Weather History for Spearfish, SD

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Sunday, September 30, 2012

  Actual Average (KEFC) Record (KEFC)
Temperature  
Mean Temperature 65 °F -  
Max Temperature 77 °F 73 °F 94 °F (1980)
Min Temperature 53 °F 38 °F 22 °F (1958)
Growing Degree Days 15 (Base 50)    
Moisture  
Dew Point 36 °F    
Average Humidity 38    
Maximum Humidity 51    
Minimum Humidity 22    
Precipitation  
Precipitation 0.05 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.11 in    
Wind  
Wind Speed 8 mph (WNW)    
Max Wind Speed 18 mph    
Max Gust Speed 25 mph    
Visibility 10 miles    
Events Rain    
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

Sep. 30, 2012 Rise Set
Actual Time 7:52 AM CDT 7:36 PM CDT
Civil Twilight 7:23 AM CDT 8:05 PM CDT
Nautical Twilight 6:49 AM CDT 8:39 PM CDT
Astronomical Twilight 6:15 AM CDT 9:13 PM CDT
Moon 7:37 PM CDT (9/30) 8:28 AM CDT (9/30)
Length of Visible Light 12h 42m
Length of Day
11h 44m
Full, 100% of the Moon is Illuminated
Sep 30
Full
Oct 8
Last Quarter
Oct 15
New
Oct 21
First Quarter
Oct 29
Full

Hourly Weather History & Observations

Time (CDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 59.0 °F 37.4 °F 45% 30.07 in 10.0 mi West 9.2 mph - N/A   Clear
12:55 AM 59.0 °F 37.4 °F 45% 30.07 in 10.0 mi West 10.4 mph - N/A   Clear
1:15 AM 59.0 °F 37.4 °F 45% 30.07 in 10.0 mi West 9.2 mph - N/A   Clear
1:35 AM 59.0 °F 35.6 °F 42% 30.07 in 10.0 mi WSW 10.4 mph - N/A   Clear
1:55 AM 57.2 °F 35.6 °F 44% 30.07 in 10.0 mi West 8.1 mph - N/A   Clear
2:15 AM 59.0 °F 35.6 °F 42% 30.08 in 10.0 mi West 8.1 mph - N/A   Clear
2:35 AM 57.2 °F 35.6 °F 44% 30.08 in 10.0 mi West 9.2 mph - N/A   Clear
2:55 AM 57.2 °F 35.6 °F 44% 30.08 in 10.0 mi West 8.1 mph - N/A   Clear
3:15 AM 57.2 °F 35.6 °F 44% 30.08 in 10.0 mi West 9.2 mph - N/A   Clear
3:35 AM 57.2 °F 35.6 °F 44% 30.08 in 10.0 mi West 10.4 mph - N/A   Clear
3:55 AM 57.2 °F 35.6 °F 44% 30.08 in 10.0 mi West 9.2 mph - N/A   Clear
4:15 AM 55.4 °F 35.6 °F 47% 30.08 in 10.0 mi West 9.2 mph - N/A   Clear
4:35 AM 55.4 °F 35.6 °F 47% 30.08 in 10.0 mi West 9.2 mph - N/A   Clear
4:55 AM 55.4 °F 35.6 °F 47% 30.08 in 10.0 mi West 9.2 mph - N/A   Clear
5:15 AM 53.6 °F 35.6 °F 51% 30.09 in 10.0 mi West 4.6 mph - N/A   Clear
5:35 AM 53.6 °F 35.6 °F 51% 30.09 in 10.0 mi West 5.8 mph - N/A   Clear
5:55 AM 53.6 °F 35.6 °F 51% 30.09 in 10.0 mi West 5.8 mph - N/A   Clear
6:15 AM 53.6 °F 35.6 °F 51% 30.09 in 10.0 mi WSW 5.8 mph - N/A   Clear
6:35 AM 53.6 °F 35.6 °F 51% 30.09 in 10.0 mi West 8.1 mph - N/A   Clear
6:55 AM 53.6 °F 35.6 °F 51% 30.10 in 10.0 mi West 8.1 mph - N/A   Clear
7:15 AM 53.6 °F 33.8 °F 47% 30.10 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:35 AM 53.6 °F 35.6 °F 51% 30.10 in 10.0 mi WSW 4.6 mph - N/A   Mostly Cloudy
7:55 AM 53.6 °F 35.6 °F 51% 30.11 in 10.0 mi WSW 4.6 mph - N/A   Overcast
8:15 AM 53.6 °F 35.6 °F 51% 30.11 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:35 AM 55.4 °F 35.6 °F 47% 30.11 in 10.0 mi West 4.6 mph - N/A   Partly Cloudy
8:55 AM 55.4 °F 35.6 °F 47% 30.12 in 10.0 mi West 8.1 mph - N/A   Clear
9:15 AM 57.2 °F 35.6 °F 44% 30.12 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:35 AM 59.0 °F 35.6 °F 42% 30.13 in 10.0 mi WNW 4.6 mph - N/A   Mostly Cloudy
9:55 AM 59.0 °F 35.6 °F 42% 30.13 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
10:15 AM 62.6 °F 35.6 °F 37% 30.14 in 10.0 mi WSW 6.9 mph - N/A   Clear
10:35 AM 66.2 °F 35.6 °F 32% 30.14 in 10.0 mi WSW 6.9 mph - N/A   Clear
10:55 AM 68.0 °F 35.6 °F 30% 30.13 in 10.0 mi West 6.9 mph - N/A   Clear
11:15 AM 71.6 °F 35.6 °F 27% 30.13 in 10.0 mi NW 6.9 mph - N/A   Clear
11:35 AM 71.6 °F 35.6 °F 27% 30.12 in 10.0 mi NNW 6.9 mph - N/A   Clear
11:55 AM 71.6 °F 35.6 °F 27% 30.12 in 10.0 mi NW 8.1 mph - N/A   Clear
12:15 PM 73.4 °F 35.6 °F 25% 30.12 in 10.0 mi NNW 6.9 mph - N/A   Clear
12:35 PM 73.4 °F 35.6 °F 25% 30.12 in 10.0 mi NW 9.2 mph - N/A   Clear
12:55 PM 73.4 °F 35.6 °F 25% 30.12 in 10.0 mi WNW 9.2 mph - N/A   Clear
1:15 PM 73.4 °F 35.6 °F 25% 30.12 in 10.0 mi NNW 4.6 mph - N/A   Clear
1:35 PM 75.2 °F 35.6 °F 24% 30.11 in 10.0 mi WNW 9.2 mph - N/A   Clear
1:55 PM 75.2 °F 35.6 °F 24% 30.10 in 10.0 mi NNW 8.1 mph - N/A   Clear
2:15 PM 75.2 °F 35.6 °F 24% 30.10 in 10.0 mi West 10.4 mph - N/A   Clear
2:35 PM 75.2 °F 35.6 °F 24% 30.09 in 10.0 mi North 11.5 mph 17.3 mph N/A   Clear
2:55 PM 77.0 °F 35.6 °F 22% 30.08 in 10.0 mi North 9.2 mph 17.3 mph N/A   Clear
3:15 PM 75.2 °F 35.6 °F 24% 30.08 in 10.0 mi North 5.8 mph - N/A   Clear
3:35 PM 75.2 °F 35.6 °F 24% 30.09 in 10.0 mi NNW 11.5 mph 16.1 mph N/A   Clear
3:55 PM 71.6 °F 42.8 °F 35% 30.09 in 9.0 mi SW 4.6 mph - 0.03 in Rain Light Rain
4:15 PM 73.4 °F 41.0 °F 31% 30.07 in 10.0 mi SW 5.8 mph - N/A   Partly Cloudy
4:55 PM 71.6 °F 39.2 °F 31% 30.08 in 10.0 mi WNW 8.1 mph - 0.01 in   Scattered Clouds
5:15 PM 68.0 °F 41.0 °F 37% 30.08 in 9.0 mi NW 6.9 mph - 0.01 in Rain Light Rain
5:35 PM 69.8 °F 41.0 °F 35% 30.09 in 10.0 mi NW 12.7 mph - 0.01 in   Partly Cloudy
5:55 PM 71.6 °F 35.6 °F 27% 30.09 in 10.0 mi NW 18.4 mph 25.3 mph 0.01 in   Clear
6:15 PM 71.6 °F 32.0 °F 23% 30.10 in 10.0 mi NNW 17.3 mph 25.3 mph N/A   Clear
6:35 PM 68.0 °F 32.0 °F 26% 30.10 in 10.0 mi NW 17.3 mph 24.2 mph N/A   Partly Cloudy
6:55 PM 68.0 °F 33.8 °F 28% 30.11 in 10.0 mi NNW 11.5 mph - N/A   Clear
7:15 PM 68.0 °F 35.6 °F 30% 30.12 in 10.0 mi NW 9.2 mph 19.6 mph N/A   Mostly Cloudy
7:35 PM 68.0 °F 35.6 °F 30% 30.12 in 10.0 mi NW 9.2 mph - N/A   Overcast
7:55 PM 66.2 °F 35.6 °F 32% 30.13 in 10.0 mi NW 12.7 mph 19.6 mph N/A   Overcast
8:15 PM 64.4 °F 35.6 °F 34% 30.14 in 10.0 mi NW 9.2 mph - N/A   Mostly Cloudy
8:35 PM 62.6 °F 35.6 °F 37% 30.14 in 10.0 mi NW 6.9 mph - N/A   Partly Cloudy
8:55 PM 62.6 °F 35.6 °F 37% 30.15 in 10.0 mi WNW 4.6 mph - N/A   Clear
9:15 PM 62.6 °F 37.4 °F 39% 30.15 in 10.0 mi WNW 9.2 mph - N/A   Scattered Clouds
9:35 PM 62.6 °F 35.6 °F 37% 30.16 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
9:55 PM 62.6 °F 35.6 °F 37% 30.16 in 10.0 mi WNW 8.1 mph - N/A   Scattered Clouds
10:15 PM 62.6 °F 35.6 °F 37% 30.17 in 10.0 mi NW 12.7 mph 18.4 mph N/A   Scattered Clouds
10:35 PM 60.8 °F 35.6 °F 39% 30.18 in 10.0 mi NW 11.5 mph - N/A   Partly Cloudy
10:55 PM 59.0 °F 35.6 °F 42% 30.18 in 10.0 mi WNW 9.2 mph - N/A   Clear
11:55 PM 55.4 °F 37.4 °F 51% 30.22 in 10.0 mi Calm Calm - N/A   Clear