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Lyons, IL Weather & Growing Conditions

This Afternoon
74°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Cloudy, with a high near 74. Southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 74°F Chance Showers And Thunderstorms 5 mph SE 49%
Tonight 65°F Showers And Thunderstorms Likely then Showers And Thunderstorms 5 to 10 mph ENE 95%
Sunday 70°F Showers And Thunderstorms Likely 10 to 15 mph NNE 64%
Sunday Night 58°F Chance Rain Showers 15 mph NE 31%
Monday 65°F Chance Rain Showers 15 mph ENE 27%
Monday Night 55°F Slight Chance Rain Showers then Mostly Cloudy 10 to 15 mph ENE 20%
Tuesday 63°F Slight Chance Rain Showers 15 mph NE 17%
Tuesday Night 55°F Mostly Cloudy 10 to 15 mph NE 11%
Wednesday 64°F Slight Chance Rain Showers 10 to 15 mph NE 15%
Wednesday Night 55°F Mostly Cloudy 5 to 10 mph NE 6%
Thursday 67°F Partly Sunny 5 to 10 mph NNE 3%
Thursday Night 56°F Mostly Cloudy 5 to 10 mph NNE 3%
Friday 70°F Partly Sunny 5 to 10 mph NE 3%
Friday Night 56°F Partly Cloudy 5 to 10 mph NE 4%

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

Growing snapshot for Lyons, IL

Last spring frost
Apr 11
First fall frost
Oct 31
Growing season
201 days
Hardiness zone
6a

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

Climate data from the nearest NOAA station, Chicago Midway Ap, Il (3.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.