Spearfish, SD

5:16 PM MDT on March 23, 2017 (GMT -0600)
Black Hills-Ice

Weather History for KSPF - December, 2012

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Week of December 16, 2012 through December 22, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 50 °F 37 °F 26 °F
Mean Temperature 40 °F 28 °F 22 °F
Min Temperature 28 °F 19 °F 10 °F
Degree Days  
Heating Degree Days (base 65) 44 37 25 259
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 30 °F 11 °F 0 °F
Precipitation  
Precipitation 0.51 in 0.08 in 0.00 in 0.53 in
Snowdepth - - - -
Wind  
Wind 22 mph 8 mph 0 mph
Gust Wind 33 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.06 in 29.80 in 29.35 in

Weekly Weather History Graph

Weekly Weather History Graph

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Astronomy

Dec. 20, 2012 Rise Set
Actual Time 8:28 AM CST 5:17 PM CST
Civil Twilight 7:54 AM CST 5:51 PM CST
Nautical Twilight 7:17 AM CST 6:28 PM CST
Astronomical Twilight 6:42 AM CST 7:03 PM CST
Moon 12:48 PM CST (12/20) 1:04 AM CST (12/20)
Length of Visible Light 9h 56m
Length of Day
8h 49m
First Quarter, 55% of the Moon is Illuminated
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
16 32 26 21 23 18 14 86 69 51 29.69 29.63 29.58 10 10 4 13 5 16 0.01 Snow
17 37 27 17 30 18 10 93 65 44 29.68 29.49 29.35 10 10 2 16 5 22 0.51 Snow
18 35 30 24 28 13 5 75 47 32 29.75 29.61 29.44 10 10 5 22 16 33 0.01 Snow
19 26 22 17 12 7 1 59 52 40 30.05 29.92 29.76 10 10 10 16 11 23 0.00 Thunderstorm
20 42 28 15 9 4 0 53 34 21 30.06 30.03 30.01 10 10 10 20 9 29 0.00  
21 50 40 28 18 9 5 47 31 17 30.02 29.97 29.91 10 10 10 9 4 - 0.00  
22 35 22 10 18 11 3 93 55 28 30.02 29.94 29.81 10 10 5 10 4 - 0.00