Weather History for St. Louis, MO

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 99 °F 84 °F 72 °F
Mean Temperature 89 °F 74 °F 63 °F
Min Temperature 79 °F 64 °F 51 °F
Degree Days  
Heating Degree Days (base 65) 2 0 0 3
Cooling Degree Days (base 65) 24 9 0 279
Growing Degree Days (base 50) 38 24 12 719
Dew Point  
Dew Point 76 °F 59 °F 31 °F
Precipitation  
Precipitation 1.81 in 0.11 in 0.00 in 2.74 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 32 mph 6 mph 0 mph
Gust Wind 48 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.27 in 30.00 in 29.74 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 02, 2013 Rise Set
Actual Time 6:31 AM CDT 7:29 PM CDT
Civil Twilight 6:04 AM CDT 7:56 PM CDT
Nautical Twilight 5:32 AM CDT 8:29 PM CDT
Astronomical Twilight 4:58 AM CDT 9:02 PM CDT
Moon 3:49 AM CDT (9/2) 5:42 PM CDT (9/2)
Length of Visible Light 13h 52m
Length of Day
12h 58m
Waning Crescent, 8% of the Moon is Illuminated
Sep 2
Waning Crescent
Sep 5
New
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter

Weather History Calendar

Precipitation Actual month total 2.74 Normal Month Total: 3.13
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Thunderstorm
Actual:
91 | 72 1.81
Average:
86 | 67 0.10
Scattered Clouds
Actual:
84 | 69 0.00
Average:
85 | 66 0.11
Scattered Clouds
Actual:
84 | 61 0.00
Average:
85 | 66 0.10
Scattered Clouds
Actual:
88 | 62 0.00
Average:
85 | 66 0.10
Partly Cloudy
Actual:
89 | 64 0.00
Average:
84 | 65 0.11
Partly Cloudy
Actual:
89 | 69 0.00
Average:
84 | 65 0.10
Rain
Actual:
94 | 70 T
Average:
84 | 64 0.11
Thunderstorm
Actual:
85 | 73 0.41
Average:
83 | 64 0.10
Partly Cloudy
Actual:
99 | 76 0.00
Average:
83 | 64 0.10
Scattered Clouds
Actual:
98 | 79 0.00
Average:
83 | 63 0.10
Scattered Clouds
Actual:
98 | 72 0.00
Average:
82 | 63 0.10
Rain
Actual:
86 | 67 T
Average:
82 | 62 0.11
Partly Cloudy
Actual:
76 | 58 0.00
Average:
81 | 62 0.10
Scattered Clouds
Actual:
76 | 53 0.00
Average:
81 | 61 0.10
Rain
Actual:
84 | 59 0.01
Average:
81 | 61 0.11
Rain
Actual:
75 | 60 T
Average:
80 | 61 0.10
Rain
Actual:
72 | 59 0.03
Average:
80 | 60 0.10
Thunderstorm
Actual:
88 | 67 0.17
Average:
79 | 60 0.10
Rain
Actual:
92 | 75 T
Average:
79 | 59 0.10
Thunderstorm
Actual:
77 | 58 0.30
Average:
78 | 59 0.11
Scattered Clouds
Actual:
73 | 53 0.00
Average:
78 | 58 0.10
Clear
Actual:
76 | 51 0.00
Average:
78 | 58 0.11
Clear
Actual:
77 | 53 0.00
Average:
77 | 57 0.10
Thunderstorm
Actual:
83 | 57 0.00
Average:
77 | 57 0.12
Partly Cloudy
Actual:
83 | 67 0.00
Average:
76 | 56 0.11
Scattered Clouds
Actual:
85 | 62 0.00
Average:
76 | 56 0.11
Scattered Clouds
Actual:
85 | 62 0.00
Average:
75 | 56 0.11
Rain
Actual:
86 | 66 0.01
Average:
75 | 55 0.11
Rain
Actual:
76 | 58 T
Average:
75 | 55 0.10
Partly Cloudy
Actual:
79 | 54 0.00
Average:
74 | 54 0.10
 

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 91 82 72 76 72 64 88 70 52 29.87 29.78 29.74 10 8 1 32 4 48 1.81 Rain , Thunderstorm
2 84 77 69 67 61 57 78 61 44 29.95 29.91 29.83 10 10 10 15 7 20 0.00  
3 84 73 61 61 56 54 84 62 39 30.07 30.03 29.96 10 10 10 10 4 15 0.00  
4 88 75 62 60 57 53 84 58 31 30.15 30.10 30.06 10 10 10 9 2 13 0.00  
5 89 77 64 62 59 53 84 58 31 30.18 30.14 30.12 10 10 10 12 4 14 0.00  
6 89 79 69 65 61 55 79 57 34 30.17 30.10 30.02 10 10 8 16 5 28 0.00  
7 94 82 70 66 62 58 78 55 32 30.03 29.97 29.89 10 10 10 14 6 18 T Rain
8 85 79 73 73 69 63 93 74 54 30.04 29.94 29.88 10 7 2 17 7 22 0.41 Rain , Thunderstorm
9 99 88 76 71 68 64 87 61 35 29.95 29.91 29.87 10 9 7 14 6 16 0.00  
10 98 89 79 68 64 58 71 49 27 30.06 30.02 29.95 10 10 9 16 7 21 0.00  
11 98 85 72 66 64 61 73 52 30 30.11 30.05 30.00 10 10 7 15 5 18 0.00  
12 86 77 67 68 62 48 79 59 38 30.09 30.03 29.96 10 10 9 16 8 21 T Rain
13 76 67 58 55 48 42 72 53 33 30.16 30.09 30.06 10 10 10 17 7 22 0.00  
14 76 65 53 47 42 31 72 46 19 30.17 30.10 30.04 10 10 10 13 5 29 0.00  
15 84 72 59 64 53 44 68 53 37 30.11 30.04 29.98 10 10 10 15 8 18 0.01 Rain
16 75 68 60 64 57 52 84 67 49 30.27 30.19 30.11 10 10 8 16 10 20 T Rain
17 72 66 59 63 58 53 87 78 68 30.24 30.17 30.07 10 9 7 13 7 15 0.03 Rain
18 88 78 67 72 66 61 93 73 53 30.08 30.02 29.94 10 8 4 17 7 20 0.17 Rain , Thunderstorm
19 92 84 75 71 68 66 82 63 44 29.97 29.92 29.83 10 9 7 17 10 22 T Rain
20 77 68 58 70 66 54 97 85 72 29.94 29.91 29.87 10 9 4 14 6 18 0.30 Rain , Thunderstorm
21 73 63 53 55 51 43 100 70 39 29.98 29.94 29.91 10 10 10 16 6 21 0.00  
22 76 64 51 55 52 48 100 69 37 30.03 29.97 29.94 10 10 7 9 2 25 0.00  
23 77 65 53 54 51 48 86 61 36 30.04 29.98 29.93 10 10 10 18 9 24 0.00  
24 83 70 57 64 59 52 93 68 43 29.96 29.87 29.79 10 10 10 16 10 23 0.00 Thunderstorm
25 83 75 67 64 63 59 93 70 47 29.88 29.84 29.80 10 9 5 13 4 18 0.00  
26 85 74 62 64 59 57 90 65 40 30.00 29.95 29.86 10 9 5 13 6 17 0.00  
27 85 74 62 62 56 51 84 59 34 30.09 30.03 29.99 10 10 7 16 9 22 0.00  
28 86 76 66 67 59 52 79 62 44 30.03 29.98 29.93 10 10 10 22 10 29 0.01 Rain
29 76 67 58 66 53 45 84 60 35 30.06 30.02 29.97 10 10 5 15 6 21 T Rain
30 79 67 54 63 55 48 83 66 48 29.99 29.94 29.88 10 10 9 15 5 20 0.00