St. Louis, MO

7:14 AM CST on January 22, 2018 (GMT -0600)
Lambert-Saint Louis International

Weather History for KSTL - September, 2015

Change the Weather History Date:

Month of September, 2015

  Max Avg Min Sum
Temperature  
Max Temperature 96 °F 85 °F 70 °F
Mean Temperature 86 °F 75 °F 62 °F
Min Temperature 77 °F 65 °F 51 °F
Degree Days  
Heating Degree Days (base 65) 3 0 0 6
Cooling Degree Days (base 65) 21 10 0 314
Growing Degree Days (base 50) 36 25 12 748
Dew Point  
Dew Point 73 °F 60 °F 41 °F
Precipitation  
Precipitation 1.35 in 0.12 in 0.00 in 3.11 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 22 mph 6 mph 0 mph
Gust Wind 29 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.21 in 30.02 in 29.76 in

Monthly Weather History Graph

Monthly Weather History Graph

Search for Another Location

Airport or City:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Sep. 18, 2015 Rise Set
Actual Time 6:45 AM CDT 7:05 PM CDT
Civil Twilight 6:18 AM CDT 7:31 PM CDT
Nautical Twilight 5:47 AM CDT 8:02 PM CDT
Astronomical Twilight 5:15 AM CDT 8:34 PM CDT
Moon 11:34 AM CDT (9/18) 10:12 PM CDT (9/18)
Length of Visible Light 13h 13m
Length of Day
12h 19m
Waxing Crescent, 25% of the Moon is Illuminated
Sep 18
Waxing Crescent
Sep 21
First Quarter
Sep 27
Full
Oct 4
Last Quarter
Oct 12
New

Daily Weather History & Observations

2015 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 93 84 75 71 69 67 82 62 41 30.06 30.03 30.00 10 10 7 14 7 20 0.00  
2 94 85 75 69 67 62 79 58 36 30.07 30.01 29.95 10 10 10 15 5 20 0.00  
3 94 85 76 69 67 65 76 59 41 29.99 29.94 29.88 10 10 7 14 5 20 0.00  
4 96 86 76 70 68 66 74 57 39 30.01 29.96 29.92 10 10 7 10 4 16 0.00  
5 93 84 74 69 67 64 79 60 41 30.07 30.03 29.99 10 9 8 12 5 17 0.00  
6 96 86 76 69 66 63 74 55 36 30.05 30.00 29.95 10 9 6 14 7 17 0.00  
7 91 84 77 71 69 67 74 63 52 30.01 29.97 29.91 10 9 7 14 7 18 0.00  
8 91 81 70 73 70 67 88 70 52 29.94 29.89 29.83 10 9 2 22 8 28 1.35 Rain , Thunderstorm
9 86 79 72 70 68 66 87 73 58 29.96 29.92 29.86 10 8 1 12 3 14 0.11 Rain , Thunderstorm
10 88 79 69 68 65 60 90 68 46 29.95 29.89 29.83 10 10 4 18 4 24 0.32 Rain , Thunderstorm
11 77 68 59 64 59 48 87 64 41 30.06 29.96 29.85 10 10 3 22 10 26 0.30 Rain , Thunderstorm
12 70 62 54 48 46 42 83 61 39 30.10 30.07 30.04 10 10 10 18 8 24 0.00  
13 75 63 51 50 45 41 83 56 29 30.13 30.07 30.01 10 10 10 12 5 17 0.00  
14 83 72 60 57 52 48 64 52 39 30.12 30.07 30.03 10 10 10 17 10 23 0.00  
15 85 73 60 56 54 51 78 55 32 30.21 30.16 30.12 10 10 9 21 11 24 0.00  
16 87 75 62 62 58 54 72 57 42 30.21 30.14 30.06 10 10 10 18 9 24 0.00  
17 91 81 71 67 63 59 68 56 44 30.05 29.96 29.85 10 10 10 20 11 26 0.00  
18 92 84 76 69 66 64 69 58 47 29.90 29.83 29.76 10 10 10 16 10 22 T Thunderstorm
19 81 70 59 70 56 50 76 60 43 30.11 29.98 29.77 10 10 9 21 10 29 T Rain
20 76 67 57 53 49 46 80 59 38 30.18 30.12 30.06 10 10 10 14 3 17 0.00  
21 79 68 56 54 51 48 80 58 35 30.14 30.08 30.03 10 10 9 13 4 17 0.00  
22 83 71 59 56 53 48 78 55 31 30.18 30.13 30.07 10 10 9 10 3 14 0.00  
23 85 72 59 56 53 49 78 54 29 30.20 30.15 30.11 10 10 9 10 3 15 0.00  
24 85 73 60 57 54 51 78 56 34 30.18 30.14 30.11 10 10 7 13 3 16 0.00  
25 86 73 60 58 54 48 84 57 29 30.15 30.11 30.05 10 10 7 15 5 18 0.00  
26 77 70 62 60 57 53 73 65 57 30.14 30.09 30.06 10 10 10 16 7 21 0.00  
27 77 73 68 66 63 60 79 72 64 30.08 30.02 29.97 10 10 10 10 6 14 T Rain
28 84 75 66 66 64 61 87 69 51 30.03 29.97 29.91 10 8 3 12 4 16 T  
29 79 71 63 66 64 56 87 75 62 30.05 29.94 29.89 10 8 1 17 6 21 1.03 Rain
30 72 64 56 55 48 42 73 54 35 30.16 30.10 30.02 10 10 10 17 10 23 0.00