Weather History for Rapid City, SD

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 97 °F 81 °F 49 °F
Mean Temperature 81 °F 66 °F 45 °F
Min Temperature 66 °F 51 °F 34 °F
Degree Days  
Heating Degree Days (base 65) 20 3 0 102
Cooling Degree Days (base 65) 16 4 0 133
Growing Degree Days (base 50) 30 16 0 479
Dew Point  
Dew Point 65 °F 48 °F 23 °F
Precipitation  
Precipitation 0.42 in 0.04 in 0.00 in 1.18 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 47 mph 9 mph 0 mph
Gust Wind 63 mph 25 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.32 in 29.90 in 29.39 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 01, 2013 Rise Set
Actual Time 6:15 AM MDT 7:27 PM MDT
Civil Twilight 5:45 AM MDT 7:57 PM MDT
Nautical Twilight 5:10 AM MDT 8:32 PM MDT
Astronomical Twilight 4:32 AM MDT 9:10 PM MDT
Moon 2:34 AM MDT (9/1) 5:10 PM MDT (9/1)
Length of Visible Light 14h 11m
Length of Day
13h 11m
Waning Crescent, 13% of the Moon is Illuminated
Sep 1
Waning Crescent
Sep 5
New
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter

Weather History Calendar

Precipitation Actual month total 1.18 Normal Month Total: 1.29
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Clear
Actual:
84 | 51 0.00
Average:
82 | 52 0.04
Clear
Actual:
93 | 50 0.00
Average:
82 | 52 0.05
Scattered Clouds
Actual:
94 | 66 0.00
Average:
82 | 51 0.04
Thunderstorm
Actual:
93 | 63 0.00
Average:
81 | 51 0.04
Clear
Actual:
94 | 65 0.00
Average:
81 | 51 0.04
Thunderstorm
Actual:
91 | 63 0.00
Average:
80 | 50 0.04
Clear
Actual:
97 | 65 0.00
Average:
80 | 50 0.05
Thunderstorm
Actual:
85 | 63 0.42
Average:
79 | 49 0.04
Rain
Actual:
78 | 59 0.11
Average:
79 | 49 0.04
Scattered Clouds
Actual:
78 | 55 0.00
Average:
78 | 48 0.05
Clear
Actual:
84 | 54 0.00
Average:
78 | 48 0.04
Clear
Actual:
81 | 51 0.00
Average:
78 | 48 0.04
Rain
Actual:
71 | 51 T
Average:
77 | 47 0.04
Rain
Actual:
82 | 57 0.01
Average:
77 | 47 0.05
Rain
Actual:
71 | 50 0.01
Average:
76 | 46 0.04
Partly Cloudy
Actual:
70 | 48 0.00
Average:
76 | 46 0.04
Clear
Actual:
92 | 49 0.00
Average:
75 | 45 0.04
Clear
Actual:
93 | 56 0.00
Average:
75 | 45 0.05
Scattered Clouds
Actual:
65 | 38 0.00
Average:
74 | 45 0.04
Clear
Actual:
73 | 34 0.00
Average:
73 | 44 0.04
Clear
Actual:
92 | 39 0.00
Average:
73 | 44 0.05
Thunderstorm
Actual:
93 | 48 0.19
Average:
72 | 43 0.04
Rain
Actual:
61 | 45 0.34
Average:
72 | 43 0.04
Fog
Actual:
76 | 41 0.00
Average:
71 | 42 0.05
Thunderstorm
Actual:
81 | 53 0.01
Average:
71 | 42 0.04
Scattered Clouds
Actual:
67 | 48 0.00
Average:
70 | 42 0.05
Rain
Actual:
49 | 40 0.09
Average:
70 | 41 0.04
Scattered Clouds
Actual:
70 | 34 0.00
Average:
69 | 41 0.04
Clear
Actual:
81 | 37 0.00
Average:
69 | 40 0.05
Clear
Actual:
87 | 47 0.00
Average:
68 | 40 0.04
 

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

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 84 68 51 48 44 41 67 47 26 30.11 30.06 30.01 10 10 10 14 4 14 0.00  
2 93 72 50 58 51 47 89 56 22 30.05 29.96 29.87 10 10 10 17 7 23 0.00  
3 94 80 66 60 58 55 73 52 30 29.96 29.89 29.83 10 10 10 20 8 24 0.00  
4 93 78 63 62 60 58 87 61 34 30.09 30.01 29.95 10 10 10 13 8 20 0.00 Thunderstorm
5 94 80 65 63 61 58 93 63 33 30.06 29.98 29.90 10 10 10 20 8 26 0.00  
6 91 77 63 64 61 57 84 61 38 30.01 29.90 29.86 10 10 10 28 7 33 0.00 Thunderstorm
7 97 81 65 65 61 55 81 54 26 29.97 29.92 29.86 10 10 10 22 10 28 0.00  
8 85 74 63 64 62 60 93 71 48 30.02 29.89 29.75 10 9 2 43 8 52 0.42 Rain , Thunderstorm
9 78 69 59 63 58 53 93 71 49 29.96 29.85 29.71 10 10 2 23 8 31 0.11 Rain
10 78 67 55 57 52 49 90 65 40 30.13 30.05 29.95 10 10 10 18 6 23 0.00  
11 84 69 54 54 49 43 93 59 24 30.21 30.17 30.12 10 10 10 12 5 15 0.00  
12 81 66 51 52 48 46 89 60 30 30.32 30.25 30.19 10 10 10 15 8 20 0.00  
13 71 61 51 59 53 45 90 73 55 30.18 30.03 29.86 10 10 3 25 11 31 T Rain
14 82 70 57 61 58 55 97 70 42 30.05 29.84 29.75 10 9 2 32 13 40 0.01 Rain
15 71 61 50 56 53 47 100 72 44 30.30 30.21 30.03 10 9 3 17 7 23 0.01 Rain
16 70 59 48 53 51 47 100 79 58 30.25 30.08 29.90 10 10 9 30 16 37 0.00  
17 92 71 49 55 50 45 100 60 20 29.87 29.72 29.59 10 9 5 21 6 26 0.00  
18 93 75 56 53 48 38 75 45 15 29.79 29.62 29.54 10 10 10 36 13 48 0.00  
19 65 52 38 44 39 36 82 60 37 30.17 30.03 29.80 10 10 10 30 16 47 0.00  
20 73 54 34 38 35 32 96 62 27 30.18 30.08 29.96 10 10 10 10 4 16 0.00  
21 92 66 39 38 33 23 73 41 8 29.94 29.72 29.58 10 10 10 14 6 18 0.00  
22 93 71 48 57 43 35 93 55 16 29.59 29.49 29.39 10 10 6 26 8 32 0.19 Rain , Thunderstorm
23 61 53 45 56 53 46 100 88 75 29.96 29.75 29.40 10 6 0 37 13 47 0.34 Fog , Rain
24 76 59 41 47 42 38 100 63 25 30.02 29.92 29.75 10 8 0 24 10 33 0.00 Fog
25 81 67 53 50 45 41 83 56 28 29.72 29.55 29.39 10 10 10 30 16 38 0.01 Rain , Thunderstorm
26 67 58 48 48 43 36 93 69 45 29.89 29.73 29.51 10 10 10 30 16 37 0.00  
27 49 45 40 39 38 36 89 75 61 30.00 29.91 29.85 10 10 7 31 15 41 0.09 Rain
28 70 52 34 38 33 29 92 57 22 29.99 29.95 29.90 10 10 10 24 7 31 0.00  
29 81 59 37 41 35 31 85 51 17 29.90 29.73 29.62 10 10 10 22 6 29 0.00  
30 87 67 47 46 37 28 67 41 15 29.79 29.62 29.44 10 10 10 47 12 63 0.00