Weather History for Alton, IL

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Sunday, October 7, 2012

  Actual Average Record
Temperature  
Mean Temperature 46 °F -  
Max Temperature 56 °F 69 °F 91 °F (2007)
Min Temperature 37 °F 48 °F 30 °F (2000)
Degree Days  
Heating Degree Days 19    
Moisture  
Dew Point 32 °F    
Average Humidity 68    
Maximum Humidity 89    
Minimum Humidity 23    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.23 in    
Wind  
Wind Speed 5 mph (WNW)    
Max Wind Speed 12 mph    
Max Gust Speed 17 mph    
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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Date:

Astronomy

Oct. 07, 2012 Rise Set
Actual Time 7:02 AM CDT 6:32 PM CDT
Civil Twilight 6:35 AM CDT 6:59 PM CDT
Nautical Twilight 6:04 AM CDT 7:30 PM CDT
Astronomical Twilight 5:33 AM CDT 8:01 PM CDT
Moon 11:46 PM CDT (10/7) 1:37 PM CDT (10/7)
Length of Visible Light 12h 23m
Length of Day
11h 30m
Waning Gibbous, 56% of the Moon is Illuminated
Oct 7
Waning Gibbous
Oct 8
Last Quarter
Oct 15
New
Oct 21
First Quarter
Oct 29
Full

Hourly Weather History & Observations

Time (CDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 42.1 °F 38.4 °F 36.0 °F 79% 30.25 in 10.0 mi WNW 5.8 mph - N/A   Overcast
12:35 AM 41.9 °F 39.0 °F 35.2 °F 77% 30.24 in 10.0 mi WNW 4.6 mph - N/A   Overcast
12:55 AM 42.8 °F 40.1 °F 35.6 °F 76% 30.24 in 10.0 mi WNW 4.6 mph - N/A   Overcast
1:15 AM 43.3 °F 40.7 °F 34.3 °F 71% 30.24 in 10.0 mi WNW 4.6 mph - N/A   Overcast
1:35 AM 43.7 °F 41.1 °F 34.3 °F 70% 30.25 in 10.0 mi WNW 4.6 mph - N/A   Overcast
1:55 AM 43.7 °F 41.1 °F 34.2 °F 69% 30.24 in 10.0 mi WNW 4.6 mph - N/A   Overcast
2:15 AM 43.3 °F 41.7 °F 34.9 °F 72% 30.25 in 10.0 mi WNW 3.5 mph - N/A   Mostly Cloudy
2:35 AM 43.3 °F 40.7 °F 35.2 °F 73% 30.25 in 10.0 mi WNW 4.6 mph - N/A   Overcast
2:55 AM 43.3 °F 41.7 °F 35.2 °F 73% 30.24 in 10.0 mi WNW 3.5 mph - N/A   Overcast
3:15 AM 42.8 °F 39.3 °F 35.6 °F 76% 30.25 in 10.0 mi WNW 5.8 mph - N/A   Overcast
3:35 AM 42.6 °F 39.9 °F 35.8 °F 77% 30.24 in 10.0 mi WNW 4.6 mph - N/A   Overcast
3:55 AM 42.8 °F 41.1 °F 35.6 °F 76% 30.24 in 10.0 mi WNW 3.5 mph - N/A   Scattered Clouds
4:15 AM 42.4 °F 39.6 °F 35.8 °F 77% 30.24 in 10.0 mi WNW 4.6 mph - N/A   Clear
4:35 AM 42.1 °F 39.2 °F 35.8 °F 78% 30.24 in 10.0 mi WNW 4.6 mph - N/A   Clear
4:55 AM 42.1 °F 39.2 °F 35.8 °F 78% 30.24 in 10.0 mi WNW 4.6 mph - N/A   Clear
5:15 AM 42.3 °F 39.4 °F 35.6 °F 77% 30.24 in 10.0 mi WNW 4.6 mph - N/A   Clear
5:35 AM 41.4 °F 38.4 °F 35.2 °F 79% 30.24 in 10.0 mi WNW 4.6 mph - N/A   Clear
5:55 AM 40.5 °F 37.3 °F 35.1 °F 81% 30.24 in 10.0 mi WNW 4.6 mph - N/A   Scattered Clouds
6:15 AM 39.6 °F 36.3 °F 34.3 °F 82% 30.25 in 10.0 mi WNW 4.6 mph - N/A   Scattered Clouds
6:35 AM 37.9 °F 33.5 °F 33.3 °F 83% 30.25 in 10.0 mi WNW 5.8 mph - N/A   Clear
6:55 AM 37.4 °F 32.8 °F 33.1 °F 84% 30.25 in 10.0 mi WNW 5.8 mph - N/A   Clear
10:55 AM 50.0 °F - 24.8 °F 37% 30.28 in 10.0 mi WNW 10.4 mph - N/A   Scattered Clouds
12:50 PM 53.6 °F - 23.0 °F 30% 30.26 in 10.0 mi WNW 11.5 mph 17.3 mph N/A   Scattered Clouds
1:50 PM 55.4 °F - 23.0 °F 29% 30.24 in 10.0 mi WNW 9.2 mph 16.1 mph N/A   Scattered Clouds
2:50 PM 55.4 °F - 23.0 °F 29% 30.22 in 10.0 mi WNW 9.2 mph 15.0 mph N/A   Partly Cloudy
3:50 PM 55.4 °F - 17.6 °F 23% 30.19 in 10.0 mi NNW 8.1 mph - N/A   Partly Cloudy
4:50 PM 55.4 °F - 17.6 °F 23% 30.19 in 10.0 mi NW 11.5 mph - N/A   Partly Cloudy
5:50 PM 53.6 °F - 19.4 °F 26% 30.18 in 10.0 mi NNW 6.9 mph - N/A   Partly Cloudy
6:50 PM 50.0 °F - 23.0 °F 35% 30.18 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:50 PM 44.6 °F - 32.0 °F 61% 30.20 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:50 PM 42.8 °F - 35.6 °F 76% 30.21 in 10.0 mi Calm Calm - N/A   Partly Cloudy
9:50 PM 39.2 °F - 33.8 °F 81% 30.21 in 10.0 mi Calm Calm - N/A   Clear
10:15 PM 39.2 °F - 34.0 °F 82% 30.21 in 10.0 mi Calm Calm - N/A   Clear
10:35 PM 38.1 °F - 34.2 °F 86% 30.21 in 10.0 mi Calm Calm - N/A   Clear
10:55 PM 39.2 °F - 35.1 °F 85% 30.21 in 10.0 mi Calm Calm - N/A   Clear
11:15 PM 38.8 °F - 34.9 °F 86% 30.21 in 10.0 mi Calm Calm - N/A   Clear
11:35 PM 38.5 °F - 34.7 °F 86% 30.20 in 10.0 mi Calm Calm - N/A   Clear
11:55 PM 37.8 °F - 34.7 °F 89% 30.19 in 10.0 mi Calm Calm - N/A   Clear