Harman US

Mapleton, IL Weather & Growing Conditions

Tonight
53°F
Light Rain then Rain Showers Likely
Rain and a slight chance of thunderstorms before midnight, then rain showers likely. Mostly cloudy. Low around 53, with temperatures rising to around 58 overnight. South wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Tonight 53°F Light Rain then Rain Showers Likely 13 to 16 mph S 87%
Wednesday 60°F Chance Rain Showers then Mostly Cloudy 12 to 15 mph SW 16%
Wednesday Night 45°F Mostly Cloudy 10 mph SW 3%
Thursday 60°F Partly Sunny 8 to 13 mph WSW 10%
Thursday Night 42°F Mostly Cloudy then Chance Light Rain 3 to 7 mph NW 28%
Friday 55°F Partly Sunny then Slight Chance Light Rain 7 to 10 mph N 15%
Friday Night 36°F Mostly Cloudy 0 to 7 mph NNW 3%
Saturday 54°F Mostly Sunny 0 to 5 mph WNW 2%
Saturday Night 34°F Partly Cloudy 1 mph WNW 3%
Sunday 60°F Sunny 1 to 8 mph WNW 12%
Sunday Night 35°F Mostly Clear 1 to 5 mph WNW 4%
Monday 65°F Sunny 1 to 9 mph SW 2%
Monday Night 40°F Mostly Clear 2 to 7 mph WSW 1%
Tuesday 67°F Sunny 2 to 6 mph WNW 0%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Mapleton, IL

Last spring frost
Apr 16
First fall frost
Oct 23
Growing season
189 days
Hardiness zone
6a

Explore more for Mapleton, IL: full frost dates · planting calendar · Illinois frost dates

Climate data from the nearest NOAA station, Peoria Gtr Peoria Ap, Il (7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.