Weather History for St. Louis, MO

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Friday, October 21, 2011

  Actual Average Record
Temperature  
Mean Temperature 51 °F 57 °F  
Max Temperature 63 °F 67 °F 88 °F (1979)
Min Temperature 39 °F 48 °F 28 °F (1952)
Degree Days  
Heating Degree Days 14 9  
Month to date heating degree days 98 131  
Since 1 July heating degree days 154 172  
Cooling Degree Days 0 1  
Month to date cooling degree days 40 35  
Year to date cooling degree days 2003 1636  
Growing Degree Days 0 (Base 50)    
Moisture  
Dew Point 33 °F    
Average Humidity 52    
Maximum Humidity 76    
Minimum Humidity 27    
Precipitation  
Precipitation 0.00 in 0.11 in 0.76 in (1949)
Month to date precipitation 1.58 2.26  
Year to date precipitation 39.29 33.14  
Snow  
Snow 0.00 in 0.00 in T in (1937)
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 30.13 in    
Wind  
Wind Speed 6 mph (West)    
Max Wind Speed 16 mph    
Max Gust Speed 23 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Oct. 21, 2011 Rise Set
Actual Time 7:16 AM CDT 6:15 PM CDT
Civil Twilight 6:49 AM CDT 6:42 PM CDT
Nautical Twilight 6:18 AM CDT 7:13 PM CDT
Astronomical Twilight 5:47 AM CDT 7:43 PM CDT
Moon 1:10 AM CDT (10/21) 2:56 PM CDT (10/21)
Length of Visible Light 11h 52m
Length of Day
10h 58m
Waning Crescent, 33% of the Moon is Illuminated
Oct 21
Waning Crescent
Oct 26
New
Nov 2
First Quarter
Nov 10
Full
Nov 18
Last Quarter

Hourly Weather History & Observations

Time (CDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 43.0 °F 39.5 °F 32.0 °F 65% 30.05 in 10.0 mi West 5.8 mph - N/A   Clear
1:51 AM 43.0 °F 41.3 °F 32.0 °F 65% 30.06 in 10.0 mi West 3.5 mph - N/A   Clear
2:51 AM 42.1 °F 38.4 °F 32.0 °F 67% 30.07 in 10.0 mi West 5.8 mph - N/A   Clear
3:51 AM 41.0 °F 38.0 °F 32.0 °F 70% 30.08 in 10.0 mi West 4.6 mph - N/A   Clear
4:51 AM 39.9 °F 37.8 °F 30.9 °F 70% 30.10 in 10.0 mi West 3.5 mph - N/A   Clear
5:51 AM 39.9 °F 34.5 °F 30.9 °F 70% 30.11 in 10.0 mi West 8.1 mph - N/A   Clear
6:51 AM 39.2 °F 33.0 °F 30.2 °F 70% 30.12 in 10.0 mi West 9.2 mph - N/A   Clear
7:51 AM 39.0 °F 32.8 °F 32.0 °F 76% 30.15 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
8:51 AM 45.0 °F 40.6 °F 33.1 °F 63% 30.17 in 10.0 mi West 8.1 mph - N/A   Partly Cloudy
9:51 AM 48.2 °F - 33.8 °F 58% 30.18 in 10.0 mi West 6.9 mph - N/A   Partly Cloudy
10:51 AM 54.0 °F - 34.0 °F 47% 30.19 in 10.0 mi WNW 8.1 mph - N/A   Scattered Clouds
11:51 AM 57.9 °F - 33.1 °F 39% 30.19 in 10.0 mi West 11.5 mph - N/A   Mostly Cloudy
12:51 PM 60.1 °F - 32.0 °F 35% 30.17 in 10.0 mi WNW 12.7 mph 23.0 mph N/A   Mostly Cloudy
1:51 PM 60.1 °F - 30.0 °F 32% 30.16 in 10.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
2:51 PM 62.1 °F - 30.9 °F 31% 30.14 in 10.0 mi WNW 5.8 mph - N/A   Mostly Cloudy
3:51 PM 62.1 °F - 28.9 °F 29% 30.14 in 10.0 mi NW 6.9 mph - N/A   Partly Cloudy
4:51 PM 62.1 °F - 30.9 °F 31% 30.13 in 10.0 mi West 4.6 mph - N/A   Partly Cloudy
5:51 PM 59.0 °F - 32.0 °F 36% 30.13 in 10.0 mi SW 5.8 mph - N/A   Partly Cloudy
6:51 PM 55.9 °F - 33.1 °F 42% 30.14 in 10.0 mi SSW 4.6 mph - N/A   Partly Cloudy
7:51 PM 52.0 °F - 35.1 °F 53% 30.15 in 10.0 mi WSW 3.5 mph - N/A   Partly Cloudy
8:51 PM 46.9 °F - 37.0 °F 68% 30.15 in 10.0 mi Calm Calm - N/A   Partly Cloudy
9:51 PM 46.9 °F - 37.0 °F 68% 30.15 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:51 PM 46.0 °F - 36.0 °F 68% 30.15 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:51 PM 45.0 °F - 36.0 °F 71% 30.13 in 10.0 mi Calm Calm - N/A   Clear