Harman US

London Mills, IL Weather & Growing Conditions

Tonight
68°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. East southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Tonight 68°F Showers And Thunderstorms Likely 5 mph ESE 55%
Sunday 75°F Showers And Thunderstorms Likely 3 to 13 mph NNE 65%
Sunday Night 58°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 10 to 14 mph NE 56%
Monday 65°F Showers And Thunderstorms 13 mph ENE 75%
Monday Night 54°F Rain Showers Likely 10 mph NE 64%
Tuesday 64°F Chance Rain Showers 10 mph NE 52%
Tuesday Night 50°F Mostly Cloudy 3 to 9 mph NNE 10%
Wednesday 66°F Partly Sunny 7 mph NNE 2%
Wednesday Night 52°F Partly Cloudy 1 to 6 mph NNE 1%
Thursday 70°F Partly Sunny 3 mph NNE 2%
Thursday Night 55°F Slight Chance Rain Showers 2 mph NNE 15%
Friday 73°F Slight Chance Rain Showers then Partly Sunny 1 to 5 mph NE 15%
Friday Night 55°F Partly Cloudy 2 mph NE 7%
Saturday 75°F Mostly Sunny 3 mph ENE 4%

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

Growing snapshot for London Mills, IL

Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
177 days
Hardiness zone
5b

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

Climate data from the nearest NOAA station, Avon, Il (11.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.