Avon, IL Weather & Growing Conditions
Tonight
51°F
Light Rain Likely then Slight Chance Rain Showers
Rain likely and a slight chance of thunderstorms before midnight, then a slight chance of rain showers between midnight and 3am. Mostly cloudy. Low around 51, with temperatures rising to around 56 overnight. South southwest wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Light Rain Likely then Slight Chance Rain Showers | 10 to 14 mph SSW | 71% |
| Wednesday | 57°F | Chance Rain Showers then Mostly Cloudy | 13 to 16 mph SW | 17% |
| Wednesday Night | 44°F | Mostly Cloudy | 10 mph WSW | 5% |
| Thursday | 57°F | Mostly Cloudy then Slight Chance Light Rain | 7 to 13 mph W | 16% |
| Thursday Night | 41°F | Chance Light Rain | 3 to 7 mph NW | 31% |
| Friday | 54°F | Mostly Cloudy | 6 to 9 mph N | 14% |
| Friday Night | 34°F | Mostly Cloudy | 0 to 5 mph N | 1% |
| Saturday | 53°F | Mostly Sunny | 0 to 3 mph WNW | 2% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph WNW | 1% |
| Sunday | 60°F | Sunny | 2 to 8 mph WNW | 11% |
| Sunday Night | 35°F | Mostly Clear | 5 mph W | 3% |
| Monday | 64°F | Sunny | 2 to 9 mph SW | 2% |
| Monday Night | 39°F | Mostly Clear | 2 to 6 mph W | 0% |
| Tuesday | 66°F | Sunny | 5 mph NW | 0% |
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 Nov 4, 2026.