Alton, Illinois | Local and National Hourly Weather Forecasts | WeatherBug
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  • Tuesday
    Forecast hour icon
    3am
    30% Chance of Light Rain
    69°
    Precip 30%
    3am Tue
    69°
    Feels like 69°
    Current forecast icon
    30% Chance of Light Rain
    • Humidity
      89%
    • Wind
      SSE 13
    • Dew Point
      65°
  • Forecast hour icon
    4am
    70% Chance Rain Showers
    69°
    Precip 70%
    4am Tue
    69°
    Feels like 69°
    Current forecast icon
    70% Chance Rain Showers
    • Humidity
      90%
    • Wind
      SSE 13
    • Dew Point
      66°
  • Forecast hour icon
    5am
    Thunderstorms
    69°
    Precip 90%
    5am Tue
    69°
    Feels like 69°
    Current forecast icon
    Thunderstorms
    • Humidity
      92%
    • Wind
      SSE 13
    • Dew Point
      66°
  • 5:55a
    Forecast hour icon
    6am
    Thunderstorms
    69°
    Precip 90%
    6am Tue
    69°
    Feels like 69°
    Current forecast icon
    Thunderstorms
    • Humidity
      93%
    • Wind
      SSE 13
    • Dew Point
      67°
  • Forecast hour icon
    7am
    40% Chance of Rain
    70°
    Precip 40%
    7am Tue
    70°
    Feels like 70°
    Current forecast icon
    40% Chance of Rain
    • Humidity
      91%
    • Wind
      S 12
    • Dew Point
      67°
  • Forecast hour icon
    8am
    30% Chance Rain Showers
    72°
    Precip 30%
    8am Tue
    72°
    Feels like 72°
    Current forecast icon
    30% Chance Rain Showers
    • Humidity
      87%
    • Wind
      S 13
    • Dew Point
      68°
  • Forecast hour icon
    9am
    30% Chance Rain Showers
    74°
    Precip 30%
    9am Tue
    74°
    Feels like 74°
    Current forecast icon
    30% Chance Rain Showers
    • Humidity
      83%
    • Wind
      S 13
    • Dew Point
      68°
  • Forecast hour icon
    10am
    30% Chance Rain Showers
    76°
    Precip 30%
    10am Tue
    76°
    Feels like 76°
    Current forecast icon
    30% Chance Rain Showers
    • Humidity
      77%
    • Wind
      SSW 14
    • Dew Point
      68°
  • Forecast hour icon
    11am
    30% Chance Rain Showers
    78°
    Precip 30%
    11am Tue
    78°
    Feels like 78°
    Current forecast icon
    30% Chance Rain Showers
    • Humidity
      72%
    • Wind
      SSW 15
    • Dew Point
      68°
  • Forecast hour icon
    12pm
    Partly Cloudy
    80°
    Precip 20%
    12pm Tue
    80°
    Feels like 83°
    Current forecast icon
    Partly Cloudy
    • Humidity
      67%
    • Wind
      SW 15
    • Dew Point
      68°
  • Forecast hour icon
    1pm
    Partly Cloudy
    81°
    Precip 10%
    1pm Tue
    81°
    Feels like 83°
    Current forecast icon
    Partly Cloudy
    • Humidity
      64%
    • Wind
      SW 15
    • Dew Point
      67°
  • Forecast hour icon
    2pm
    Sunny
    82°
    Precip 0%
    2pm Tue
    82°
    Feels like 84°
    Current forecast icon
    Sunny
    • Humidity
      60%
    • Wind
      WSW 15
    • Dew Point
      66°