Harman US

Maquon, IL Weather & Growing Conditions

This Afternoon
83°F
Mostly Cloudy
Mostly cloudy, with a high near 83. South wind around 8 mph, with gusts as high as 16 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 83°F Mostly Cloudy 8 mph S 8%
Tonight 67°F Chance Showers And Thunderstorms 3 to 7 mph SE 57%
Sunday 75°F Showers And Thunderstorms Likely 3 to 13 mph NNE 64%
Sunday Night 58°F Chance Showers And Thunderstorms 10 to 14 mph NE 54%
Monday 65°F Rain Showers Likely 13 mph ENE 74%
Monday Night 54°F Rain Showers Likely 8 to 12 mph NE 65%
Tuesday 64°F Chance Rain Showers 10 mph NE 51%
Tuesday Night 50°F Mostly Cloudy 3 to 10 mph NNE 11%
Wednesday 66°F Partly Sunny 5 to 8 mph NNE 2%
Wednesday Night 52°F Partly Cloudy 1 to 6 mph NNE 1%
Thursday 70°F Partly Sunny 1 to 5 mph NNE 2%
Thursday Night 55°F Slight Chance Rain Showers 0 to 3 mph NNE 15%
Friday 74°F Slight Chance Rain Showers then Partly Sunny 1 to 5 mph NE 15%
Friday Night 55°F Partly Cloudy 0 to 3 mph NE 7%

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

Growing snapshot for Maquon, IL

Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
5b

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

Climate data from the nearest NOAA station, Knoxville, Il (10 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.