Weather History for Spearfish, SD

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Month of January, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 66 °F 40 °F 8 °F
Mean Temperature 56 °F 31 °F 0 °F
Min Temperature 46 °F 21 °F -7 °F
Degree Days  
Heating Degree Days (base 65) 64 34 9 1060
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 6 0 0 6
Dew Point  
Dew Point 36 °F 14 °F -11 °F
Precipitation  
Precipitation 8.26 in 0.55 in 0.00 in 17.03 in
Snowdepth - - - -
Wind  
Wind 36 mph 11 mph 0 mph
Gust Wind 53 mph 25 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.60 in 29.93 in 29.21 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jan. 10, 2012 Rise Set
Actual Time 8:30 AM CST 5:34 PM CST
Civil Twilight 7:57 AM CST 6:07 PM CST
Nautical Twilight 7:21 AM CST 6:44 PM CST
Astronomical Twilight 6:46 AM CST 7:19 PM CST
Moon 7:35 PM CST (1/10) 9:05 AM CST (1/10)
Length of Visible Light 10h 10m
Length of Day
9h 04m
Full, 98% of the Moon is Illuminated
Jan 10
Full
Jan 16
Last Quarter
Jan 23
New
Jan 30
First Quarter
Feb 7
Full

Weather History Calendar

 
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Clear
Actual:
28 | 17 0.00
Average:
- | - -
Clear
Actual:
42 | 15 0.00
Average:
- | - -
Clear
Actual:
51 | 35 0.00
Average:
- | - -
Clear
Actual:
59 | 35 0.00
Average:
- | - -
Clear
Actual:
66 | 46 0.00
Average:
- | - -
Scattered Clouds
Actual:
39 | 26 0.00
Average:
- | - -
Clear
Actual:
37 | 21 0.00
Average:
- | - -
Scattered Clouds
Actual:
39 | 19 0.00
Average:
- | - -
Clear
Actual:
53 | 37 0.00
Average:
- | - -
Rain
Actual:
59 | 35 0.32
Average:
- | - -
Snow
Actual:
26 | 8 2.13
Average:
- | - -
Snow
Actual:
28 | 6 0.12
Average:
- | - -
Partly Cloudy
Actual:
41 | 23 0.00
Average:
- | - -
Scattered Clouds
Actual:
48 | 23 0.00
Average:
- | - -
Scattered Clouds
Actual:
50 | 24 0.00
Average:
- | - -
Snow
Actual:
19 | 5 0.54
Average:
- | - -
Snow
Actual:
28 | -2 0.01
Average:
- | - -
Snow
Actual:
30 | -4 2.01
Average:
- | - -
Snow
Actual:
8 | -7 0.00
Average:
- | - -
Snow
Actual:
12 | 0 0.18
Average:
- | - -
Scattered Clouds
Actual:
50 | 14 0.00
Average:
- | - -
Snow
Actual:
39 | 30 8.26
Average:
- | - -
Clear
Actual:
42 | 23 0.00
Average:
- | - -
Snow
Actual:
33 | 23 2.86
Average:
- | - -
Scattered Clouds
Actual:
51 | 32 0.00
Average:
- | - -
Scattered Clouds
Actual:
42 | 28 0.00
Average:
- | - -
Snow
Actual:
35 | 23 0.60
Average:
- | - -
Scattered Clouds
Actual:
32 | 24 0.00
Average:
- | - -
Partly Cloudy
Actual:
53 | 28 0.00
Average:
- | - -
Scattered Clouds
Actual:
53 | 44 0.00
Average:
- | - -
Partly Cloudy
Actual:
44 | 35 0.00
Average:
- | - -
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 28 22 17 19 13 7 80 62 47 30.60 30.46 30.24 10 10 10 22 13 28 0.00  
2 42 28 15 28 16 5 80 63 49 30.57 30.39 30.17 10 10 10 6 2 - 0.00  
3 51 43 35 25 23 21 60 41 32 30.24 30.07 29.97 10 10 10 29 11 39 0.00  
4 59 47 35 23 19 16 60 31 22 30.23 30.17 30.12 10 10 10 21 12 29 0.00  
5 66 56 46 25 21 16 43 25 14 30.06 29.90 29.80 10 10 10 24 12 33 0.00  
6 39 32 26 25 14 9 70 44 30 30.07 30.01 29.93 10 10 10 28 13 36 0.00  
7 37 29 21 18 13 9 74 54 30 30.12 30.06 30.01 10 10 10 10 3 - 0.00  
8 39 29 19 18 12 10 74 51 31 30.14 30.10 30.06 10 10 10 17 6 23 0.00  
9 53 45 37 27 25 21 60 47 33 30.13 30.09 30.03 10 10 10 20 14 26 0.00  
10 59 47 35 34 25 21 93 48 23 30.02 29.85 29.69 10 10 3 22 8 34 0.32 Rain
11 26 17 8 25 8 -4 100 73 52 30.18 30.13 29.97 10 8 1 34 22 48 2.13 Snow
12 28 17 6 23 7 -6 86 57 36 30.14 30.05 29.98 10 10 2 26 16 38 0.12 Rain , Snow
13 41 32 23 19 16 10 69 53 33 30.00 29.88 29.77 10 10 10 36 15 53 0.00  
14 48 36 23 25 14 5 64 45 25 30.04 29.91 29.68 10 10 10 12 8 16 0.00  
15 50 37 24 21 13 7 56 37 20 29.83 29.68 29.59 10 10 10 28 10 36 0.00  
16 19 12 5 12 7 1 86 82 73 30.04 29.90 29.84 10 6 1 12 5 - 0.54 Snow
17 28 13 -2 7 -1 -8 92 59 29 30.07 29.98 29.80 10 10 10 28 5 40 0.01 Snow
18 30 13 -4 3 -2 -9 85 60 29 29.83 29.73 29.60 10 8 0 31 20 48 2.01 Snow
19 8 0 -7 1 -6 -11 84 77 71 29.81 29.74 29.60 10 10 5 9 3 - 0.00 Snow
20 12 6 0 1 0 -2 92 79 62 29.92 29.80 29.55 10 10 2 13 6 16 0.18 Snow
21 50 32 14 34 27 7 86 57 46 29.74 29.38 29.21 10 10 10 36 13 50 0.00  
22 39 34 30 36 25 16 100 74 55 29.78 29.57 29.26 10 8 0 29 15 40 8.26 Rain , Snow
23 42 32 23 19 14 9 74 54 31 29.81 29.79 29.76 10 10 7 14 7 - 0.00  
24 33 28 23 28 19 9 100 67 40 30.13 30.03 29.83 10 8 1 15 6 20 2.86 Snow
25 51 42 32 25 14 0 46 33 22 30.00 29.83 29.76 10 10 10 30 14 44 0.00  
26 42 35 28 25 18 14 65 49 39 30.02 29.92 29.69 10 10 10 25 12 34 0.00  
27 35 29 23 32 18 3 100 67 40 30.18 30.02 29.75 10 10 0 29 19 39 0.60 Rain , Snow
28 32 28 24 10 6 1 46 40 34 30.14 30.09 30.05 10 10 10 25 18 39 0.00  
29 53 40 28 27 21 10 49 40 35 30.05 29.88 29.75 10 10 10 28 12 41 0.00  
30 53 48 44 27 20 19 49 34 26 29.75 29.67 29.62 10 10 10 21 13 26 0.00  
31 44 40 35 27 21 18 61 48 36 29.98 29.89 29.77 10 10 10 20 14 31 0.00