Weather Alert
Hamilton Weather Warning NWS WEATHER ALERT FOR THE HAMILTON, IL AREA - Issued: 302 AM CDT Sat Sep 5 2026 Hamilton Weather Warning

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Hamilton, IL Weather Forecast

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Hamilton, IL Weather Forecast

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Hamilton IL weather - Clear - 77°F
Clear
77°F
Updated 3:40 am
Feels Like 82°F
Humidity 88%
Wind S 5 mph
Barometer  29.93 in
Dew Point 73°F
Hamilton IL weather - Clear - 25°C
Clear
25°C
Updated 3:40 am
Feels Like 28°C
Humidity 88%
Wind S 8 km/h
Barometer  101.4 kPa
Dew Point 23°C
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Hamilton Weather Forecast

REST OF TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY
Hamilton, IL Weather - Rest Of Tonight Mostly Clear Hamilton, IL Weather - Saturday Sunny Hamilton, IL Weather - Saturday Night Partly Cloudy Hamilton, IL Weather - Sunday Mostly Sunny Hamilton, IL Weather - Sunday Night Partly Cloudy Hamilton, IL Weather - Labor Day Sunny Hamilton, IL Weather - Monday Night Partly Cloudy Hamilton, IL Weather - Tuesday Partly Cloudy Hamilton, IL Weather - Tuesday Night Partly Cloudy Hamilton, IL Weather - Wednesday Mostly Sunny Hamilton, IL Weather - Wednesday Night Chance Of Showers Hamilton, IL Weather - Thursday Mostly Sunny
Mostly Clear Sunny Partly Cloudy Mostly Sunny Partly Cloudy Sunny Partly Cloudy Partly Cloudy Partly Cloudy Mostly Sunny Chance of Showers Mostly Sunny
Lo: 75°FLo: 24°C Hi: 95°FHi: 35°C
 Lo: 69°FLo: 21°C Hi: 89°FHi: 32°C
 Lo: 65°FLo: 18°C Hi: 89°FHi: 32°C
 Hi: 95°FHi: 35°C
Lo: 65°FLo: 18°C		 Hi: 95°FHi: 35°C
Lo: 65°FLo: 18°C		 Lo: 75°FLo: 24°C Hi: 91°FHi: 33°C
 Lo: 65°FLo: 18°C Hi: 85°FHi: 29°C
POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 126 AM CDT Sat Sep 05 2026 Hamilton, IL Weather - WeatherWorld.com

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Issued: 206 AM CDT Sat Sep 5 2026

Key Messages

  • Dangerous heat continues through 7 PM this evening, with peak heat indices of 100 to 110 degrees. Extreme heat warnings and heat advisories are in effect.
  • After a brief reprieve, heat and humidity will return on Tuesday and Wednesday. The overall pattern has a 55-70% probability of above normal temperatures through mid- September.

Aviation

/06Z TAFS THROUGH 06Z SUNDAY/... Issued at 1242 AM CDT Sat Sep 5 2026

VFR conditions will prevail at all terminals but DBQ, where fog will result in ...