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    Previous 5 Days Next 5 Days
    • Thu

      Sep 29

      65° /48°
      Times of clouds and sun
      More
    • Fri

      Sep 30

      67° /45°F
      Variable cloudiness
    • Sat

      Oct 1

      67° /49°
      A couple of showers possible
      More
    • Sun

      Oct 2

      69° /47°
      Partly sunny
      More
    • Mon

      Oct 3

      63° /45°
      Plenty of sun
      More

    Day

    67°Hi RealFeel® 68° Precipitation 25%
    Variable cloudiness
    • NE 6 mph
    • Gusts: 9 mph
    • Max UV Index: 3 (Moderate)
    • Thunderstorms: 1%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    45°Lo RealFeel® 40° Precipitation 65%
    Periods of rain
    • ENE 4 mph
    • Gusts: 9 mph
    • Max UV Index: N/A
    • Thunderstorms: 1%
    • Precipitation: 0.22 in
    • Rain: 0.22 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 3.5 hrs
    • Hours of Rain: 3.5 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/30/2015
    High 67° 66° N/A 70°
    Low 45° 46° N/A 48°

    Sunrise/Sunset

    • Sunrise: 6:42 AM
    • Sunset: 6:26 PM
    • Duration: 11:44 hr

    Moonrise/Moonset

    • Moonrise: 6:10 AM
    • Moonset: 6:31 PM
    • Duration: 12:21 hr
    Astronomy

    Alton Weather Report

    Crisp fall air to bring first frost of season to parts of northeastern US

    September 25, 2016; 1:09 AM ET

    Fall air has finally arrived in the northeastern United States and may yield the first frost of the season in parts of the region this weekend. More >