St. Louis, MO

1:48 AM CST on February 21, 2018 (GMT -0600)
Lambert-Saint Louis International

Weather History for KSTL - September, 2011

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Friday, September 30, 2011

  Actual Average Record
Temperature  
Mean Temperature 64 °F 64 °F  
Max Temperature 73 °F 74 °F 93 °F (1952)
Min Temperature 54 °F 54 °F 36 °F (1949)
Degree Days  
Heating Degree Days 1 4  
Month to date heating degree days 56 39  
Since 1 July heating degree days 56 41  
Cooling Degree Days 0 3  
Month to date cooling degree days 145 202  
Year to date cooling degree days 1963 1601  
Growing Degree Days 14 (Base 50)    
Moisture  
Dew Point 39 °F    
Average Humidity 44    
Maximum Humidity 59    
Minimum Humidity 29    
Precipitation  
Precipitation 0.00 in 0.10 in 2.35 in (1986)
Month to date precipitation 3.18 3.13  
Year to date precipitation 37.71 30.88  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2015)
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 0.0 0.0  
Since 1 September snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.07 in    
Wind  
Wind Speed 12 mph (NW)    
Max Wind Speed 22 mph    
Max Gust Speed 30 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 30, 2011 Rise Set
Actual Time 6:56 AM CDT 6:46 PM CDT
Civil Twilight 6:29 AM CDT 7:12 PM CDT
Nautical Twilight 5:58 AM CDT 7:43 PM CDT
Astronomical Twilight 5:27 AM CDT 8:14 PM CDT
Moon 10:51 AM CDT (9/30) 8:51 PM CDT (9/30)
Length of Visible Light 12h 42m
Length of Day
11h 49m
Waxing Crescent, 15% of the Moon is Illuminated
Sep 30
Waxing Crescent
Oct 3
First Quarter
Oct 11
Full
Oct 19
Last Quarter
Oct 26
New

Hourly Weather History & Observations

Time (CDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 62.1 °F 39.9 °F 44% 29.96 in 10.0 mi WNW 10.4 mph - N/A   Clear
1:51 AM 63.0 °F 39.0 °F 41% 29.97 in 10.0 mi NW 13.8 mph 23.0 mph N/A   Clear
2:51 AM 62.6 °F 39.2 °F 42% 30.02 in 10.0 mi NW 16.1 mph 27.6 mph N/A   Clear
3:51 AM 60.1 °F 37.0 °F 42% 30.01 in 10.0 mi NW 12.7 mph - N/A   Clear
4:51 AM 57.9 °F 37.9 °F 47% 30.02 in 10.0 mi NW 12.7 mph - N/A   Clear
5:51 AM 55.0 °F 39.0 °F 55% 30.05 in 10.0 mi WNW 9.2 mph - N/A   Clear
6:51 AM 54.0 °F 39.0 °F 57% 30.06 in 10.0 mi WNW 10.4 mph - N/A   Partly Cloudy
7:51 AM 55.4 °F 39.2 °F 54% 30.09 in 10.0 mi WNW 11.5 mph - N/A   Partly Cloudy
8:51 AM 59.0 °F 41.0 °F 51% 30.10 in 10.0 mi NW 13.8 mph 21.9 mph N/A   Partly Cloudy
9:51 AM 63.0 °F 41.0 °F 45% 30.11 in 10.0 mi NNW 17.3 mph 23.0 mph N/A   Partly Cloudy
10:51 AM 64.9 °F 39.0 °F 39% 30.12 in 10.0 mi NNW 17.3 mph 25.3 mph N/A   Partly Cloudy
11:51 AM 69.1 °F 39.9 °F 35% 30.12 in 10.0 mi NNW 15.0 mph 23.0 mph N/A   Clear
12:51 PM 71.1 °F 39.0 °F 31% 30.11 in 10.0 mi NW 13.8 mph 21.9 mph N/A   Clear
1:51 PM 72.0 °F 39.0 °F 30% 30.08 in 10.0 mi NNW 16.1 mph 20.7 mph N/A   Clear
2:51 PM 72.0 °F 39.0 °F 30% 30.08 in 10.0 mi NW 12.7 mph 23.0 mph N/A   Partly Cloudy
3:51 PM 73.0 °F 39.0 °F 29% 30.06 in 10.0 mi NW 17.3 mph 23.0 mph N/A   Partly Cloudy
4:51 PM 72.0 °F 37.9 °F 29% 30.06 in 10.0 mi NW 18.4 mph 25.3 mph N/A   Partly Cloudy
5:51 PM 70.0 °F 37.9 °F 31% 30.06 in 10.0 mi NNW 15.0 mph - N/A   Partly Cloudy
6:51 PM 64.9 °F 39.9 °F 40% 30.06 in 10.0 mi NNW 6.9 mph - N/A   Partly Cloudy
7:51 PM 63.0 °F 39.9 °F 43% 30.06 in 10.0 mi NW 4.6 mph - N/A   Partly Cloudy
8:51 PM 61.0 °F 42.1 °F 50% 30.08 in 10.0 mi NNW 5.8 mph - N/A   Partly Cloudy
9:51 PM 61.0 °F 41.0 °F 48% 30.10 in 10.0 mi NNE 8.1 mph - N/A   Partly Cloudy
10:51 PM 60.1 °F 39.9 °F 47% 30.13 in 10.0 mi NNE 6.9 mph - N/A   Partly Cloudy