Weather History for Alton, IL

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Thursday, September 26, 2013

  Actual Average Record
Temperature  
Mean Temperature 70 °F -  
Max Temperature 84 °F 74 °F 91 °F (1998)
Min Temperature 57 °F 51 °F 39 °F (2000)
Cooling Degree Days 6    
Growing Degree Days 20 (Base 50)    
Moisture  
Dew Point 59 °F    
Average Humidity 87    
Maximum Humidity 100    
Minimum Humidity 33    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.97 in    
Wind  
Wind Speed 3 mph (East)    
Max Wind Speed 14 mph    
Max Gust Speed -    
Visibility 7 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

Sep. 26, 2013 Rise Set
Actual Time 6:51 AM CDT 6:50 PM CDT
Civil Twilight 6:25 AM CDT 7:16 PM CDT
Nautical Twilight 5:54 AM CDT 7:47 PM CDT
Astronomical Twilight 5:22 AM CDT 8:19 PM CDT
Moon 11:51 PM CDT (9/26) 1:41 PM CDT (9/26)
Length of Visible Light 12h 51m
Length of Day
11h 58m
Waning Gibbous, 54% of the Moon is Illuminated
Sep 26
Waning Gibbous
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
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 61.0 °F - 59.7 °F 96% 29.89 in 7.0 mi NE 3.5 mph - N/A   Unknown
12:35 AM 60.3 °F - 59.0 °F 96% 29.89 in 5.0 mi ENE 3.5 mph - N/A   Mist
12:55 AM 61.7 °F - 60.6 °F 96% 29.89 in 10.0 mi East 3.5 mph - N/A   Unknown
1:15 AM 60.8 °F - 59.5 °F 96% 29.90 in 7.0 mi Calm Calm - N/A   Unknown
1:35 AM 60.8 °F - 59.4 °F 95% 29.90 in 7.0 mi Calm Calm - N/A   Unknown
1:55 AM 60.3 °F - 59.2 °F 96% 29.91 in 7.0 mi Calm Calm - N/A   Unknown
2:15 AM 60.1 °F - 59.0 °F 96% 29.91 in 4.0 mi East 3.5 mph - N/A   Mist
2:35 AM 60.1 °F - 59.4 °F 97% 29.91 in 7.0 mi Calm Calm - N/A   Unknown
2:55 AM 59.5 °F - 58.5 °F 96% 29.92 in 5.0 mi Calm Calm - N/A   Mist
3:15 AM 58.6 °F - 57.9 °F 97% 29.92 in 5.0 mi Calm Calm - N/A   Mist
3:35 AM 58.3 °F - 57.6 °F 97% 29.93 in 4.0 mi Calm Calm - N/A   Mist
3:55 AM 57.7 °F - 57.2 °F 98% 29.93 in 5.0 mi Calm Calm - N/A   Mist
4:15 AM 57.9 °F - 57.2 °F 97% 29.94 in 3.0 mi Calm Calm - N/A   Mist
4:35 AM 58.5 °F - 57.9 °F 98% 29.94 in 5.0 mi Calm Calm - N/A   Mist
4:55 AM 57.7 °F - 57.0 °F 97% 29.94 in 4.0 mi Calm Calm - N/A   Mist
5:15 AM 58.1 °F - 57.6 °F 98% 29.95 in 1.5 mi Calm Calm - N/A   Mist
5:35 AM 58.1 °F - 57.4 °F 97% 29.95 in 3.0 mi East 4.6 mph - N/A   Mist
5:55 AM 59.7 °F - 59.2 °F 98% 29.96 in 5.0 mi ENE 5.8 mph - N/A   Mist
6:15 AM 60.4 °F - 59.9 °F 98% 29.96 in 5.0 mi ENE 4.6 mph - N/A   Mist
6:35 AM 60.4 °F - 59.9 °F 98% 29.97 in 5.0 mi East 3.5 mph - N/A   Mist
6:50 AM 60.8 °F - 59.0 °F 94% 29.98 in 5.0 mi East 8.1 mph - N/A   Clear
6:55 AM 60.3 °F - 59.5 °F 97% 29.98 in 4.0 mi Calm Calm - N/A   Mist
7:49 AM 60.8 °F - 60.8 °F 100% 30.00 in 6.0 mi East 4.6 mph - N/A   Clear
8:51 AM 66.2 °F - 62.6 °F 88% 30.01 in 8.0 mi ESE 5.8 mph - N/A   Clear
9:52 AM 71.6 °F - 64.4 °F 78% 30.02 in 10.0 mi SSE 5.8 mph - N/A   Clear
10:50 AM 77.0 °F - 64.4 °F 65% 30.02 in 10.0 mi Variable 4.6 mph - N/A   Clear
11:50 AM 78.8 °F - 62.6 °F 57% 30.02 in 10.0 mi SSE 9.2 mph - N/A   Partly Cloudy
3:50 PM 84.2 °F - 51.8 °F 33% 29.98 in 10.0 mi ESE 8.1 mph - N/A   Scattered Clouds
5:45 PM 80.6 °F 80.3 °F 53.6 °F 39% 29.98 in 10.0 mi ESE 11.5 mph - N/A   Clear
6:45 PM 71.6 °F - 59.0 °F 64% 29.98 in 10.0 mi East 13.8 mph - N/A   Clear
7:45 PM 69.8 °F - 57.2 °F 64% 29.99 in 10.0 mi Variable 3.5 mph - N/A   Clear
8:55 PM 66.2 °F - 57.2 °F 73% 30.01 in 10.0 mi Calm Calm - N/A   Clear
9:45 PM 62.6 °F - 57.2 °F 82% 30.01 in 10.0 mi Calm Calm - N/A   Clear
10:15 PM 61.9 °F - 57.6 °F 86% 30.02 in 10.0 mi East 4.6 mph - N/A   Clear
10:35 PM 60.4 °F - 56.7 °F 87% 30.02 in 10.0 mi Calm Calm - N/A   Clear
10:55 PM 62.6 °F - 58.3 °F 86% 30.03 in 10.0 mi East 4.6 mph - N/A   Clear
11:15 PM 63.7 °F - 58.1 °F 82% 30.03 in 10.0 mi East 4.6 mph - N/A   Clear
11:35 PM 63.5 °F - 57.7 °F 81% 30.03 in 10.0 mi East 4.6 mph - N/A   Clear
11:55 PM 62.6 °F - 57.7 °F 84% 30.04 in 10.0 mi East 4.6 mph - N/A   Clear