Weather History for St. Louis, MO

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Saturday, September 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 63 °F 68 °F  
Max Temperature 73 °F 78 °F 97 °F (1881)
Min Temperature 53 °F 58 °F 40 °F (1983)
Degree Days  
Heating Degree Days 2 2  
Month to date heating degree days 2 13  
Since 1 July heating degree days 2 14  
Cooling Degree Days 0 5  
Month to date cooling degree days 231 169  
Year to date cooling degree days 1617 1568  
Growing Degree Days 12 (Base 50)    
Moisture  
Dew Point 51 °F    
Average Humidity 70    
Maximum Humidity 100    
Minimum Humidity 39    
Precipitation  
Precipitation 0.00 in 0.10 in 1.78 in (1947)
Month to date precipitation 2.73 2.16  
Year to date precipitation 37.34 29.91  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2013)
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 29.94 in    
Wind  
Wind Speed 6 mph (NW)    
Max Wind Speed 16 mph    
Max Gust Speed 21 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Sep. 21, 2013 Rise Set
Actual Time 6:48 AM CDT 6:59 PM CDT
Civil Twilight 6:21 AM CDT 7:26 PM CDT
Nautical Twilight 5:50 AM CDT 7:57 PM CDT
Astronomical Twilight 5:19 AM CDT 8:28 PM CDT
Moon 8:12 PM CDT (9/21) 9:05 AM CDT (9/21)
Length of Visible Light 13h 04m
Length of Day
12h 11m
Waning Gibbous, 94% of the Moon is Illuminated
Sep 21
Waning Gibbous
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

Hourly Weather History & Observations

Time (CDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 60.8 °F 53.6 °F 77% 29.92 in 10.0 mi WNW 6.9 mph - N/A   Mostly Cloudy
1:51 AM 59.0 °F 53.6 °F 82% 29.92 in 10.0 mi WNW 6.9 mph - N/A   Scattered Clouds
2:51 AM 57.2 °F 53.6 °F 88% 29.91 in 10.0 mi WNW 8.1 mph - N/A   Partly Cloudy
3:51 AM 57.2 °F 53.6 °F 88% 29.91 in 10.0 mi WNW 8.1 mph - N/A   Clear
4:51 AM 55.4 °F 53.6 °F 94% 29.91 in 10.0 mi WNW 6.9 mph - N/A   Clear
5:51 AM 55.4 °F 53.6 °F 94% 29.93 in 10.0 mi WNW 6.9 mph - N/A   Clear
6:51 AM 53.6 °F 53.6 °F 100% 29.94 in 10.0 mi WNW 8.1 mph - N/A   Partly Cloudy
7:51 AM 57.2 °F 55.4 °F 94% 29.95 in 10.0 mi WNW 4.6 mph - N/A   Partly Cloudy
8:51 AM 59.0 °F 53.6 °F 82% 29.96 in 10.0 mi NW 12.7 mph - N/A   Partly Cloudy
9:51 AM 60.8 °F 48.2 °F 63% 29.97 in 10.0 mi NW 12.7 mph - N/A   Partly Cloudy
10:51 AM 68.0 °F 42.8 °F 40% 29.98 in 10.0 mi North 10.4 mph - N/A   Partly Cloudy
11:51 AM 69.8 °F 46.4 °F 43% 29.97 in 10.0 mi NNW 12.7 mph 17.3 mph N/A   Partly Cloudy
12:51 PM 68.0 °F 46.4 °F 46% 29.96 in 10.0 mi NW 15.0 mph - N/A   Partly Cloudy
1:51 PM 69.8 °F 50.0 °F 49% 29.94 in 10.0 mi NW 10.4 mph 19.6 mph N/A   Partly Cloudy
2:51 PM 69.8 °F 50.0 °F 49% 29.93 in 10.0 mi NW 11.5 mph - N/A   Partly Cloudy
3:51 PM 69.8 °F 48.2 °F 46% 29.92 in 10.0 mi NW 12.7 mph 17.3 mph N/A   Partly Cloudy
4:51 PM 71.6 °F 48.2 °F 43% 29.91 in 10.0 mi NW 10.4 mph - N/A   Partly Cloudy
5:51 PM 71.6 °F 48.2 °F 43% 29.92 in 10.0 mi NW 9.2 mph - N/A   Clear
6:51 PM 68.0 °F 50.0 °F 52% 29.91 in 10.0 mi WNW 8.1 mph - N/A   Clear
7:51 PM 64.4 °F 50.0 °F 59% 29.92 in 10.0 mi WNW 5.8 mph - N/A   Clear
8:51 PM 64.4 °F 50.0 °F 59% 29.94 in 10.0 mi WNW 4.6 mph - N/A   Clear
9:51 PM 62.6 °F 51.8 °F 68% 29.94 in 10.0 mi Calm Calm - N/A   Clear
10:51 PM 59.0 °F 51.8 °F 77% 29.94 in 10.0 mi Calm Calm - N/A   Clear
11:51 PM 59.0 °F 51.8 °F 77% 29.95 in 10.0 mi Calm Calm - N/A   Clear