Mendota, IL Weather & Growing Conditions
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. South southwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 to 10 mph SSW | 1% |
| Tonight | 67°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 mph SSW | 29% |
| Wednesday | 79°F | Chance Showers And Thunderstorms | 5 mph WSW | 62% |
| Wednesday Night | 64°F | Showers And Thunderstorms | 5 mph NNE | 86% |
| Thursday | 79°F | Chance Showers And Thunderstorms | 5 mph ENE | 59% |
| Thursday Night | 62°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 19% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph SE | 6% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph S | 9% |
| Saturday | 84°F | Mostly Sunny | 5 to 10 mph SSW | 9% |
| Saturday Night | 69°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 16% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SW | 16% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 10 mph SSW | 32% |
| Monday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 32% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 10 mph W | 39% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mendota, IL
Last spring frost
Apr 27
First fall frost
Oct 15
Growing season
171 days
Hardiness zone
5b
Explore more for Mendota, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Paw Paw 2S, Il (10 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.