Weather History for Mount Vernon, IL

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Wednesday, August 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 74 °F -  
Max Temperature 89 °F 84 °F 96 °F (2003)
Min Temperature 60 °F 62 °F 53 °F (1999)
Cooling Degree Days 10    
Growing Degree Days 24 (Base 50)    
Moisture  
Dew Point 67 °F    
Average Humidity 78    
Maximum Humidity 100    
Minimum Humidity 46    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.11 in    
Wind  
Wind Speed 2 mph (SSW)    
Max Wind Speed 10 mph    
Max Gust Speed -    
Visibility 8 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, 2013 Rise Set
Actual Time 6:15 AM CDT 7:40 PM CDT
Civil Twilight 5:47 AM CDT 8:08 PM CDT
Nautical Twilight 5:14 AM CDT 8:41 PM CDT
Astronomical Twilight 4:39 AM CDT 9:16 PM CDT
Moon 7:51 PM CDT (8/21) 6:54 AM CDT (8/21)
Length of Visible Light 14h 20m
Length of Day
13h 25m
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
12:15 AM 66.2 °F - 64.4 °F 94% 30.11 in 6.0 mi Calm Calm - N/A   Clear
12:35 AM 68.0 °F - 66.2 °F 94% 30.11 in 8.0 mi Calm Calm - N/A   Clear
12:55 AM 66.2 °F - 64.4 °F 94% 30.10 in 5.0 mi Calm Calm - N/A   Clear
1:15 AM 66.2 °F - 64.4 °F 94% 30.10 in 5.0 mi Calm Calm - N/A   Clear
1:35 AM 66.2 °F - 64.4 °F 94% 30.10 in 5.0 mi Calm Calm - N/A   Clear
1:55 AM 66.2 °F - 64.4 °F 94% 30.10 in 5.0 mi Calm Calm - N/A   Clear
2:15 AM 64.4 °F - 62.6 °F 94% 30.10 in 5.0 mi Calm Calm - N/A   Clear
2:35 AM 66.2 °F - 64.4 °F 94% 30.10 in 4.0 mi Calm Calm - N/A   Clear
2:55 AM 64.4 °F - 62.6 °F 94% 30.09 in 3.0 mi Calm Calm - N/A   Clear
3:15 AM 64.4 °F - 62.6 °F 94% 30.10 in 4.0 mi Calm Calm - N/A   Clear
3:35 AM 62.6 °F - 60.8 °F 94% 30.10 in 3.0 mi Calm Calm - N/A   Clear
3:55 AM 62.6 °F - 60.8 °F 94% 30.09 in 4.0 mi Calm Calm - N/A   Clear
4:15 AM 62.6 °F - 62.6 °F 100% 30.09 in 5.0 mi Calm Calm - N/A   Clear
4:35 AM 64.4 °F - 62.6 °F 94% 30.10 in 6.0 mi Calm Calm - N/A   Clear
4:55 AM 64.4 °F - 62.6 °F 94% 30.10 in 6.0 mi Calm Calm - N/A   Clear
5:15 AM 62.6 °F - 60.8 °F 94% 30.11 in 5.0 mi Calm Calm - N/A   Clear
5:35 AM 62.6 °F - 60.8 °F 94% 30.11 in 2.0 mi Calm Calm - N/A   Clear
5:55 AM 62.6 °F - 60.8 °F 94% 30.12 in 2.5 mi Calm Calm - N/A   Clear
6:15 AM 62.6 °F - 60.8 °F 94% 30.13 in 2.5 mi Calm Calm - N/A   Clear
6:35 AM 60.8 °F - 59.0 °F 94% 30.13 in 2.0 mi Calm Calm - N/A   Clear
6:55 AM 62.6 °F - 60.8 °F 94% 30.14 in 4.0 mi Calm Calm - N/A   Partly Cloudy
7:15 AM 64.4 °F - 62.6 °F 94% 30.14 in 6.0 mi Calm Calm - N/A   Partly Cloudy
7:35 AM 66.2 °F - 64.4 °F 94% 30.14 in 8.0 mi Calm Calm - N/A   Clear
7:55 AM 69.8 °F - 68.0 °F 94% 30.15 in 9.0 mi Calm Calm - N/A   Clear
8:15 AM 71.6 °F - 69.8 °F 94% 30.15 in 10.0 mi Calm Calm - N/A   Clear
8:35 AM 73.4 °F - 69.8 °F 88% 30.15 in 10.0 mi SSW 4.6 mph - N/A   Clear
8:55 AM 75.2 °F - 69.8 °F 83% 30.15 in 10.0 mi Calm Calm - N/A   Clear
9:15 AM 77.0 °F - 71.6 °F 83% 30.16 in 10.0 mi SSW 3.5 mph - N/A   Clear
9:35 AM 78.8 °F - 71.6 °F 78% 30.16 in 10.0 mi Calm Calm - N/A   Clear
9:55 AM 80.6 °F 84.6 °F 71.6 °F 74% 30.17 in 10.0 mi SE 4.6 mph - N/A   Clear
10:55 AM 84.2 °F 88.4 °F 69.8 °F 62% 30.16 in 10.0 mi SW 6.9 mph - N/A   Partly Cloudy
11:15 AM 86.0 °F 91.8 °F 71.6 °F 62% 30.16 in 10.0 mi SW 8.1 mph - N/A   Clear
11:35 AM 84.2 °F 88.4 °F 69.8 °F 62% 30.15 in 10.0 mi SSW 6.9 mph - N/A   Clear
11:55 AM 86.0 °F 90.4 °F 69.8 °F 58% 30.15 in 10.0 mi South 6.9 mph - N/A   Partly Cloudy
12:15 PM 87.8 °F 93.8 °F 71.6 °F 58% 30.15 in 10.0 mi SSW 6.9 mph - N/A   Partly Cloudy
12:35 PM 86.0 °F 90.4 °F 69.8 °F 58% 30.14 in 10.0 mi SW 6.9 mph - N/A   Partly Cloudy
12:55 PM 86.0 °F 90.4 °F 69.8 °F 58% 30.14 in 10.0 mi WSW 6.9 mph - N/A   Partly Cloudy
1:15 PM 87.8 °F 91.4 °F 68.0 °F 52% 30.13 in 10.0 mi SSW 4.6 mph - N/A   Partly Cloudy
1:35 PM 87.8 °F 92.6 °F 69.8 °F 55% 30.13 in 10.0 mi SSW 8.1 mph - N/A   Clear
1:55 PM 89.6 °F 93.4 °F 68.0 °F 49% 30.12 in 10.0 mi SW 9.2 mph - N/A   Clear
2:15 PM 87.8 °F 91.4 °F 68.0 °F 52% 30.12 in 10.0 mi WSW 9.2 mph - N/A   Clear
2:35 PM 89.6 °F 93.4 °F 68.0 °F 49% 30.11 in 10.0 mi South 5.8 mph - N/A   Partly Cloudy
2:55 PM 89.6 °F 92.2 °F 66.2 °F 46% 30.10 in 10.0 mi SSW 10.4 mph - N/A   Partly Cloudy
3:15 PM 89.6 °F 93.4 °F 68.0 °F 49% 30.10 in 10.0 mi SSW 8.1 mph - N/A   Scattered Clouds
3:35 PM 89.6 °F 93.4 °F 68.0 °F 49% 30.10 in 10.0 mi South 3.5 mph - N/A   Mostly Cloudy
3:55 PM 87.8 °F 91.4 °F 68.0 °F 52% 30.09 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
4:15 PM 87.8 °F 92.6 °F 69.8 °F 55% 30.09 in 10.0 mi SSE 8.1 mph - N/A   Mostly Cloudy
4:35 PM 89.6 °F 94.7 °F 69.8 °F 52% 30.08 in 10.0 mi SSW 5.8 mph - N/A   Partly Cloudy
4:55 PM 89.6 °F 93.4 °F 68.0 °F 49% 30.08 in 10.0 mi SSW 8.1 mph - N/A   Partly Cloudy
5:15 PM 87.8 °F 91.4 °F 68.0 °F 52% 30.08 in 10.0 mi South 3.5 mph - N/A   Clear
5:35 PM 87.8 °F 92.6 °F 69.8 °F 55% 30.08 in 10.0 mi SSW 8.1 mph - N/A   Partly Cloudy
5:55 PM 87.8 °F 92.6 °F 69.8 °F 55% 30.07 in 10.0 mi SSW 6.9 mph - N/A   Clear
6:15 PM 87.8 °F 92.6 °F 69.8 °F 55% 30.07 in 10.0 mi SSW 5.8 mph - N/A   Clear
6:35 PM 86.0 °F 90.4 °F 69.8 °F 58% 30.07 in 10.0 mi SSW 4.6 mph - N/A   Clear
6:55 PM 84.2 °F 88.4 °F 69.8 °F 62% 30.07 in 10.0 mi SSE 3.5 mph - N/A   Clear
7:15 PM 82.4 °F 86.3 °F 69.8 °F 66% 30.07 in 10.0 mi Calm Calm - N/A   Clear
7:35 PM 78.8 °F - 69.8 °F 74% 30.07 in 10.0 mi Calm Calm - N/A   Clear
7:55 PM 75.2 °F - 69.8 °F 83% 30.07 in 10.0 mi Calm Calm - N/A   Clear
8:15 PM 73.4 °F - 69.8 °F 88% 30.07 in 10.0 mi Calm Calm - N/A   Clear
8:35 PM 73.4 °F - 68.0 °F 83% 30.08 in 10.0 mi Calm Calm - N/A   Clear
8:55 PM 71.6 °F - 68.0 °F 88% 30.08 in 10.0 mi Calm Calm - N/A   Clear
9:15 PM 69.8 °F - 68.0 °F 94% 30.09 in 10.0 mi Calm Calm - N/A   Clear
9:35 PM 69.8 °F - 66.2 °F 88% 30.10 in 8.0 mi Calm Calm - N/A   Clear
9:55 PM 69.8 °F - 66.2 °F 88% 30.10 in 7.0 mi Calm Calm - N/A   Clear
10:15 PM 68.0 °F - 66.2 °F 94% 30.11 in 7.0 mi Calm Calm - N/A   Clear
10:35 PM 69.8 °F - 66.2 °F 88% 30.11 in 6.0 mi Calm Calm - N/A   Clear
10:55 PM 66.2 °F - 64.4 °F 94% 30.11 in 4.0 mi Calm Calm - N/A   Clear
11:15 PM 66.2 °F - 64.4 °F 94% 30.11 in 4.0 mi Calm Calm - N/A   Clear
11:35 PM 66.2 °F - 64.4 °F 94% 30.11 in 5.0 mi Calm Calm - N/A   Clear
11:55 PM 66.2 °F - 64.4 °F 94% 30.11 in 3.0 mi Calm Calm - N/A   Clear