Weather History for Rapid City, SD

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Month of September, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 92 °F 77 °F 46 °F
Mean Temperature 71 °F 61 °F 43 °F
Min Temperature 59 °F 45 °F 32 °F
Degree Days  
Heating Degree Days (base 65) 22 5 0 151
Cooling Degree Days (base 65) 6 2 0 45
Growing Degree Days (base 50) 21 12 0 350
Dew Point  
Dew Point 58 °F 41 °F 16 °F
Precipitation  
Precipitation 0.29 in 0.02 in 0.00 in 0.75 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 48 mph 9 mph 0 mph
Gust Wind 93 mph 24 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.46 in 30.06 in 29.62 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 16, 2011 Rise Set
Actual Time 6:32 AM MDT 7:01 PM MDT
Civil Twilight 6:03 AM MDT 7:30 PM MDT
Nautical Twilight 5:29 AM MDT 8:04 PM MDT
Astronomical Twilight 4:53 AM MDT 8:39 PM MDT
Moon 8:40 PM MDT (9/16) 10:51 AM MDT (9/16)
Length of Visible Light 13h 26m
Length of Day
12h 28m
Waning Gibbous, 84% of the Moon is Illuminated
Sep 16
Waning Gibbous
Sep 20
Last Quarter
Sep 27
New
Oct 3
First Quarter
Oct 11
Full

Weather History Calendar

Precipitation Actual month total 0.75 Normal Month Total: 1.29
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Thunderstorm
Actual:
80 | 59 0.15
Average:
82 | 52 0.04
Thunderstorm
Actual:
82 | 57 0.08
Average:
82 | 52 0.05
Partly Cloudy
Actual:
69 | 47 0.00
Average:
82 | 51 0.04
Clear
Actual:
73 | 41 0.00
Average:
81 | 51 0.04
Clear
Actual:
89 | 48 0.00
Average:
81 | 51 0.04
Clear
Actual:
88 | 54 0.00
Average:
80 | 50 0.04
Clear
Actual:
85 | 53 0.00
Average:
80 | 50 0.05
Clear
Actual:
82 | 49 0.00
Average:
79 | 49 0.04
Clear
Actual:
80 | 51 0.00
Average:
79 | 49 0.04
Clear
Actual:
83 | 46 0.00
Average:
78 | 48 0.05
Clear
Actual:
92 | 49 0.00
Average:
78 | 48 0.04
Clear
Actual:
78 | 48 0.00
Average:
78 | 48 0.04
Scattered Clouds
Actual:
73 | 42 0.00
Average:
77 | 47 0.04
Rain
Actual:
54 | 40 0.03
Average:
77 | 47 0.05
Rain
Actual:
46 | 39 0.29
Average:
76 | 46 0.04
Partly Cloudy
Actual:
71 | 40 0.00
Average:
76 | 46 0.04
Rain
Actual:
73 | 46 0.20
Average:
75 | 45 0.04
Clear
Actual:
73 | 41 0.00
Average:
75 | 45 0.05
Clear
Actual:
81 | 43 0.00
Average:
74 | 45 0.04
Scattered Clouds
Actual:
64 | 39 0.00
Average:
73 | 44 0.04
Clear
Actual:
65 | 37 0.00
Average:
73 | 44 0.05
Clear
Actual:
72 | 32 0.00
Average:
72 | 43 0.04
Clear
Actual:
90 | 41 0.00
Average:
72 | 43 0.04
Clear
Actual:
87 | 53 0.00
Average:
71 | 42 0.05
Clear
Actual:
84 | 48 0.00
Average:
71 | 42 0.04
Clear
Actual:
83 | 44 0.00
Average:
70 | 42 0.05
Clear
Actual:
85 | 54 0.00
Average:
70 | 41 0.04
Clear
Actual:
84 | 47 0.00
Average:
69 | 41 0.04
Scattered Clouds
Actual:
67 | 35 0.00
Average:
69 | 40 0.05
Clear
Actual:
80 | 35 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

2011 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 80 70 59 58 53 51 80 60 39 30.01 29.83 29.62 10 10 7 29 15 39 0.15 Rain , Thunderstorm
2 82 70 57 57 52 39 86 61 36 30.07 29.95 29.81 10 10 8 36 11 47 0.08 Rain , Thunderstorm
3 69 58 47 40 37 34 71 52 32 30.30 30.19 30.01 10 10 10 30 17 39 0.00  
4 73 57 41 41 39 37 82 56 29 30.35 30.25 30.14 10 10 10 17 8 23 0.00  
5 89 69 48 47 42 37 71 44 17 30.12 29.97 29.87 10 10 10 16 8 18 0.00  
6 88 71 54 47 43 38 62 40 18 30.17 30.03 29.91 10 10 10 10 7 14 0.00  
7 85 69 53 46 42 37 66 43 19 30.34 30.24 30.14 10 10 10 14 6 93 0.00  
8 82 66 49 51 44 35 83 52 20 30.32 30.27 30.21 10 10 10 15 6 16 0.00  
9 80 66 51 48 44 39 83 53 23 30.27 30.21 30.18 10 10 10 14 5 20 0.00  
10 83 65 46 48 44 42 86 55 24 30.21 30.13 30.05 10 10 10 14 3 20 0.00  
11 92 71 49 47 40 33 74 44 13 30.07 29.94 29.81 10 10 10 20 7 29 0.00  
12 78 63 48 46 41 34 74 50 25 30.14 29.98 29.79 10 10 10 37 14 46 0.00  
13 73 58 42 47 43 39 93 66 38 30.26 30.15 30.10 10 10 10 20 8 25 0.00  
14 54 47 40 42 39 34 92 79 66 30.46 30.37 30.22 10 10 6 16 8 20 0.03 Rain
15 46 43 39 43 40 38 100 88 76 30.35 30.18 30.01 10 9 4 25 15 31 0.29 Rain
16 71 56 40 52 48 40 100 75 49 30.00 29.91 29.81 10 10 10 18 10 23 0.00  
17 73 60 46 53 50 45 100 75 49 30.01 29.84 29.75 10 7 0 31 9 38 0.20 Fog , Rain
18 73 57 41 46 40 34 96 60 23 30.13 30.06 29.98 10 10 10 18 6 23 0.00  
19 81 62 43 48 41 36 83 52 20 30.11 29.95 29.76 10 10 10 48 10 60 0.00  
20 64 52 39 38 32 28 73 50 27 30.22 30.08 29.85 10 10 10 44 21 55 0.00  
21 65 51 37 37 34 32 85 58 31 30.28 30.23 30.20 10 10 10 18 7 25 0.00  
22 72 52 32 40 35 30 92 57 22 30.22 30.14 30.08 10 9 2 12 5 17 0.00  
23 90 66 41 38 35 29 79 45 11 30.10 30.01 29.93 10 10 10 24 8 31 0.00  
24 87 70 53 44 40 35 66 43 20 29.99 29.90 29.84 10 10 10 21 9 26 0.00  
25 84 66 48 46 44 43 80 52 24 29.89 29.82 29.75 10 10 10 15 5 20 0.00  
26 83 64 44 48 44 41 86 55 24 30.00 29.89 29.80 10 10 10 20 7 24 0.00  
27 85 70 54 42 37 30 59 37 14 30.05 29.98 29.91 10 10 10 14 6 17 0.00  
28 84 66 47 40 38 35 71 46 20 30.17 29.96 29.87 10 10 10 29 12 36 0.00  
29 67 51 35 33 25 16 64 39 14 30.42 30.35 30.18 10 10 10 26 12 32 0.00  
30 80 58 35 36 30 23 70 44 18 30.34 30.12 29.98 10 10 10 24 9 30 0.00