Andover, IL Weather Forecast

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Andover, IL Weather Forecast

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Andover IL weather  - Clear - 91°F
Clear
91°F
Updated 6:50 pm
Feels Like 100°F
Humidity 61%
Wind S 7 mph
Barometer  29.86 in
Dew Point 76°F
Andover IL weather  - Clear - 33°C
Clear
33°C
Updated 6:50 pm
Feels Like 38°C
Humidity 61%
Wind S 11 km/h
Barometer  101.1 kPa
Dew Point 24°C

Andover Weather Forecast

TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY
Andover, IL Weather - Tonight Mostly Clear Andover, IL Weather - Friday Sunny Andover, IL Weather - Friday Night Chance Of Showers Andover, IL Weather - Saturday Sunny Andover, IL Weather - Saturday Night Mostly Clear Andover, IL Weather - Sunday Mostly Sunny Andover, IL Weather - Sunday Night Partly Cloudy Andover, IL Weather - Labor Day Partly Cloudy Andover, IL Weather - Monday Night Partly Cloudy Andover, IL Weather - Tuesday Mostly Sunny Andover, IL Weather - Tuesday Night Chance Of Showers Andover, IL Weather - Wednesday Mostly Sunny
Mostly Clear Sunny Chance of Showers Sunny Mostly Clear Mostly 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: 71°FLo: 22°C Hi: 91°FHi: 33°C
Lo: 69°FLo: 21°C Hi: 85°FHi: 29°C
Lo: 61°FLo: 16°C Hi: 85°FHi: 29°C
Lo: 65°FLo: 18°C
Hi: 85°FHi: 29°C
Lo: 65°FLo: 18°C
Hi: 91°FHi: 33°C
Lo: 71°FLo: 22°C Hi: 91°FHi: 33°C
POP: 30% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 541 PM CDT Thu Sep 03 2026 Andover, IL Weather - WeatherWorld.com

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Issued: 217 PM CDT Thu Sep 3 2026

Key Messages

  • Very hot and humid weather will continue through the end of the week and into the weekend, with peak heat index values between 100-110, especially for areas along and south of Highway 30.
  • Precipitation chances will remain limited for many, with best chances north of Interstate 80 through the end of the work week.
  • Temperatures and humidity will trend upwards again through the middle of next week, resulting in heat indices nearing 100. A more active pattern may also take shape, leading...