St. Louis, MO

11:22 AM CDT on April 19, 2018 (GMT -0500)
Lambert-Saint Louis International

Weather History for KSTL - September, 2011

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Month of September, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 104 °F 77 °F 64 °F
Mean Temperature 93 °F 68 °F 55 °F
Min Temperature 82 °F 58 °F 45 °F
Degree Days  
Heating Degree Days (base 65) 10 2 0 56
Cooling Degree Days (base 65) 28 5 0 145
Growing Degree Days (base 50) 42 18 4 534
Dew Point  
Dew Point 72 °F 52 °F 28 °F
Precipitation  
Precipitation 1.78 in 0.13 in 0.00 in 3.18 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 43 mph 7 mph 0 mph
Gust Wind 68 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.38 in 30.00 in 29.71 in

Monthly Weather History Graph

Monthly Weather History Graph

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Astronomy

Sep. 04, 2011 Rise Set
Actual Time 6:32 AM CDT 7:27 PM CDT
Civil Twilight 6:05 AM CDT 7:54 PM CDT
Nautical Twilight 5:33 AM CDT 8:26 PM CDT
Astronomical Twilight 5:00 AM CDT 8:59 PM CDT
Moon 2:12 PM CDT (9/4) 11:53 PM CDT (9/4)
Length of Visible Light 13h 48m
Length of Day
12h 54m
Waxing Crescent, 50% of the Moon is Illuminated
Sep 4
Waxing Crescent
Sep 4
First Quarter
Sep 12
Full
Sep 20
Last Quarter
Sep 27
New

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  
1 104 93 82 70 66 63 65 47 29 30.02 29.94 29.88 10 9 8 18 10 30 0.00  
2 101 91 80 65 63 61 55 42 29 29.97 29.91 29.86 10 9 8 16 8 23 0.00  
3 101 88 74 72 66 62 69 50 31 29.93 29.86 29.77 10 10 6 43 7 68 0.16 Rain , Thunderstorm
4 80 71 62 68 58 45 90 62 33 30.02 29.96 29.85 10 10 9 20 10 24 T Rain
5 75 66 57 52 46 38 80 54 27 30.07 30.03 30.00 10 10 10 23 15 31 0.00  
6 75 64 52 46 44 39 77 53 29 30.14 30.09 30.04 10 10 10 20 11 32 0.00  
7 79 65 51 49 46 41 83 55 27 30.18 30.13 30.09 10 10 10 20 9 28 0.00  
8 81 67 52 52 46 38 77 49 21 30.14 30.06 29.98 10 10 10 21 9 30 0.00  
9 67 65 62 63 60 53 93 78 63 29.96 29.94 29.91 10 7 2 7 7 8 0.18 Rain
10 76 70 64 63 61 58 93 74 54 30.03 29.98 29.94 10 6 3 8 2 12 0.02 Rain
11 83 72 60 63 60 56 100 70 40 30.10 30.05 30.01 10 5 0 9 2 14 0.00 Fog
12 90 77 64 61 58 55 84 58 32 30.11 30.01 29.91 10 10 9 15 6 22 0.00  
13 93 82 70 62 58 54 61 46 30 29.97 29.90 29.86 10 10 10 17 7 22 T  
14 70 61 52 62 57 50 97 89 80 30.20 30.03 29.93 10 6 2 23 11 30 1.78 Rain , Thunderstorm
15 64 55 46 48 35 28 89 58 27 30.38 30.30 30.22 10 10 10 20 10 24 0.00  
16 67 61 54 50 41 35 77 55 32 30.32 30.26 30.21 10 10 9 17 7 21 0.02 Rain
17 70 64 57 54 49 45 72 58 44 30.24 30.18 30.12 10 10 9 14 6 17 0.02 Rain
18 71 66 60 67 61 53 97 85 72 30.14 30.05 29.93 10 4 1 15 7 18 0.93 Rain
19 71 64 56 65 62 56 93 80 66 30.04 29.99 29.93 10 8 5 16 6 20 T Rain
20 77 65 53 59 56 52 93 74 54 30.06 30.02 29.96 10 9 5 9 2 13 0.00 Fog
21 79 70 60 59 51 44 90 61 31 30.10 30.03 29.96 10 10 9 16 7 22 T Rain
22 64 59 54 55 52 51 93 83 72 30.19 30.14 30.09 10 10 8 13 5 17 0.03 Rain
23 66 58 50 55 52 48 100 82 63 30.15 30.10 29.99 10 6 0 10 3 17 0.04 Fog , Rain
24 68 57 46 47 43 40 86 62 37 30.01 29.96 29.91 10 10 10 15 4 20 0.00  
25 69 57 45 48 45 42 100 69 37 29.92 29.86 29.78 10 9 5 12 4 16 0.00  
26 73 61 48 48 46 43 86 61 35 29.84 29.79 29.73 10 10 10 25 13 32 T Rain
27 72 64 56 52 50 45 77 61 45 29.88 29.81 29.71 10 10 10 21 9 30 0.00  
28 76 67 57 57 53 51 80 62 43 29.86 29.84 29.82 10 10 10 14 5 18 0.00  
29 88 75 61 58 49 32 84 54 24 29.97 29.86 29.80 10 10 10 28 10 36 0.00  
30 73 64 54 42 39 37 59 44 29 30.13 30.07 29.96 10 10 10 22 12 30 0.00