Weather History for Spearfish, SD

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Month of May, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 84 °F 65 °F 46 °F
Mean Temperature 70 °F 54 °F 40 °F
Min Temperature 59 °F 42 °F 33 °F
Degree Days  
Heating Degree Days (base 65) 24 12 0 359
Cooling Degree Days (base 65) 6 0 0 11
Growing Degree Days (base 50) 20 5 0 143
Dew Point  
Dew Point 57 °F 38 °F 18 °F
Precipitation  
Precipitation 0.83 in 0.09 in 0.00 in 2.70 in
Snowdepth - - - -
Wind  
Wind 31 mph 8 mph 0 mph
Gust Wind 47 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.36 in 29.96 in 29.55 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

May. 14, 2012 Rise Set
Actual Time 6:28 AM CDT 9:15 PM CDT
Civil Twilight 5:54 AM CDT 9:49 PM CDT
Nautical Twilight 5:11 AM CDT 10:32 PM CDT
Astronomical Twilight 4:22 AM CDT 11:22 PM CDT
Moon 3:17 AM CDT (5/14) 3:25 PM CDT (5/14)
Length of Visible Light 15h 54m
Length of Day
14h 47m
Waning Crescent, 32% of the Moon is Illuminated
May 14
Waning Crescent
May 20
New
May 28
First Quarter
Jun 4
Full
Jun 11
Last Quarter

Weather History Calendar

 
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Thunderstorm
Actual:
64 | 41 0.06
Average:
- | - -
Thunderstorm
Actual:
69 | 37 0.00
Average:
- | - -
Scattered Clouds
Actual:
66 | 39 0.00
Average:
- | - -
Rain
Actual:
66 | 50 0.00
Average:
- | - -
Thunderstorm
Actual:
60 | 39 0.76
Average:
- | - -
Scattered Clouds
Actual:
57 | 37 0.00
Average:
- | - -
Scattered Clouds
Actual:
57 | 39 0.00
Average:
- | - -
Clear
Actual:
59 | 35 0.00
Average:
- | - -
Clear
Actual:
75 | 35 0.00
Average:
- | - -
Scattered Clouds
Actual:
71 | 42 0.00
Average:
- | - -
Partly Cloudy
Actual:
55 | 35 0.00
Average:
- | - -
Clear
Actual:
64 | 33 0.00
Average:
- | - -
Clear
Actual:
71 | 41 0.00
Average:
- | - -
Clear
Actual:
78 | 44 0.00
Average:
- | - -
Clear
Actual:
71 | 41 0.00
Average:
- | - -
Clear
Actual:
84 | 57 0.00
Average:
- | - -
Rain
Actual:
77 | 55 0.06
Average:
- | - -
Thunderstorm
Actual:
68 | 50 0.83
Average:
- | - -
Rain
Actual:
57 | 42 0.19
Average:
- | - -
Scattered Clouds
Actual:
71 | 37 0.00
Average:
- | - -
Rain
Actual:
80 | 50 0.00
Average:
- | - -
Clear
Actual:
80 | 59 0.00
Average:
- | - -
Rain
Actual:
59 | 44 0.02
Average:
- | - -
Rain
Actual:
55 | 41 0.27
Average:
- | - -
Rain
Actual:
46 | 35 0.06
Average:
- | - -
Thunderstorm
Actual:
51 | 42 0.00
Average:
- | - -
Thunderstorm
Actual:
68 | 41 0.06
Average:
- | - -
Rain
Actual:
59 | 37 0.02
Average:
- | - -
Scattered Clouds
Actual:
64 | 41 0.00
Average:
- | - -
Rain
Actual:
59 | 42 0.37
Average:
- | - -
Rain
Actual:
66 | 39 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
May high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 64 52 41 48 39 32 94 63 45 29.75 29.63 29.57 10 10 5 14 6 20 0.06 Rain , Thunderstorm
2 69 53 37 48 42 36 93 67 35 29.89 29.73 29.64 10 10 10 15 6 21 0.00 Thunderstorm
3 66 52 39 46 40 34 87 65 40 29.98 29.91 29.82 10 10 8 30 9 41 0.00  
4 66 58 50 52 47 41 100 68 42 29.99 29.91 29.81 10 10 10 26 8 34 0.00 Rain
5 60 50 39 52 48 36 100 87 63 30.18 30.00 29.92 10 8 2 23 8 40 0.76 Rain , Thunderstorm
6 57 47 37 36 29 25 87 53 33 30.29 30.20 30.11 10 10 10 22 11 30 0.00  
7 57 48 39 28 25 19 65 43 28 30.30 30.23 30.17 10 10 10 24 13 34 0.00  
8 59 47 35 36 28 23 81 49 36 30.23 30.18 30.10 10 10 10 17 7 23 0.00  
9 75 55 35 48 37 28 81 49 29 30.10 29.94 29.80 10 10 5 9 4 - 0.00  
10 71 56 42 46 37 32 66 47 31 30.11 29.82 29.70 10 10 8 29 9 43 0.00  
11 55 45 35 32 25 18 75 47 30 30.32 30.25 30.12 10 10 10 12 8 - 0.00  
12 64 48 33 36 28 23 70 46 27 30.36 30.31 30.27 10 10 8 14 4 21 0.00  
13 71 56 41 46 32 25 62 38 22 30.28 30.24 30.17 10 10 10 14 3 - 0.00  
14 78 61 44 34 29 23 49 28 17 30.17 30.13 30.08 10 10 10 18 5 29 0.00  
15 71 56 41 37 32 28 70 37 23 30.26 30.19 30.06 10 10 10 20 7 26 0.00  
16 84 70 57 54 38 28 47 31 17 30.04 29.86 29.73 10 10 10 26 8 40 0.00  
17 77 66 55 54 41 36 72 39 26 29.80 29.76 29.71 10 10 4 18 7 25 0.06 Rain
18 68 59 50 54 50 46 100 74 52 29.86 29.73 29.66 10 9 3 18 7 24 0.83 Rain , Thunderstorm
19 57 50 42 50 40 32 100 73 38 30.16 30.05 29.87 10 9 1 22 13 33 0.19 Rain
20 71 54 37 45 38 32 87 57 35 30.24 30.18 30.12 10 10 10 17 6 24 0.00  
21 80 65 50 57 46 39 71 46 26 30.11 30.03 29.90 10 10 10 21 10 28 0.00 Rain
22 80 70 59 50 42 32 59 37 21 29.90 29.66 29.55 10 10 10 24 11 37 0.00  
23 59 52 44 46 39 32 82 58 41 29.71 29.66 29.63 10 10 8 21 6 24 0.02 Rain
24 55 48 41 41 38 32 93 70 50 29.87 29.72 29.61 10 9 3 20 6 28 0.27 Rain
25 46 40 35 45 38 32 100 87 71 30.03 29.97 29.88 10 8 2 23 7 29 0.06 Rain
26 51 46 42 48 46 43 100 97 87 29.97 29.85 29.67 10 5 0 23 17 29 0.00 Fog , Rain , Thunderstorm
27 68 54 41 50 42 32 100 72 30 29.80 29.70 29.65 10 7 0 30 9 46 0.06 Fog , Rain , Thunderstorm
28 59 48 37 45 35 32 100 63 36 30.03 29.89 29.80 10 10 10 31 14 47 0.02 Rain
29 64 52 41 41 36 32 71 55 37 30.11 30.06 30.02 10 10 7 21 14 29 0.00  
30 59 50 42 46 43 37 100 82 55 30.11 30.02 29.94 10 9 2 24 8 36 0.37 Rain
31 66 52 39 50 41 37 100 65 37 30.14 30.08 29.98 10 10 9 14 5 21 0.00 Rain