Avon, IL Weather & Growing Conditions
Tonight
69°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 4am and 5am, then patchy fog and a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 69. East southeast wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 69°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 7 mph ESE | 23% |
| Saturday | 87°F | Patchy Fog then Mostly Cloudy | 5 to 8 mph S | 23% |
| Saturday Night | 67°F | Mostly Cloudy then Chance Showers And Thunderstorms | 3 to 7 mph NNE | 67% |
| Sunday | 76°F | Rain Showers Likely | 2 to 10 mph NNE | 67% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 8 to 12 mph NE | 69% |
| Monday | 66°F | Showers And Thunderstorms Likely | 13 mph ENE | 69% |
| Monday Night | 53°F | Chance Rain Showers | 7 to 12 mph NE | 48% |
| Tuesday | 64°F | Chance Rain Showers | 10 mph NE | 29% |
| Tuesday Night | 49°F | Mostly Cloudy | 3 to 8 mph NNE | 5% |
| Wednesday | 67°F | Partly Sunny | 7 mph NNE | 2% |
| Wednesday Night | 52°F | Partly Cloudy | 1 to 5 mph NNE | 1% |
| Thursday | 69°F | Partly Sunny | 1 to 5 mph NNE | 4% |
| Thursday Night | 54°F | Partly Cloudy | 3 mph NE | 5% |
| Friday | 72°F | Mostly Sunny | 1 to 5 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Avon, IL
Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
177 days
Hardiness zone
5b
Explore more for Avon, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Avon, Il (1.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.