Weather Alert
Hamilton Weather Warning NWS WEATHER ALERT FOR THE HAMILTON, IL AREA - Issued: 233 PM CDT Thu Sep 3 2026 Hamilton Weather Warning

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Hamilton, IL Weather - Hour by Hour Forecast

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Hamilton, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 91°F33°C, dew point 75°F24°C, humidity 59%. Wind direction is SE at 5 mph8 km/h with visibility of 10 mi16 km. Barometric pressure is 29.88 in1011 mb.
Tonight - Clear. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 103 early this evening... Full Forecast
Friday - Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 106... Full Forecast

Hamilton Hourly Weather

24 Hour Forecast Scroll
Thu, Sep 03
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Hamilton, IL Hourly Weather - Clear - 6:00 PM Hamilton, IL Hourly Weather - Clear - 7:00 PM Hamilton, IL Hourly Weather - Clear - 8:00 PM Hamilton, IL Hourly Weather - Clear - 9:00 PM Hamilton, IL Hourly Weather - Clear - 10:00 PM Hamilton, IL Hourly Weather - Clear - 11:00 PM Hamilton, IL Hourly Weather - Mostly Clear - 12:00 AM Hamilton, IL Hourly Weather - Mostly Clear - 1:00 AM Hamilton, IL Hourly Weather - Mostly Clear - 2:00 AM Hamilton, IL Hourly Weather - Clear - 3:00 AM Hamilton, IL Hourly Weather - Clear - 4:00 AM Hamilton, IL Hourly Weather - Clear - 5:00 AM Hamilton, IL Hourly Weather - Clear - 6:00 AM Hamilton, IL Hourly Weather - Clear - 7:00 AM Hamilton, IL Hourly Weather - Clear - 8:00 AM Hamilton, IL Hourly Weather - Mostly Clear - 9:00 AM Hamilton, IL Hourly Weather - Mostly Clear - 10:00 AM Hamilton, IL Hourly Weather - Mostly Clear - 11:00 AM Hamilton, IL Hourly Weather - Mostly Clear - 12:00 PM Hamilton, IL Hourly Weather - Mostly Clear - 1:00 PM Hamilton, IL Hourly Weather - Mostly Clear - 2:00 PM Hamilton, IL Hourly Weather - Clear - 3:00 PM Hamilton, IL Hourly Weather - Clear - 4:00 PM Hamilton, IL Hourly Weather - Clear - 5:00 PM
Clear Clear Clear Clear Clear Clear Mostly Clear Mostly Clear Mostly Clear Clear Clear Clear Clear Clear Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Clear Clear Clear
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Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KFSW model statistics.

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Prob Precip % = Probability of Precipitation.

Hamilton 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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