Granite City, Illinois | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Saturday
    Sunny
    87°
    Forecast night icon
    Night
    Mostly Clear
    69°
    Saturday 5/18
    Day
    87°
    Sunny
    Forecast day icon
    Night
    69°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Patchy fog this morning. Sunny. Highs in the mid 80s. South winds around 5 mph.
    Night Details
    Mostly clear. Lows in the lower 60s. South winds around 5 mph.
  • Forecast day icon
    Sunday
    Sunny
    92°
    Forecast night icon
    Night
    Partly Cloudy
    71°
    Sunday 5/19
    Day
    92°
    Sunny
    Forecast day icon
    Night
    71°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the upper 80s. South winds around 5 mph.
    Night Details
    Mostly clear in the evening then becoming partly cloudy. Lows in the upper 60s. Southeast winds around 5 mph.
  • Forecast day icon
    Monday
    Mostly Sunny
    91°
    Forecast night icon
    Night
    40% Chance of Storms
    73°
    Monday 5/20
    Day
    91°
    Mostly Sunny
    Forecast day icon
    Night
    73°
    40% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent.
    Night Details
    Partly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of rain 40 percent.
  • Forecast day icon
    Tuesday
    40% Chance of Storms
    93°
    Forecast night icon
    Night
    70% Chance of Storms
    72°
    Tuesday 5/21
    Day
    93°
    40% Chance of Storms
    Forecast day icon
    Night
    72°
    70% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 40 percent.
    Night Details
    Showers and thunderstorms likely mainly in the evening. Lows in the upper 60s. Chance of rain 70 percent.
  • Forecast day icon
    Wednesday
    50% Chance of Storms
    79°
    Forecast night icon
    Night
    50% Chance of Storms
    65°
    Wednesday 5/22
    Day
    79°
    50% Chance of Storms
    Forecast day icon
    Night
    65°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Lows in the upper 50s. Chance of rain 50 percent.
    Night Details
    Partly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Lows in the upper 50s. Chance of rain 50 percent.
  • Forecast day icon
    Thursday
    Mostly Sunny
    82°
    Forecast night icon
    Night
    30% Chance of Storms
    63°
    Thursday 5/23
    Day
    82°
    Mostly Sunny
    Forecast day icon
    Night
    63°
    30% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 20 percent.
    Night Details
    Partly cloudy with a chance of showers. A chance of thunderstorms mainly in the evening. Lows in the lower 60s. Chance of rain 30 percent.
  • Forecast day icon
    Friday
    40% Chance of Storms
    79°
    Forecast night icon
    Night
    50% Chance of Storms
    67°
    Friday 5/24
    Day
    79°
    40% Chance of Storms
    Forecast day icon
    Night
    67°
    50% Chance of Storms
    Forecast night icon
    Day Details
    Mostly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the lower 80s. Chance of rain 40 percent.
    Night Details
    Partly cloudy with a 55% chance for rain and thunderstorms. Low temperature around 67F. Dew point will be around 60F with an average humidity of 69%. Winds will be 3 mph from the S.
  • Forecast day icon
    Saturday
    40% Chance of Rain
    85°
    Forecast night icon
    Night
    50% Chance of Rain
    70°
    Saturday 5/25
    Day
    85°
    40% Chance of Rain
    Forecast day icon
    Night
    70°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy with a 35% chance for rain and thunderstorms. High temperature around 85F. Dew point will be around 63F with an average humidity of 60%. Winds will be 5 mph from the S.
    Night Details
    Clear with a 50% chance for rain and thunderstorms. Low temperature around 70F. Dew point will be around 64F with an average humidity of 69%. Winds will be 4 mph from the S.
  • Forecast day icon
    Sunday
    50% Chance of Rain
    85°
    Forecast night icon
    Night
    60% Chance of Rain
    71°
    Sunday 5/26
    Day
    85°
    50% Chance of Rain
    Forecast day icon
    Night
    71°
    60% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a 45% chance for rain and thunderstorms. High temperature around 85F. Dew point will be around 65F with an average humidity of 62%. Winds will be 5 mph from the S.
    Night Details
    Mostly clear with a 60% chance for rain and thunderstorms. Low temperature around 71F. Dew point will be around 65F with an average humidity of 69%. Winds will be 2 mph from the SW.
  • Forecast day icon
    Monday
    60% Chance of Rain
    84°
    Forecast night icon
    Night
    50% Chance of Rain
    69°
    Monday 5/27
    Day
    84°
    60% Chance of Rain
    Forecast day icon
    Night
    69°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a 55% chance for rain and thunderstorms. High temperature around 84F. Dew point will be around 65F with an average humidity of 62%. Winds will be 2 mph from the SW.
    Night Details
    Clear with a 50% chance for rain and thunderstorms. Low temperature around 69F. Dew point will be around 64F with an average humidity of 70%. Winds will be 1 mph from the SW.