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Benton, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Benton, a city in Franklin County, Illinois.

This Afternoon
79°F
Partly Sunny
Partly sunny. High near 79, with temperatures falling to around 74 in the afternoon. South wind around 21 mph, with gusts as high as 30 mph.

7-day forecast for Benton

WhenTempForecastWindPrecip
This Afternoon 79°F Partly Sunny 21 mph S 11%
Tonight 56°F Showers And Thunderstorms 8 to 17 mph S 99%
Wednesday 68°F Partly Sunny 7 to 12 mph WSW 14%
Wednesday Night 44°F Partly Cloudy 3 mph WSW 0%
Thursday 69°F Sunny 3 to 10 mph WSW 0%
Thursday Night 45°F Mostly Cloudy 3 mph WNW 6%
Friday 61°F Partly Sunny 3 to 12 mph NNW 2%
Friday Night 39°F Partly Cloudy 2 to 7 mph NNW 1%
Saturday 58°F Mostly Sunny 2 to 6 mph NNW 0%
Saturday Night 35°F Partly Cloudy 2 mph NW 1%
Sunday 63°F Sunny 1 to 8 mph W 6%
Sunday Night 34°F Mostly Clear 3 mph WNW 5%
Monday 66°F Sunny 1 to 9 mph W 2%
Monday Night 39°F Mostly Clear 5 mph SW 0%

Forecast source: National Weather Service (api.weather.gov) for Benton (38.013, -88.917). Updated through the day.

Growing snapshot for Benton

Last spring frost
Apr 4
First fall frost
Oct 28
Growing season
206 days
Hardiness zone
7a

More local growing data for Benton: nearby ZIP 62812 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Benton 2 N, Il (1.9 mi from Benton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.