Mendota, IL Weather & Growing Conditions
Today
80°F
Showers And Thunderstorms
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Cloudy, with a high near 80. Southeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Showers And Thunderstorms | 5 mph SE | 97% |
| Tonight | 64°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 mph SW | 95% |
| Sunday | 71°F | Showers And Thunderstorms Likely | 10 to 15 mph NNE | 66% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 15 mph NE | 44% |
| Monday | 65°F | Chance Rain Showers | 15 mph ENE | 54% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 15 mph NE | 28% |
| Tuesday | 63°F | Slight Chance Rain Showers | 15 mph NE | 18% |
| Tuesday Night | 50°F | Partly Cloudy | 10 to 15 mph NE | 12% |
| Wednesday | 66°F | Mostly Sunny | 10 to 15 mph NNE | 4% |
| Wednesday Night | 52°F | Partly Cloudy | 5 to 10 mph NNE | 1% |
| Thursday | 68°F | Mostly Sunny | 5 to 10 mph NNE | 4% |
| Thursday Night | 52°F | Partly Cloudy | 5 mph NE | 3% |
| Friday | 72°F | Mostly Sunny | 5 mph NE | 2% |
| Friday Night | 52°F | Partly Cloudy | 5 mph NE | 2% |
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 Sep 19, 2026.