Weather History for Cahokia, IL

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Tuesday, August 21, 2012

  Actual Average Record
Temperature  
Mean Temperature 73 °F -  
Max Temperature 89 °F 86 °F 102 °F (2003)
Min Temperature 57 °F 66 °F 53 °F (1999)
Cooling Degree Days 8    
Growing Degree Days 23 (Base 50)    
Moisture  
Dew Point 54 °F    
Average Humidity 57    
Maximum Humidity 90    
Minimum Humidity 27    
Precipitation  
Precipitation 0.01 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.02 in    
Wind  
Wind Speed 1 mph (ENE)    
Max Wind Speed 9 mph    
Max Gust Speed -    
Visibility 10 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Aug. 21, 2012 Rise Set
Actual Time 6:20 AM CDT 7:45 PM CDT
Civil Twilight 5:52 AM CDT 8:13 PM CDT
Nautical Twilight 5:19 AM CDT 8:47 PM CDT
Astronomical Twilight 4:44 AM CDT 9:22 PM CDT
Moon 10:46 AM CDT (8/21) 9:50 PM CDT (8/21)
Length of Visible Light 14h 20m
Length of Day
13h 25m
Waxing Crescent, 19% of the Moon is Illuminated
Aug 21
Waxing Crescent
Aug 24
First Quarter
Aug 31
Full
Sep 8
Last Quarter
Sep 15
New

Hourly Weather History & Observations

Time (CDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 59.0 °F - 54.0 °F 83% 29.98 in 10.0 mi Calm Calm - N/A   Clear
1:53 AM 57.9 °F - 54.0 °F 87% 29.98 in 10.0 mi Calm Calm - N/A   Clear
2:53 AM 57.9 °F - 54.0 °F 87% 29.99 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:53 AM 60.1 °F - 55.0 °F 83% 29.99 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:53 AM 57.9 °F - 55.0 °F 90% 30.04 in 10.0 mi Calm Calm - N/A   Clear
7:53 AM 62.1 °F - 55.9 °F 80% 30.04 in 10.0 mi Calm Calm - N/A   Clear
8:53 AM 71.1 °F - 57.0 °F 61% 30.04 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:53 AM 75.0 °F - 57.9 °F 55% 30.05 in 10.0 mi Calm Calm - 0.01 in   Scattered Clouds
11:53 AM 82.0 °F - 52.0 °F 35% 30.04 in 10.0 mi Calm Calm - N/A   Partly Cloudy
12:53 PM 84.9 °F - 51.1 °F 31% 30.04 in 10.0 mi East 4.6 mph - N/A   Clear
1:53 PM 84.9 °F - 52.0 °F 32% 30.02 in 10.0 mi Calm Calm - N/A   Clear
2:53 PM 87.1 °F - 51.1 °F 29% 30.01 in 10.0 mi WNW 5.8 mph - N/A   Scattered Clouds
3:53 PM 89.1 °F - 51.1 °F 27% 29.99 in 10.0 mi NNE 8.1 mph - N/A   Scattered Clouds
5:53 PM 87.1 °F - 52.0 °F 30% 30.00 in 10.0 mi NE 9.2 mph - N/A   Clear
6:53 PM 84.9 °F 83.3 °F 54.0 °F 34% 30.00 in 10.0 mi NE 5.8 mph - N/A   Clear
7:53 PM 75.0 °F - 57.0 °F 53% 30.01 in 10.0 mi ESE 4.6 mph - N/A   Clear
8:53 PM 72.0 °F - 55.9 °F 57% 30.03 in 10.0 mi Calm Calm - N/A   Clear
9:53 PM 71.1 °F - 55.9 °F 59% 30.04 in 10.0 mi South 3.5 mph - N/A   Clear
10:53 PM 69.1 °F - 57.0 °F 65% 30.05 in 10.0 mi SSE 3.5 mph - N/A   Clear
11:53 PM 68.0 °F - 57.0 °F 68% 30.04 in 10.0 mi Calm Calm - N/A   Clear