F 13.1 °F 12.2 °F 63% 29.91 in 10.0 mi West 9.2 mph - N/A   Overcast
10:15 AM 23.0 °F 14.7 °F 12.2 °F 63% 29.92 in 10.0 mi West 6.9 mph - N/A   Overcast
10:35 AM 23.0 °F 15.8 °F 14.0 °F 68% 29.93 in 10.0 mi West 5.8 mph - N/A   Overcast
10:55 AM 23.0 °F 15.8 °F 14.0 °F 68% 29.93 in 10.0 mi West 5.8 mph - N/A   Mostly Cloudy
11:15 AM 24.8 °F 20.5 °F 14.0 °F 64% 29.92 in 10.0 mi West 3.5 mph - N/A   Mostly Cloudy
11:35 AM 26.6 °F 21.2 °F 14.0 °F 59% 29.92 in 10.0 mi WNW 4.6 mph - N/A   Mostly Cloudy
11:55 AM 26.6 °F 20.0 °F 14.0 °F 59% 29.91 in 10.0 mi NW 5.8 mph - N/A   Scattered Clouds
12:15 PM 26.6 °F 18.2 °F 15.8 °F 64% 29.91 in 10.0 mi NW 8.1 mph - N/A   Mostly Cloudy
12:35 PM 26.6 °F 17.5 °F 17.6 °F 69% 29.91 in 10.0 mi NNW 9.2 mph - N/A   Mostly Cloudy
12:55 PM 26.6 °F 15.2 °F 17.6 °F 69% 29.90 in 10.0 mi NW 13.8 mph - N/A   Mostly Cloudy
1:15 PM 26.6 °F 16.2 °F 19.4 °F 74% 29.90 in 10.0 mi WNW 11.5 mph 18.4 mph N/A   Mostly Cloudy
1:35 PM 28.4 °F 19.1 °F 19.4 °F 69% 29.90 in 10.0 mi WNW 10.4 mph - N/A   Overcast
1:55 PM 28.4 °F 16.6 °F 19.4 °F 69% 29.90 in 8.0 mi WNW 16.1 mph 19.6 mph 0.01 in Snow Light Snow
2:15 PM 26.6 °F 16.2 °F 19.4 °F 74% 29.90 in 4.0 mi WNW 11.5 mph 19.6 mph 0.01 in Snow Light Snow
2:35 PM 26.6 °F 15.2 °F 17.6 °F 69% 29.90 in 10.0 mi WNW 13.8 mph 19.6 mph 0.01 in   Scattered Clouds
3:15 PM 26.6 °F 15.2 °F 17.6 °F 69% 29.91 in 10.0 mi WNW 13.8 mph 18.4 mph N/A   Overcast
3:35 PM 26.6 °F 14.3 °F 17.6 °F 69% 29.92 in 10.0 mi WNW 16.1 mph 20.7 mph N/A   Mostly Cloudy
3:55 PM 26.6 °F 15.2 °F 17.6 °F 69% 29.92 in 10.0 mi WNW 13.8 mph 20.7 mph N/A   Overcast
4:15 PM 26.6 °F 15.2 °F 17.6 °F 69% 29.93 in 10.0 mi WNW 13.8 mph 21.9 mph N/A   Overcast
4:35 PM 26.6 °F 15.2 °F 17.6 °F 69% 29.94 in 10.0 mi WNW 13.8 mph - N/A   Overcast
5:15 PM 26.6 °F 15.7 °F 17.6 °F 69% 29.94 in 10.0 mi West 12.7 mph 18.4 mph N/A   Overcast
5:35 PM 26.6 °F 14.7 °F 15.8 °F 64% 29.94 in 10.0 mi West 15.0 mph 19.6 mph N/A   Overcast
5:55 PM 26.6 °F 14.7 °F 15.8 °F 64% 29.94 in 10.0 mi West 15.0 mph 19.6 mph N/A   Overcast
6:15 PM 26.6 °F 13.4 °F 15.8 °F 64% 29.95 in 10.0 mi WNW 18.4 mph - N/A   Overcast
6:55 PM 26.6 °F 15.7 °F 15.8 °F 64% 29.96 in 10.0 mi West 12.7 mph 18.4 mph N/A   Overcast
7:15 PM 26.6 °F 15.2 °F 15.8 °F 64% 29.97 in 10.0 mi WNW 13.8 mph 19.6 mph N/A   Overcast
7:35 PM 26.6 °F 14.3 °F 15.8 °F 64% 29.97 in 10.0 mi West 16.1 mph 20.7 mph N/A   Overcast
7:55 PM 26.6 °F 15.2 °F 15.8 °F 64% 29.97 in 10.0 mi West 13.8 mph 19.6 mph N/A   Overcast
8:35 PM 26.6 °F 15.2 °F 14.0 °F 59% 29.97 in 10.0 mi West 13.8 mph 20.7 mph N/A   Overcast
8:55 PM 26.6 °F 16.2 °F 15.8 °F 64% 29.97 in 10.0 mi West 11.5 mph - N/A   Overcast
9:15 PM 26.6 °F 15.2 °F 15.8 °F 64% 29.97 in 10.0 mi West 13.8 mph - N/A   Overcast
9:35 PM 24.8 °F 13.4 °F 14.0 °F 64% 29.98 in 10.0 mi West 12.7 mph - N/A   Scattered Clouds
9:55 PM 24.8 °F 14.0 °F 14.0 °F 64% 29.98 in 10.0 mi West 11.5 mph - N/A   Clear
10:15 PM 23.0 °F 13.1 °F 14.0 °F 68% 29.98 in 10.0 mi West 9.2 mph - N/A   Clear
10:35 PM 23.0 °F 11.7 °F 14.0 °F 68% 29.98 in 10.0 mi West 11.5 mph - N/A   Clear
10:55 PM 23.0 °F 11.7 °F 14.0 °F 68% 29.98 in 10.0 mi West 11.5 mph - N/A   Clear
11:15 PM 24.8 °F 13.4 °F 14.0 °F 64% 29.98 in 10.0 mi West 12.7 mph - N/A   Clear
11:35 PM 23.0 °F 12.4 °F 12.2 °F 63% 29.98 in 10.0 mi West 10.4 mph - N/A   Clear
11:55 PM 23.0 °F 11.7 °F 12.2 °F 63% 29.98 in 10.0 mi West 11.5 mph - N/A   Clear