Weather History for Alton, IL

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Thursday, October 18, 2012

  Actual Average Record
Temperature  
Mean Temperature 56 °F -  
Max Temperature 62 °F 66 °F 104 °F (2003)
Min Temperature 50 °F 44 °F 33 °F (1997)
Degree Days  
Heating Degree Days 9    
Growing Degree Days 6 (Base 50)    
Moisture  
Dew Point 39 °F    
Average Humidity 60    
Maximum Humidity 86    
Minimum Humidity 24    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.59 in    
Wind  
Wind Speed 11 mph (WSW)    
Max Wind Speed 23 mph    
Max Gust Speed 33 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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Astronomy

Oct. 18, 2012 Rise Set
Actual Time 7:13 AM CDT 6:16 PM CDT
Civil Twilight 6:46 AM CDT 6:43 PM CDT
Nautical Twilight 6:15 AM CDT 7:14 PM CDT
Astronomical Twilight 5:44 AM CDT 7:45 PM CDT
Moon 10:53 AM CDT (10/18) 8:53 PM CDT (10/18)
Length of Visible Light 11h 57m
Length of Day
11h 03m
Waxing Crescent, 14% of the Moon is Illuminated
Oct 18
Waxing Crescent
Oct 21
First Quarter
Oct 29
Full
Nov 6
Last Quarter
Nov 13
New

Hourly Weather History & Observations

Time (CDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 55.0 °F 50.7 °F 85% 29.58 in 10.0 mi WSW 8.1 mph - N/A   Clear
12:35 AM 55.0 °F 50.9 °F 86% 29.58 in 10.0 mi WSW 9.2 mph - N/A   Scattered Clouds
12:55 AM 54.7 °F 50.2 °F 85% 29.59 in 10.0 mi SW 8.1 mph - N/A   Scattered Clouds
1:35 AM 54.7 °F 49.3 °F 82% 29.59 in 10.0 mi WSW 12.7 mph - N/A   Clear
1:55 AM 54.7 °F 47.1 °F 76% 29.59 in 10.0 mi WSW 11.5 mph - N/A   Clear
2:15 AM 54.1 °F 46.0 °F 74% 29.59 in 10.0 mi West 10.4 mph - N/A   Clear
2:35 AM 53.4 °F 45.9 °F 76% 29.58 in 10.0 mi WSW 10.4 mph - N/A   Clear
2:55 AM 52.7 °F 45.5 °F 76% 29.58 in 10.0 mi WSW 10.4 mph - N/A   Clear
3:15 AM 51.8 °F 44.4 °F 76% 29.58 in 10.0 mi WSW 10.4 mph - N/A   Clear
3:35 AM 50.9 °F 43.3 °F 75% 29.58 in 10.0 mi SW 8.1 mph - N/A   Clear
3:55 AM 50.5 °F 43.2 °F 76% 29.58 in 10.0 mi SW 5.8 mph - N/A   Clear
4:15 AM 50.2 °F 42.8 °F 76% 29.58 in 10.0 mi SSW 9.2 mph - N/A   Clear
4:35 AM 51.1 °F 43.0 °F 74% 29.59 in 10.0 mi SSW 11.5 mph - N/A   Clear
5:15 AM 51.3 °F 43.3 °F 74% 29.59 in 10.0 mi SW 10.4 mph - N/A   Mostly Cloudy
5:35 AM 51.1 °F 43.7 °F 76% 29.59 in 10.0 mi SW 11.5 mph - N/A   Overcast
5:55 AM 50.9 °F 43.5 °F 76% 29.59 in 10.0 mi SSW 10.4 mph - N/A   Overcast
6:15 AM 50.7 °F 42.8 °F 74% 29.59 in 10.0 mi SW 10.4 mph 16.1 mph N/A   Scattered Clouds
6:35 AM 50.4 °F 41.9 °F 73% 29.59 in 10.0 mi SW 9.2 mph - N/A   Clear
6:50 AM 50.0 °F 41.0 °F 71% 29.59 in 10.0 mi SW 11.5 mph - N/A   Partly Cloudy
6:55 AM 50.0 °F 41.0 °F 71% 29.60 in 10.0 mi SW 9.2 mph - N/A   Clear
7:50 AM 50.0 °F 39.2 °F 66% 29.61 in 10.0 mi WSW 15.0 mph - N/A   Partly Cloudy
8:50 AM 53.6 °F 35.6 °F 51% 29.61 in 10.0 mi WSW 16.1 mph 23.0 mph N/A   Partly Cloudy
9:50 AM 55.4 °F 32.0 °F 41% 29.61 in 10.0 mi WSW 16.1 mph 23.0 mph N/A   Partly Cloudy
10:50 AM 59.0 °F 30.2 °F 34% 29.61 in 10.0 mi WSW 17.3 mph 28.8 mph N/A   Partly Cloudy
11:50 AM 60.8 °F 26.6 °F 27% 29.59 in 10.0 mi SW 20.7 mph 32.2 mph N/A   Scattered Clouds
1:50 PM 62.6 °F 24.8 °F 24% 29.57 in 10.0 mi SW 23.0 mph 31.1 mph N/A   Mostly Cloudy
2:50 PM 62.6 °F 24.8 °F 24% 29.57 in 10.0 mi SW 23.0 mph 33.4 mph N/A   Mostly Cloudy
3:50 PM 60.8 °F 24.8 °F 25% 29.58 in 10.0 mi West 18.4 mph 31.1 mph N/A   Mostly Cloudy
4:50 PM 59.0 °F 28.4 °F 31% 29.59 in 10.0 mi West 17.3 mph 24.2 mph N/A   Overcast
5:50 PM 59.0 °F 32.0 °F 36% 29.61 in 10.0 mi West 11.5 mph - N/A   Overcast
6:50 PM 59.0 °F 30.2 °F 34% 29.61 in 10.0 mi WSW 13.8 mph 23.0 mph N/A   Overcast
7:50 PM 57.2 °F 32.0 °F 38% 29.61 in 10.0 mi West 13.8 mph - N/A   Overcast
8:55 PM 55.4 °F 32.0 °F 41% 29.60 in 10.0 mi West 11.5 mph - N/A   Overcast
9:48 PM 55.4 °F 33.8 °F 44% 29.60 in 10.0 mi West 12.7 mph 24.2 mph N/A   Overcast
10:15 PM 55.6 °F 33.4 °F 43% 29.59 in 10.0 mi WSW 16.1 mph 28.8 mph N/A   Overcast