Weather History for Spearfish, SD

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Monday, December 31, 2012

  Actual Average (KEFC) Record (KEFC)
Temperature  
Mean Temperature 18 °F -  
Max Temperature 28 °F 31 °F 55 °F (1953)
Min Temperature 8 °F 9 °F -24 °F (1967)
Degree Days  
Heating Degree Days 47    
Moisture  
Dew Point 8 °F    
Average Humidity 68    
Maximum Humidity 80    
Minimum Humidity 50    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 4 mph (WSW)    
Max Wind Speed 10 mph    
Max Gust Speed -    
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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Astronomy

Dec. 31, 2012 Rise Set
Actual Time 8:31 AM CST 5:25 PM CST
Civil Twilight 7:58 AM CST 5:58 PM CST
Nautical Twilight 7:21 AM CST 6:35 PM CST
Astronomical Twilight 6:46 AM CST 7:10 PM CST
Moon 9:07 PM CST (12/31) 10:06 AM CST (12/31)
Length of Visible Light 10h 00m
Length of Day
8h 54m
Waning Gibbous, 90% of the Moon is Illuminated
Dec 31
Waning Gibbous
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 15.8 °F 6.1 °F 8.6 °F 73% 30.02 in 10.0 mi SSW 6.9 mph - N/A   Clear
12:35 AM 14.0 °F 1.2 °F 6.8 °F 73% 30.02 in 10.0 mi SSW 10.4 mph - N/A   Clear
12:55 AM 14.0 °F - 5.0 °F 67% 30.02 in 10.0 mi Calm Calm - N/A   Clear
1:35 AM 12.2 °F 1.7 °F 5.0 °F 73% 30.03 in 10.0 mi SSW 6.9 mph - N/A   Clear
1:55 AM 12.2 °F 1.7 °F 5.0 °F 73% 30.03 in 10.0 mi SSW 6.9 mph - N/A   Clear
2:15 AM 12.2 °F 0.7 °F 5.0 °F 73% 30.03 in 10.0 mi SSW 8.1 mph - N/A   Clear
2:35 AM 10.4 °F -0.4 °F 5.0 °F 79% 30.03 in 10.0 mi SSW 6.9 mph - N/A   Clear
2:55 AM 14.0 °F - 6.8 °F 73% 30.03 in 10.0 mi Calm Calm - N/A   Clear
3:15 AM 12.2 °F - 3.2 °F 67% 30.03 in 10.0 mi Calm Calm - N/A   Clear
3:35 AM 12.2 °F - 5.0 °F 73% 30.03 in 10.0 mi Calm Calm - N/A   Clear
3:55 AM 10.4 °F -1.5 °F 3.2 °F 73% 30.03 in 10.0 mi SSW 8.1 mph - N/A   Clear
4:15 AM 10.4 °F 4.0 °F 3.2 °F 73% 30.03 in 10.0 mi West 3.5 mph - N/A   Clear
4:35 AM 10.4 °F - 3.2 °F 73% 30.03 in 10.0 mi Calm Calm - N/A   Clear
4:55 AM 10.4 °F -2.4 °F 3.2 °F 73% 30.02 in 10.0 mi South 9.2 mph - N/A   Clear
5:35 AM 10.4 °F - 3.2 °F 73% 30.01 in 10.0 mi Calm Calm - N/A   Clear
5:55 AM 10.4 °F 4.0 °F 5.0 °F 79% 30.00 in 10.0 mi South 3.5 mph - N/A   Clear
6:35 AM 8.6 °F 2.0 °F 1.4 °F 73% 30.00 in 10.0 mi West 3.5 mph - N/A   Clear
6:55 AM 10.4 °F 4.0 °F 1.4 °F 67% 30.01 in 10.0 mi South 3.5 mph - N/A   Clear
7:15 AM 8.6 °F 0.1 °F 3.2 °F 79% 30.01 in 10.0 mi SW 4.6 mph - N/A   Clear
7:35 AM 10.4 °F - 5.0 °F 79% 30.01 in 10.0 mi Calm Calm - N/A   Clear
7:55 AM 10.4 °F - 3.2 °F 73% 30.01 in 10.0 mi Calm Calm - N/A   Clear
8:15 AM 8.6 °F 0.1 °F 3.2 °F 79% 30.01 in 10.0 mi South 4.6 mph - N/A   Clear
8:35 AM 8.6 °F -3.7 °F 1.4 °F 73% 30.01 in 10.0 mi South 8.1 mph - N/A   Clear
8:55 AM 8.6 °F 2.0 °F 1.4 °F 73% 30.01 in 10.0 mi WNW 3.5 mph - N/A   Clear
9:15 AM 10.4 °F 4.0 °F 3.2 °F 73% 30.01 in 10.0 mi SSW 3.5 mph - N/A   Clear
9:35 AM 10.4 °F - 3.2 °F 73% 30.02 in 10.0 mi Calm Calm - N/A   Clear
9:55 AM 14.0 °F - 3.2 °F 62% 30.02 in 10.0 mi Calm Calm - N/A   Clear
10:15 AM 15.8 °F - 5.0 °F 62% 30.02 in 10.0 mi Calm Calm - N/A   Clear
10:35 AM 15.8 °F - 5.0 °F 62% 30.02 in 10.0 mi Calm Calm - N/A   Clear
10:55 AM 17.6 °F - 8.6 °F 68% 30.02 in 10.0 mi Calm Calm - N/A   Clear
11:15 AM 23.0 °F - 8.6 °F 54% 30.01 in 10.0 mi Calm Calm - N/A   Clear
11:35 AM 24.8 °F - 8.6 °F 50% 30.01 in 10.0 mi Calm Calm - N/A   Clear
11:55 AM 24.8 °F - 8.6 °F 50% 30.00 in 10.0 mi Calm Calm - N/A   Clear
12:35 PM 26.6 °F - 12.2 °F 55% 29.98 in 10.0 mi Calm Calm - N/A   Clear
1:15 PM 28.4 °F 21.2 °F 14.0 °F 55% 29.97 in 10.0 mi NW 6.9 mph - N/A   Clear
1:35 PM 28.4 °F 22.2 °F 12.2 °F 51% 29.96 in 10.0 mi NW 5.8 mph - N/A   Clear
1:55 PM 28.4 °F 22.2 °F 14.0 °F 55% 29.95 in 10.0 mi NNW 5.8 mph - N/A   Clear
2:15 PM 28.4 °F 20.4 °F 14.0 °F 55% 29.95 in 10.0 mi NNW 8.1 mph - N/A   Clear
2:35 PM 28.4 °F 21.2 °F 14.0 °F 55% 29.96 in 10.0 mi NW 6.9 mph - N/A   Clear
2:55 PM 28.4 °F 21.2 °F 14.0 °F 55% 29.96 in 10.0 mi NW 6.9 mph - N/A   Clear
3:15 PM 26.6 °F 21.2 °F 15.8 °F 64% 29.97 in 10.0 mi NW 4.6 mph - N/A   Clear
3:35 PM 26.6 °F 20.0 °F 14.0 °F 59% 29.97 in 10.0 mi NW 5.8 mph - N/A   Clear
3:55 PM 24.8 °F 20.5 °F 14.0 °F 64% 29.98 in 10.0 mi NE 3.5 mph - N/A   Clear
4:15 PM 23.0 °F 17.0 °F 14.0 °F 68% 29.98 in 10.0 mi ENE 4.6 mph - N/A   Clear
4:35 PM 23.0 °F 18.4 °F 10.4 °F 59% 29.98 in 10.0 mi SSE 3.5 mph - N/A   Clear
4:55 PM 21.2 °F - 10.4 °F 63% 29.99 in 10.0 mi Calm Calm - N/A   Clear
5:15 PM 21.2 °F - 10.4 °F 63% 29.99 in 10.0 mi Calm Calm - N/A   Clear
5:35 PM 19.4 °F - 10.4 °F 68% 29.99 in 10.0 mi Calm Calm - N/A   Clear
5:55 PM 17.6 °F 10.7 °F 10.4 °F 73% 29.99 in 10.0 mi SSW 4.6 mph - N/A   Clear
6:15 PM 17.6 °F 10.7 °F 10.4 °F 73% 29.99 in 10.0 mi SW 4.6 mph - N/A   Clear
6:35 PM 17.6 °F 7.3 °F 10.4 °F 73% 29.98 in 10.0 mi SSW 8.1 mph - N/A   Mostly Cloudy
6:55 PM 17.6 °F 7.3 °F 10.4 °F 73% 29.98 in 10.0 mi SSW 8.1 mph - N/A   Mostly Cloudy
7:15 PM 19.4 °F 12.8 °F 12.2 °F 74% 29.98 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy
7:35 PM 17.6 °F - 10.4 °F 73% 29.98 in 10.0 mi Calm Calm - N/A   Overcast
7:55 PM 17.6 °F 12.3 °F 10.4 °F 73% 29.99 in 10.0 mi ENE 3.5 mph - N/A   Overcast
8:15 PM 19.4 °F - 12.2 °F 74% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
8:35 PM 21.2 °F - 12.2 °F 68% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
8:55 PM 19.4 °F - 14.0 °F 80% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
9:15 PM 19.4 °F - 14.0 °F 80% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
9:35 PM 17.6 °F - 12.2 °F 79% 29.99 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:55 PM 17.6 °F 12.3 °F 10.4 °F 73% 29.99 in 10.0 mi SW 3.5 mph - N/A   Clear
10:15 PM 15.8 °F 8.6 °F 10.4 °F 79% 30.00 in 10.0 mi SW 4.6 mph - N/A   Clear
10:35 PM 17.6 °F 10.7 °F 10.4 °F 73% 30.00 in 10.0 mi SW 4.6 mph - N/A   Clear
10:55 PM 17.6 °F 12.3 °F 8.6 °F 68% 30.01 in 10.0 mi WSW 3.5 mph - N/A   Clear
11:15 PM 19.4 °F 11.5 °F 8.6 °F 63% 30.01 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
11:35 PM 19.4 °F 11.5 °F 8.6 °F 63% 30.01 in 10.0 mi West 5.8 mph - N/A   Clear
11:55 PM 19.4 °F 10.4 °F 8.6 °F 63% 30.02 in 10.0 mi West 6.9 mph - N/A   Clear