Weather History for Spearfish, SD

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Tuesday, December 13, 2011

  Actual Average (KEFC) Record (KEFC)
Temperature  
Mean Temperature 17 °F -  
Max Temperature 19 °F 39 °F 64 °F (1988)
Min Temperature 15 °F 15 °F -12 °F (1972)
Degree Days  
Heating Degree Days 48    
Moisture  
Dew Point 16 °F    
Average Humidity 96    
Maximum Humidity 100    
Minimum Humidity 93    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 2 mph (ESE)    
Max Wind Speed 5 mph    
Max Gust Speed -    
Visibility 3 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. 13, 2011 Rise Set
Actual Time 8:22 AM CST 5:15 PM CST
Civil Twilight 7:49 AM CST 5:48 PM CST
Nautical Twilight 7:12 AM CST 6:25 PM CST
Astronomical Twilight 6:37 AM CST 7:01 PM CST
Moon 8:37 PM CST (12/13) 10:30 AM CST (12/13)
Length of Visible Light 9h 59m
Length of Day
8h 52m
Waning Gibbous, 90% of the Moon is Illuminated
Dec 13
Waning Gibbous
Dec 17
Last Quarter
Dec 24
New
Jan 1
First Quarter
Jan 9
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 19.4 °F 12.8 °F 17.6 °F 93% 30.06 in 0.8 mi ESE 4.6 mph - N/A   Overcast
12:35 AM 17.6 °F - 17.6 °F 100% 30.06 in 1.2 mi Calm Calm - N/A   Overcast
12:55 AM 19.4 °F 12.8 °F 17.6 °F 93% 30.05 in 0.8 mi East 4.6 mph - N/A   Overcast
1:15 AM 17.6 °F - 17.6 °F 100% 30.04 in 1.5 mi Calm Calm - N/A   Overcast
1:35 AM 17.6 °F - 17.6 °F 100% 30.03 in 2.5 mi Calm Calm - N/A   Overcast
1:55 AM 17.6 °F 12.3 °F 17.6 °F 100% 30.02 in 2.0 mi ENE 3.5 mph - N/A   Overcast
2:35 AM 17.6 °F 12.3 °F 17.6 °F 100% 30.01 in 3.0 mi ESE 3.5 mph - N/A   Overcast
2:55 AM 17.6 °F - 17.6 °F 100% 30.01 in 4.0 mi Calm Calm - N/A   Overcast
3:15 AM 17.6 °F - 15.8 °F 93% 30.01 in 3.0 mi Calm Calm - N/A   Overcast
3:35 AM 17.6 °F - 15.8 °F 93% 30.01 in 4.0 mi Calm Calm - N/A   Overcast
3:55 AM 17.6 °F - 17.6 °F 100% 30.00 in 3.0 mi Calm Calm - N/A   Overcast
4:15 AM 17.6 °F - 15.8 °F 93% 30.00 in 2.5 mi Calm Calm - N/A   Overcast
4:35 AM 17.6 °F - 17.6 °F 100% 29.99 in 4.0 mi Calm Calm - N/A   Mostly Cloudy
4:55 AM 17.6 °F - 17.6 °F 100% 29.99 in 5.0 mi Calm Calm - N/A   Mostly Cloudy
5:15 AM 17.6 °F - 15.8 °F 93% 29.99 in 5.0 mi Calm Calm - N/A   Overcast
5:35 AM 17.6 °F - 15.8 °F 93% 29.98 in 5.0 mi Calm Calm - N/A   Overcast
6:15 AM 15.8 °F - 15.8 °F 100% 29.97 in 5.0 mi Calm Calm - N/A   Overcast
6:35 AM 17.6 °F - 15.8 °F 93% 29.97 in 4.0 mi Calm Calm - N/A   Overcast
7:15 AM 15.8 °F - 14.0 °F 93% 29.96 in 5.0 mi Calm Calm - N/A   Overcast
7:35 AM 15.8 °F - 14.0 °F 93% 29.96 in 0.8 mi Calm Calm - N/A   Overcast
7:55 AM 15.8 °F 10.2 °F 14.0 °F 93% 29.96 in 0.8 mi ESE 3.5 mph - N/A   Overcast