Weather History for St. Louis, MO

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Month of September, 2014

  Max Avg Min Sum
Temperature  
Max Temperature 97 °F 80 °F 60 °F
Mean Temperature 86 °F 70 °F 55 °F
Min Temperature 75 °F 60 °F 45 °F
Degree Days  
Heating Degree Days (base 65) 10 1 0 39
Cooling Degree Days (base 65) 21 6 0 193
Growing Degree Days (base 50) 36 20 4 601
Dew Point  
Dew Point 75 °F 58 °F 39 °F
Precipitation  
Precipitation 2.15 in 0.15 in 0.00 in 4.20 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 30 mph 6 mph 0 mph
Gust Wind 46 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.42 in 30.08 in 29.64 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 10, 2014 Rise Set
Actual Time 6:38 AM CDT 7:17 PM CDT
Civil Twilight 6:11 AM CDT 7:44 PM CDT
Nautical Twilight 5:39 AM CDT 8:16 PM CDT
Astronomical Twilight 5:07 AM CDT 8:48 PM CDT
Moon 8:18 PM CDT (9/10) 8:24 AM CDT (9/10)
Length of Visible Light 13h 32m
Length of Day
12h 39m
Waning Gibbous, 96% of the Moon is Illuminated
Sep 10
Waning Gibbous
Sep 15
Last Quarter
Sep 24
New
Oct 1
First Quarter
Oct 8
Full

Weather History Calendar

Precipitation Actual month total 4.20 Normal Month Total: 3.13
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Thunderstorm
Actual:
87 | 69 2.15
Average:
86 | 67 0.10
Thunderstorm
Actual:
84 | 70 0.21
Average:
85 | 66 0.11
Partly Cloudy
Actual:
88 | 67 0.00
Average:
85 | 66 0.10
Scattered Clouds
Actual:
97 | 75 0.00
Average:
85 | 66 0.10
Thunderstorm
Actual:
97 | 69 0.01
Average:
84 | 65 0.11
Rain
Actual:
75 | 63 0.02
Average:
84 | 65 0.10
Clear
Actual:
78 | 56 0.00
Average:
84 | 64 0.11
Scattered Clouds
Actual:
83 | 58 0.00
Average:
83 | 64 0.10
Thunderstorm
Actual:
89 | 71 0.56
Average:
83 | 64 0.10
Thunderstorm
Actual:
89 | 67 1.13
Average:
83 | 63 0.10
Rain
Actual:
67 | 56 T
Average:
82 | 63 0.10
Rain
Actual:
60 | 52 0.01
Average:
82 | 62 0.11
Partly Cloudy
Actual:
65 | 45 0.00
Average:
81 | 62 0.10
Scattered Clouds
Actual:
73 | 47 0.00
Average:
81 | 61 0.10
Rain
Actual:
78 | 58 0.03
Average:
81 | 61 0.11
Rain
Actual:
67 | 54 T
Average:
80 | 61 0.10
Rain
Actual:
67 | 53 0.08
Average:
80 | 60 0.10
Partly Cloudy
Actual:
75 | 60 0.00
Average:
79 | 60 0.10
Scattered Clouds
Actual:
80 | 56 0.00
Average:
79 | 59 0.10
Partly Cloudy
Actual:
87 | 65 0.00
Average:
78 | 59 0.11
Scattered Clouds
Actual:
79 | 57 0.00
Average:
78 | 58 0.10
Scattered Clouds
Actual:
75 | 53 0.00
Average:
78 | 58 0.11
Partly Cloudy
Actual:
75 | 51 0.00
Average:
77 | 57 0.10
Partly Cloudy
Actual:
79 | 53 0.00
Average:
77 | 57 0.12
Partly Cloudy
Actual:
85 | 61 0.00
Average:
76 | 56 0.11
Partly Cloudy
Actual:
84 | 64 0.00
Average:
76 | 56 0.11
Partly Cloudy
Actual:
84 | 62 0.00
Average:
75 | 56 0.11
Scattered Clouds
Actual:
86 | 60 0.00
Average:
75 | 55 0.11
Clear
Actual:
88 | 61 0.00
Average:
75 | 55 0.10
Scattered Clouds
Actual:
87 | 61 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

2014 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 87 78 69 72 68 64 90 68 46 29.97 29.87 29.79 10 8 1 29 11 37 2.15 Rain , Thunderstorm
2 84 77 70 72 68 66 90 74 58 30.01 29.94 29.86 10 9 1 14 5 20 0.21 Rain , Thunderstorm
3 88 78 67 70 68 66 93 73 53 30.05 29.98 29.93 10 10 7 16 6 20 0.00  
4 97 86 75 75 70 66 79 62 45 30.02 29.96 29.94 10 10 10 21 10 24 0.00  
5 97 83 69 73 71 65 82 64 45 30.12 30.01 29.91 10 10 7 30 8 46 0.01 Rain , Thunderstorm
6 75 69 63 66 60 55 90 72 53 30.22 30.15 30.08 10 10 10 16 7 24 0.02 Rain
7 78 67 56 56 53 49 86 62 37 30.22 30.15 30.08 10 10 10 16 5 20 0.00  
8 83 71 58 59 57 54 84 64 43 30.11 30.05 29.97 10 10 10 13 6 17 0.00  
9 89 80 71 72 66 55 74 64 53 30.00 29.91 29.76 10 8 2 25 9 31 0.56 Rain , Thunderstorm
10 89 78 67 75 71 64 88 75 61 29.90 29.74 29.64 10 7 1 22 11 28 1.13 Rain , Thunderstorm
11 67 62 56 64 55 48 87 80 72 30.25 30.08 29.90 10 8 3 16 10 20 T Rain
12 60 56 52 52 49 46 89 81 72 30.33 30.26 30.22 10 9 2 17 10 23 0.01 Rain
13 65 55 45 47 42 39 89 65 40 30.42 30.35 30.30 10 10 8 16 4 22 0.00  
14 73 60 47 48 45 42 86 61 35 30.32 30.26 30.17 10 10 9 9 3 14 0.00  
15 78 68 58 68 60 48 90 75 60 30.17 30.10 30.02 10 8 2 18 8 25 0.03 Rain
16 67 61 54 57 54 51 93 78 63 30.23 30.18 30.09 10 8 4 10 4 13 T Rain
17 67 60 53 58 54 50 93 83 72 30.09 30.00 29.93 10 9 7 13 6 16 0.08 Rain
18 75 68 60 56 55 52 78 62 46 30.09 30.03 29.99 10 10 9 14 7 18 0.00  
19 80 68 56 59 55 52 86 67 48 30.10 30.05 29.99 10 10 7 16 7 30 0.00  
20 87 76 65 70 65 59 87 69 51 30.04 29.95 29.88 10 10 10 17 8 26 0.00  
21 79 68 57 69 56 46 87 61 35 30.16 30.00 29.87 10 10 10 22 11 31 0.00  
22 75 64 53 52 49 46 83 60 36 30.31 30.24 30.17 10 10 10 9 2 15 0.00  
23 75 63 51 51 49 48 89 64 38 30.33 30.27 30.22 10 10 10 12 5 16 0.00  
24 79 66 53 52 50 46 83 58 32 30.30 30.24 30.19 10 10 9 9 5 14 0.00  
25 85 73 61 59 55 51 73 54 34 30.26 30.20 30.14 10 10 10 8 4 - 0.00  
26 84 74 64 60 58 57 78 61 43 30.20 30.16 30.12 10 10 10 10 4 14 0.00  
27 84 73 62 60 57 54 84 62 40 30.18 30.13 30.08 10 10 9 12 3 14 0.00  
28 86 73 60 59 55 51 84 58 32 30.13 30.09 30.04 10 10 10 12 1 - 0.00  
29 88 75 61 61 58 55 90 62 34 30.06 30.00 29.93 10 10 7 9 3 14 0.00  
30 87 74 61 60 58 55 84 61 37 29.95 29.91 29.85 10 10 7 10 4 13 0.00