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Weather for Alton, IL
Last Updated on Aug 20 2017, 7:50 am CDT
Right Now
bkn.png
Mostly Cloudy
70°
Dew Point: 69°
Humidity: 100%
Pressure: 30.02 in
Visibility: 10.00 miles
Winds: Variable at 4.6 MPH (4 KT)
By the Hour
Dewpoint: 70°
10:00 AM
http://forecast.weather.gov/images/wtf/tsra30.jpg
feels like
78°
Humidity: 76%
Wind: 4 mph
Dewpoint: 69°
1:00 PM
http://forecast.weather.gov/images/wtf/scttsra30.jpg
feels like
91°
Humidity: 56%
Wind: 4 mph
Dewpoint: 68°
4:00 PM
http://forecast.weather.gov/images/wtf/sct.jpg
feels like
97°
Humidity: 44%
Wind: 4 mph
Dewpoint: 69°
7:00 PM
http://forecast.weather.gov/images/wtf/scttsra30.jpg
feels like
94°
Humidity: 52%
Wind: 4 mph
Dewpoint: 69°
10:00 PM
http://forecast.weather.gov/images/wtf/nsct.jpg
feels like
79°
Humidity: 72%
Wind: 5 mph
Find Weather

5 Day Forecast
Monday
High 97°
Low 73°
http://forecast.weather.gov/images/wtf/tsra20.jpg
Tuesday
High 90°
Low 73°
http://forecast.weather.gov/images/wtf/tsra60.jpg
Wednesday
High 80°
Low 60°
http://forecast.weather.gov/images/wtf/few.jpg
Thursday
High 77°
Low 58°
http://forecast.weather.gov/images/wtf/sct.jpg
Friday
High 78°
Low 58°
http://forecast.weather.gov/images/wtf/sct.jpg
    By the Hour
    Dewpoint: 69°
    1:00 AM
    http://forecast.weather.gov/images/wtf/nsct.jpg
    feels like
    76°
    Humidity: 79%
    Wind: 0 mph
    Dewpoint: 69°
    4:00 AM
    http://forecast.weather.gov/images/wtf/nsct.jpg
    feels like
    73°
    Humidity: 87%
    Wind: 4 mph
    Dewpoint: 70°
    7:00 AM
    http://forecast.weather.gov/images/wtf/sct.jpg
    feels like
    73°
    Humidity: 90%
    Wind: 3 mph
    Dewpoint: 73°
    10:00 AM
    http://forecast.weather.gov/images/wtf/sct.jpg
    feels like
    92°
    Humidity: 67%
    Wind: 5 mph
    Dewpoint: 73°
    1:00 PM
    http://forecast.weather.gov/images/wtf/tsra20.jpg
    feels like
    95°
    Humidity: 63%
    Wind: 6 mph
    Dewpoint: 72°
    4:00 PM
    http://forecast.weather.gov/images/wtf/tsra20.jpg
    feels like
    97°
    Humidity: 56%
    Wind: 6 mph
    Dewpoint: 73°
    7:00 PM
    http://forecast.weather.gov/images/wtf/bkn.jpg
    feels like
    92°
    Humidity: 68%
    Wind: 6 mph
    Dewpoint: 71°
    10:00 PM
    http://forecast.weather.gov/images/wtf/nsct.jpg
    feels like
    79°
    Humidity: 77%
    Wind: 5 mph
    By the Hour
    Dewpoint: 72°
    1:00 AM
    http://forecast.weather.gov/images/wtf/ntsra50.jpg
    feels like
    78°
    Humidity: 82%
    Wind: 6 mph
    Dewpoint: 71°
    4:00 AM
    http://forecast.weather.gov/images/wtf/ntsra50.jpg
    feels like
    75°
    Humidity: 87%
    Wind: 5 mph
    Dewpoint: 71°
    7:00 AM
    http://forecast.weather.gov/images/wtf/tsra50.jpg
    feels like
    73°
    Humidity: 94%
    Wind: 5 mph
    Dewpoint: 72°
    10:00 AM
    http://forecast.weather.gov/images/wtf/tsra60.jpg
    feels like
    79°
    Humidity: 80%
    Wind: 7 mph
    Dewpoint: 73°
    1:00 PM
    http://forecast.weather.gov/images/wtf/tsra60.jpg
    feels like
    86°
    Humidity: 77%
    Wind: 7 mph
    Dewpoint: 72°
    4:00 PM
    http://forecast.weather.gov/images/wtf/tsra60.jpg
    feels like
    90°
    Humidity: 67%
    Wind: 9 mph
    Dewpoint: 70°
    7:00 PM
    http://forecast.weather.gov/images/wtf/bkn.jpg
    feels like
    78°
    Humidity: 76%
    Wind: 7 mph
    By the Hour
    Dewpoint: 62°
    1:00 AM
    http://forecast.weather.gov/images/wtf/nfew.jpg
    feels like
    68°
    Humidity: 81%
    Wind: 6 mph
    Dewpoint: 57°
    7:00 AM
    http://forecast.weather.gov/images/wtf/few.jpg
    feels like
    60°
    Humidity: 90%
    Wind: 5 mph
    Dewpoint: 56°
    1:00 PM
    http://forecast.weather.gov/images/wtf/few.jpg
    feels like
    80°
    Humidity: 44%
    Wind: 6 mph
    Dewpoint: 55°
    7:00 PM
    http://forecast.weather.gov/images/wtf/few.jpg
    feels like
    76°
    Humidity: 48%
    Wind: 6 mph
    By the Hour
    Dewpoint: 56°
    1:00 AM
    http://forecast.weather.gov/images/wtf/nfew.jpg
    feels like
    63°
    Humidity: 78%
    Wind: 4 mph
    Dewpoint: 55°
    7:00 AM
    http://forecast.weather.gov/images/wtf/few.jpg
    feels like
    58°
    Humidity: 90%
    Wind: 4 mph
    Dewpoint: 56°
    1:00 PM
    http://forecast.weather.gov/images/wtf/sct.jpg
    feels like
    77°
    Humidity: 48%
    Wind: 5 mph
    Dewpoint: 56°
    7:00 PM
    http://forecast.weather.gov/images/wtf/few.jpg
    feels like
    75°
    Humidity: 52%
    Wind: 5 mph
    By the Hour
    Dewpoint: 56°
    1:00 AM
    http://forecast.weather.gov/images/wtf/nfew.jpg
    feels like
    61°
    Humidity: 83%
    Wind: 4 mph
    Dewpoint: 55°
    7:00 AM
    http://forecast.weather.gov/images/wtf/few.jpg
    feels like
    58°
    Humidity: 90%
    Wind: 4 mph
    Dewpoint: 56°
    1:00 PM
    http://forecast.weather.gov/images/wtf/sct.jpg
    feels like
    78°
    Humidity: 47%
    Wind: 6 mph
    Dewpoint: 57°
    7:00 PM
    http://forecast.weather.gov/images/wtf/sct.jpg
    feels like
    75°
    Humidity: 53%
    Wind: 6 mph
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National Forecast

200 W. Third Street | Alton, IL 62002
Suite 200
618.465.9850