Weather History for St. Louis, MO

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Wednesday, August 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 83 °F 78 °F  
Max Temperature 93 °F 88 °F 104 °F (2003)
Min Temperature 72 °F 69 °F 50 °F (1950)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 June heating degree days 1 5  
Since 1 July heating degree days 0 0  
Cooling Degree Days 18 13  
Month to date cooling degree days 224 301  
Year to date cooling degree days 1178 1276  
Since 1 June cooling degree days 967 1102  
Growing Degree Days 32 (Base 50)    
Moisture  
Dew Point 64 °F    
Average Humidity 59    
Maximum Humidity 79    
Minimum Humidity 38    
Precipitation  
Precipitation 0.00 in 0.09 in 2.07 in (1944)
Month to date precipitation 1.01 2.08  
Year to date precipitation 34.43 26.84  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2013)
Month to date snowfall 0.0 0.0  
Since 1 June snowfall 0.0 0.0  
Since 1 July snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.05 in    
Wind  
Wind Speed 4 mph (SW)    
Max Wind Speed 13 mph    
Max Gust Speed 16 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Aug. 21, 2013 Rise Set
Actual Time 6:20 AM CDT 7:47 PM CDT
Civil Twilight 5:53 AM CDT 8:15 PM CDT
Nautical Twilight 5:19 AM CDT 8:48 PM CDT
Astronomical Twilight 4:44 AM CDT 9:23 PM CDT
Moon 7:57 PM CDT (8/21) 7:00 AM CDT (8/21)
Length of Visible Light 14h 22m
Length of Day
13h 26m
Waxing Gibbous, 99% of the Moon is Illuminated
Aug 21
Waxing Gibbous
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter
Sep 19
Full

Hourly Weather History & Observations

Time (CDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 78.1 °F - 66.0 °F 66% 30.05 in 10.0 mi South 8.1 mph - N/A   Clear
1:51 AM 77.0 °F - 66.0 °F 69% 30.04 in 10.0 mi South 5.8 mph - N/A   Clear
2:51 AM 75.0 °F - 66.0 °F 73% 30.04 in 10.0 mi Calm Calm - N/A   Clear
3:51 AM 73.0 °F - 66.0 °F 79% 30.04 in 10.0 mi Calm Calm - N/A   Clear
4:51 AM 73.0 °F - 66.0 °F 79% 30.05 in 9.0 mi Calm Calm - N/A   Clear
5:51 AM 73.0 °F - 64.9 °F 76% 30.06 in 9.0 mi Calm Calm - N/A   Clear
6:51 AM 73.0 °F - 64.9 °F 76% 30.08 in 9.0 mi Calm Calm - N/A   Clear
7:51 AM 75.9 °F - 66.0 °F 71% 30.09 in 10.0 mi SSW 3.5 mph - N/A   Clear
8:51 AM 79.0 °F - 66.0 °F 64% 30.10 in 10.0 mi SW 4.6 mph - N/A   Partly Cloudy
9:51 AM 82.9 °F 85.0 °F 66.0 °F 56% 30.10 in 10.0 mi SSW 4.6 mph - N/A   Clear
10:51 AM 84.9 °F 87.1 °F 66.0 °F 53% 30.10 in 10.0 mi SSW 6.9 mph - N/A   Partly Cloudy
11:51 AM 87.1 °F 88.3 °F 64.0 °F 46% 30.10 in 10.0 mi WSW 9.2 mph - N/A   Partly Cloudy
12:51 PM 88.0 °F 88.4 °F 62.1 °F 42% 30.09 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:51 PM 90.0 °F 90.3 °F 62.1 °F 39% 30.06 in 10.0 mi SSW 5.8 mph - N/A   Scattered Clouds
2:51 PM 90.0 °F 90.3 °F 62.1 °F 39% 30.04 in 10.0 mi SSW 4.6 mph - N/A   Scattered Clouds
3:51 PM 91.0 °F 91.5 °F 62.1 °F 38% 30.04 in 10.0 mi WSW 10.4 mph - N/A   Scattered Clouds
4:51 PM 91.0 °F 91.5 °F 62.1 °F 38% 30.03 in 10.0 mi SW 5.8 mph - N/A   Partly Cloudy
5:51 PM 90.0 °F 90.3 °F 62.1 °F 39% 30.02 in 10.0 mi West 8.1 mph - N/A   Scattered Clouds
6:51 PM 88.0 °F 88.4 °F 62.1 °F 42% 30.01 in 10.0 mi West 8.1 mph - N/A   Scattered Clouds
7:51 PM 86.0 °F 86.3 °F 62.1 °F 44% 30.01 in 10.0 mi West 3.5 mph - N/A   Scattered Clouds
8:51 PM 84.0 °F 85.4 °F 64.0 °F 51% 30.01 in 10.0 mi SSW 3.5 mph - N/A   Scattered Clouds
9:51 PM 81.0 °F 82.7 °F 64.9 °F 58% 30.04 in 10.0 mi Calm Calm - N/A   Clear
10:51 PM 80.1 °F 81.9 °F 64.9 °F 60% 30.04 in 10.0 mi Calm Calm - N/A   Scattered Clouds
11:51 PM 79.0 °F - 64.9 °F 62% 30.05 in 10.0 mi Calm Calm - N/A   Scattered Clouds