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Weather for Alton, IL
Last Updated on Feb 24 2017, 9:45 pm CST
Right Now
novc.png
Overcast and Breezy
39°
Dew Point: 30°
Humidity: 70%
Pressure: 29.79 in
Visibility: 10.00 miles
Winds: from the West at 20.7 gusting to 24.2 MPH (18 gusting to 21 KT)
By the Hour
Dewpoint: 26°
12:00 AM
http://forecast.weather.gov/images/wtf/novc.jpg
36°
Humidity: 67%
Wind: 20 mph
Dewpoint: 22°
3:00 AM
http://forecast.weather.gov/images/wtf/novc.jpg
31°
Humidity: 69%
Wind: 21 mph
Dewpoint: 19°
6:00 AM
http://forecast.weather.gov/images/wtf/novc.jpg
29°
Humidity: 65%
Wind: 20 mph
Dewpoint: 17°
9:00 AM
http://forecast.weather.gov/images/wtf/bkn.jpg
28°
Humidity: 63%
Wind: 20 mph
Dewpoint: 14°
12:00 PM
http://forecast.weather.gov/images/wtf/sct.jpg
34°
Humidity: 43%
Wind: 18 mph
Dewpoint: 13°
3:00 PM
http://forecast.weather.gov/images/wtf/few.jpg
39°
Humidity: 34%
Wind: 17 mph
Dewpoint: 13°
6:00 PM
http://forecast.weather.gov/images/wtf/nfew.jpg
37°
Humidity: 37%
Wind: 7 mph
Dewpoint: 16°
9:00 PM
http://forecast.weather.gov/images/wtf/nfew.jpg
32°
Humidity: 51%
Wind: 4 mph
Find Weather

5 Day Forecast
Sunday
High 48°
Low 26°
Monday
High 55°
Low 35°
Tuesday
High 65°
Low 45°
Wednesday
High 51°
Low 42°
Thursday
High 53°
Low 32°
    By the Hour
    Dewpoint: 16°
    12:00 AM
    http://forecast.weather.gov/images/wtf/nfew.jpg
    28°
    Humidity: 60%
    Wind: 2 mph
    Dewpoint: 17°
    3:00 AM
    http://forecast.weather.gov/images/wtf/nfew.jpg
    27°
    Humidity: 66%
    Wind: 4 mph
    Dewpoint: 18°
    6:00 AM
    http://forecast.weather.gov/images/wtf/nsct.jpg
    27°
    Humidity: 68%
    Wind: 6 mph
    Dewpoint: 20°
    9:00 AM
    http://forecast.weather.gov/images/wtf/bkn.jpg
    36°
    Humidity: 51%
    Wind: 10 mph
    Dewpoint: 22°
    12:00 PM
    http://forecast.weather.gov/images/wtf/ra40.jpg
    47°
    Humidity: 36%
    Wind: 12 mph
    Dewpoint: 26°
    3:00 PM
    http://forecast.weather.gov/images/wtf/ra40.jpg
    47°
    Humidity: 44%
    Wind: 11 mph
    Dewpoint: 30°
    6:00 PM
    http://forecast.weather.gov/images/wtf/nra40.jpg
    43°
    Humidity: 60%
    Wind: 7 mph
    Dewpoint: 32°
    9:00 PM
    http://forecast.weather.gov/images/wtf/nra30.jpg
    41°
    Humidity: 71%
    Wind: 6 mph
    By the Hour
    Dewpoint: 32°
    12:00 AM
    http://forecast.weather.gov/images/wtf/nra30.jpg
    38°
    Humidity: 79%
    Wind: 4 mph
    Dewpoint: 33°
    3:00 AM
    http://forecast.weather.gov/images/wtf/nra30.jpg
    36°
    Humidity: 88%
    Wind: 5 mph
    Dewpoint: 32°
    6:00 AM
    http://forecast.weather.gov/images/wtf/nbkn.jpg
    35°
    Humidity: 88%
    Wind: 5 mph
    Dewpoint: 36°
    9:00 AM
    http://forecast.weather.gov/images/wtf/bkn.jpg
    41°
    Humidity: 82%
    Wind: 6 mph
    Dewpoint: 41°
    12:00 PM
    http://forecast.weather.gov/images/wtf/ra20.jpg
    52°
    Humidity: 66%
    Wind: 9 mph
    Dewpoint: 41°
    3:00 PM
    http://forecast.weather.gov/images/wtf/ra20.jpg
    55°
    Humidity: 59%
    Wind: 9 mph
    Dewpoint: 43°
    6:00 PM
    http://forecast.weather.gov/images/wtf/nra20.jpg
    50°
    Humidity: 77%
    Wind: 7 mph
    By the Hour
    Dewpoint: 44°
    12:00 AM
    http://forecast.weather.gov/images/wtf/nra80.jpg
    45°
    Humidity: 97%
    Wind: 6 mph
    Dewpoint: 44°
    6:00 AM
    http://forecast.weather.gov/images/wtf/nbkn.jpg
    46°
    Humidity: 93%
    Wind: 6 mph
    Dewpoint: 49°
    12:00 PM
    http://forecast.weather.gov/images/wtf/ra20.jpg
    63°
    Humidity: 60%
    Wind: 12 mph
    Dewpoint: 48°
    6:00 PM
    http://forecast.weather.gov/images/wtf/nra20.jpg
    60°
    Humidity: 65%
    Wind: 9 mph
    By the Hour
    Dewpoint: 44°
    12:00 AM
    http://forecast.weather.gov/images/wtf/nra40.jpg
    51°
    Humidity: 77%
    Wind: 7 mph
    Dewpoint: 38°
    6:00 AM
    http://forecast.weather.gov/images/wtf/nra40.jpg
    42°
    Humidity: 85%
    Wind: 9 mph
    Dewpoint: 36°
    12:00 PM
    http://forecast.weather.gov/images/wtf/ra30.jpg
    48°
    Humidity: 63%
    Wind: 11 mph
    Dewpoint: 29°
    6:00 PM
    http://forecast.weather.gov/images/wtf/nsct.jpg
    46°
    Humidity: 51%
    Wind: 11 mph
    By the Hour
    Dewpoint: 26°
    12:00 AM
    http://forecast.weather.gov/images/wtf/nfew.jpg
    36°
    Humidity: 66%
    Wind: 7 mph
    Dewpoint: 25°
    6:00 AM
    http://forecast.weather.gov/images/wtf/nfew.jpg
    32°
    Humidity: 75%
    Wind: 7 mph
    Dewpoint: 25°
    12:00 PM
    http://forecast.weather.gov/images/wtf/few.jpg
    50°
    Humidity: 37%
    Wind: 12 mph
    Dewpoint: 27°
    6:00 PM
    http://forecast.weather.gov/images/wtf/nfew.jpg
    48°
    Humidity: 44%
    Wind: 11 mph
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