Mendota, IL Weather & Growing Conditions
Today
60°F
Slight Chance Drizzle then Slight Chance Rain Showers
A slight chance of drizzle before noon, then a slight chance of rain showers and a slight chance of drizzle. Mostly cloudy. High near 60, with temperatures falling to around 54 in the afternoon. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 60°F | Slight Chance Drizzle then Slight Chance Rain Showers | 10 to 15 mph WSW | 8% |
| Tonight | 46°F | Slight Chance Rain Showers then Cloudy | 10 to 15 mph SW | 11% |
| Thursday | 55°F | Cloudy then Chance Rain | 10 to 15 mph W | 40% |
| Thursday Night | 39°F | Chance Rain then Mostly Cloudy | 5 to 10 mph NNW | 25% |
| Friday | 48°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Friday Night | 32°F | Partly Cloudy | 5 mph NNW | 0% |
| Saturday | 51°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 0 to 5 mph WNW | 1% |
| Sunday | 56°F | Sunny | 5 to 10 mph W | 4% |
| Sunday Night | 34°F | Clear | 0 to 5 mph W | 0% |
| Monday | 61°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph WSW | 1% |
| Tuesday | 62°F | Sunny | 5 mph WNW | 1% |
| Tuesday Night | 39°F | Partly Cloudy | 0 mph | 0% |
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 Nov 4, 2026.