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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.