Weather History for Spearfish, SD

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Sunday, August 17, 2014

  Actual Average (KEFC) Record (KEFC)
Temperature  
Mean Temperature 68 °F -  
Max Temperature 80 °F 88 °F 102 °F (1970)
Min Temperature 55 °F 54 °F 45 °F (1959)
Cooling Degree Days 2    
Growing Degree Days 18 (Base 50)    
Moisture  
Dew Point 59 °F    
Average Humidity 74    
Maximum Humidity 94    
Minimum Humidity 42    
Precipitation  
Precipitation 0.03 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.06 in    
Wind  
Wind Speed 7 mph (East)    
Max Wind Speed 17 mph    
Max Gust Speed 22 mph    
Visibility 10 miles    
Events Rain , Thunderstorm    
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

Aug. 17, 2014 Rise Set
Actual Time 7:00 AM CDT 8:57 PM CDT
Civil Twilight 6:28 AM CDT 9:28 PM CDT
Nautical Twilight 5:50 AM CDT 10:06 PM CDT
Astronomical Twilight 5:08 AM CDT 10:48 PM CDT
Moon 12:26 AM CDT (8/17) 3:07 PM CDT (8/17)
Length of Visible Light 14h 59m
Length of Day
13h 56m
Waning Gibbous, 48% of the Moon is Illuminated
Aug 17
Waning Gibbous
Aug 25
New
Sep 2
First Quarter
Sep 8
Full
Sep 15
Last Quarter

Hourly Weather History & Observations

Time (CDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 62.6 °F - 55.4 °F 77% 30.08 in 10.0 mi ESE 10.4 mph - N/A   Clear
12:35 AM 66.2 °F - 55.4 °F 68% 30.08 in 10.0 mi East 11.5 mph - N/A   Clear
12:55 AM 66.2 °F - 55.4 °F 68% 30.08 in 10.0 mi ESE 12.7 mph - N/A   Clear
1:15 AM 64.4 °F - 55.4 °F 73% 30.07 in 10.0 mi East 10.4 mph - N/A   Clear
1:35 AM 68.0 °F - 55.4 °F 64% 30.07 in 10.0 mi SE 10.4 mph 18.4 mph N/A   Clear
1:55 AM 69.8 °F - 55.4 °F 60% 30.06 in 10.0 mi SE 6.9 mph - N/A   Clear
2:15 AM 68.0 °F - 55.4 °F 64% 30.05 in 10.0 mi ESE 4.6 mph - N/A   Clear
2:35 AM 68.0 °F - 57.2 °F 68% 30.05 in 10.0 mi ENE 6.9 mph - N/A   Clear
2:55 AM 68.0 °F - 55.4 °F 64% 30.05 in 10.0 mi NNW 4.6 mph - N/A   Clear
3:15 AM 71.6 °F - 55.4 °F 57% 30.06 in 9.0 mi Calm Calm - N/A   Clear
3:35 AM 64.4 °F - 55.4 °F 73% 30.07 in 10.0 mi West 5.8 mph - N/A   Clear
3:55 AM 62.6 °F - 55.4 °F 77% 30.07 in 10.0 mi WSW 5.8 mph - N/A   Clear
4:15 AM 62.6 °F - 55.4 °F 77% 30.06 in 10.0 mi WSW 3.5 mph - N/A   Clear
4:35 AM 60.8 °F - 55.4 °F 82% 30.06 in 10.0 mi SSW 4.6 mph - N/A   Clear
4:55 AM 60.8 °F - 55.4 °F 82% 30.06 in 10.0 mi South 3.5 mph - N/A   Clear
5:15 AM 59.0 °F - 55.4 °F 88% 30.06 in 10.0 mi WNW 4.6 mph - N/A   Clear
5:35 AM 59.0 °F - 55.4 °F 88% 30.07 in 10.0 mi Calm Calm - N/A   Clear
5:55 AM 59.0 °F - 55.4 °F 88% 30.07 in 10.0 mi SSW 3.5 mph - N/A   Clear
6:15 AM 57.2 °F - 53.6 °F 88% 30.07 in 10.0 mi SW 3.5 mph - N/A   Clear
6:35 AM 57.2 °F - 53.6 °F 88% 30.07 in 10.0 mi SSE 3.5 mph - N/A   Clear
6:55 AM 55.4 °F - 53.6 °F 94% 30.08 in 10.0 mi South 3.5 mph - N/A   Clear
7:15 AM 57.2 °F - 53.6 °F 88% 30.08 in 10.0 mi Calm Calm - N/A   Clear
7:35 AM 57.2 °F - 55.4 °F 94% 30.09 in 10.0 mi WNW 4.6 mph - N/A   Clear
7:55 AM 59.0 °F - 55.4 °F 88% 30.11 in 10.0 mi NW 4.6 mph - N/A   Clear
8:15 AM 62.6 °F - 59.0 °F 88% 30.12 in 10.0 mi NNE 3.5 mph - N/A   Clear
8:35 AM 62.6 °F - 59.0 °F 88% 30.12 in 10.0 mi NNE 6.9 mph - N/A   Scattered Clouds
8:55 AM 62.6 °F - 59.0 °F 88% 30.12 in 10.0 mi ENE 5.8 mph - N/A   Mostly Cloudy
9:15 AM 62.6 °F - 60.8 °F 94% 30.12 in 10.0 mi East 9.2 mph - N/A   Overcast
9:35 AM 64.4 °F - 60.8 °F 88% 30.11 in 10.0 mi ESE 10.4 mph - N/A   Overcast
9:55 AM 64.4 °F - 60.8 °F 88% 30.10 in 10.0 mi ESE 15.0 mph - N/A   Overcast
10:15 AM 66.2 °F - 62.6 °F 88% 30.10 in 10.0 mi East 15.0 mph - N/A   Mostly Cloudy
10:35 AM 68.0 °F - 62.6 °F 83% 30.09 in 10.0 mi East 16.1 mph - N/A   Clear
11:15 AM 69.8 °F - 62.6 °F 78% 30.08 in 10.0 mi East 17.3 mph - N/A   Clear
11:35 AM 71.6 °F - 62.6 °F 73% 30.07 in 10.0 mi East 12.7 mph - N/A   Clear
11:55 AM 73.4 °F - 62.6 °F 69% 30.06 in 10.0 mi ESE 11.5 mph - N/A   Clear
12:15 PM 73.4 °F - 64.4 °F 73% 30.06 in 10.0 mi ENE 11.5 mph - N/A   Clear
12:35 PM 75.2 °F - 64.4 °F 69% 30.05 in 10.0 mi ENE 5.8 mph - N/A   Clear
12:55 PM 75.2 °F - 64.4 °F 69% 30.05 in 10.0 mi NE 6.9 mph - N/A   Clear
1:35 PM 77.0 °F - 64.4 °F 65% 30.05 in 10.0 mi WNW 3.5 mph - N/A   Clear
1:55 PM 77.0 °F - 64.4 °F 65% 30.05 in 10.0 mi NNE 6.9 mph - N/A   Partly Cloudy
2:15 PM 77.0 °F - 64.4 °F 65% 30.05 in 10.0 mi ESE 15.0 mph 18.4 mph N/A   Clear
2:35 PM 78.8 °F - 64.4 °F 61% 30.04 in 10.0 mi East 3.5 mph - N/A   Clear
3:15 PM 78.8 °F - 64.4 °F 61% 30.04 in 10.0 mi ESE 5.8 mph - N/A   Clear
3:35 PM 80.6 °F 81.8 °F 62.6 °F 54% 30.02 in 10.0 mi South 8.1 mph - N/A   Clear
3:55 PM 75.2 °F - 62.6 °F 65% 30.02 in 10.0 mi NNE 5.8 mph - N/A Rain , Thunderstorm Light Rain
4:15 PM 71.6 °F - 64.4 °F 78% 30.01 in 10.0 mi Calm Calm - 0.03 in Rain , Thunderstorm Rain
4:35 PM 77.0 °F - 62.6 °F 61% 30.00 in 10.0 mi Calm Calm - 0.03 in   Clear
4:55 PM 78.8 °F - 64.4 °F 61% 29.99 in 10.0 mi South 4.6 mph - 0.03 in   Clear
5:15 PM 80.6 °F 82.3 °F 64.4 °F 58% 29.99 in 10.0 mi SSE 5.8 mph - N/A   Clear
5:35 PM 80.6 °F 82.3 °F 64.4 °F 58% 29.98 in 10.0 mi East 3.5 mph - N/A   Partly Cloudy
5:55 PM 80.6 °F 82.7 °F 66.2 °F 61% 29.98 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:15 PM 80.6 °F 81.8 °F 62.6 °F 54% 29.98 in 10.0 mi NW 9.2 mph 16.1 mph N/A   Clear
6:35 PM 80.6 °F 80.8 °F 57.2 °F 45% 29.99 in 10.0 mi NNW 11.5 mph 21.9 mph N/A   Clear
6:55 PM 80.6 °F 80.5 °F 55.4 °F 42% 29.99 in 10.0 mi NNW 13.8 mph - N/A   Clear
7:15 PM 78.8 °F - 53.6 °F 42% 30.00 in 10.0 mi NNW 13.8 mph 21.9 mph N/A   Clear
7:35 PM 77.0 °F - 53.6 °F 44% 30.01 in 10.0 mi NNW 11.5 mph - N/A   Clear
7:55 PM 75.2 °F - 55.4 °F 50% 30.02 in 10.0 mi NE 15.0 mph - N/A   Scattered Clouds
8:15 PM 68.0 °F - 60.8 °F 78% 30.04 in 10.0 mi ENE 6.9 mph - N/A   Partly Cloudy
8:35 PM 66.2 °F - 59.0 °F 78% 30.04 in 10.0 mi East 5.8 mph - N/A   Clear
8:55 PM 64.4 °F - 59.0 °F 83% 30.05 in 10.0 mi Calm Calm - N/A   Clear
9:15 PM 64.4 °F - 59.0 °F 83% 30.06 in 10.0 mi Calm Calm - N/A   Clear
9:35 PM 62.6 °F - 59.0 °F 88% 30.07 in 10.0 mi SSE 3.5 mph - N/A   Clear
9:55 PM 62.6 °F - 59.0 °F 88% 30.07 in 10.0 mi SSW 3.5 mph - N/A   Clear
10:15 PM 62.6 °F - 59.0 °F 88% 30.07 in 10.0 mi Calm Calm - N/A   Clear
10:35 PM 62.6 °F - 59.0 °F 88% 30.07 in 10.0 mi Calm Calm - N/A   Clear
10:55 PM 64.4 °F - 59.0 °F 83% 30.06 in 10.0 mi Calm Calm - N/A   Clear
11:15 PM 62.6 °F - 57.2 °F 82% 30.06 in 10.0 mi Calm Calm - N/A   Clear
11:55 PM 62.6 °F - 55.4 °F 77% 30.06 in 10.0 mi Calm Calm - N/A   Clear