Pekin, IL Weather & Growing Conditions
Tonight
69°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 69. Southeast wind around 9 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 | 9 mph SE | 18% |
| Saturday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 8 mph SSE | 21% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 8 mph E | 54% |
| Sunday | 78°F | Rain Showers Likely | 3 to 13 mph NNE | 67% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 14 mph NE | 67% |
| Monday | 67°F | Showers And Thunderstorms Likely | 13 mph ENE | 67% |
| Monday Night | 55°F | Chance Showers And Thunderstorms | 10 to 14 mph NE | 45% |
| Tuesday | 66°F | Chance Rain Showers then Mostly Cloudy | 13 mph NE | 27% |
| Tuesday Night | 52°F | Mostly Cloudy | 6 to 10 mph NNE | 5% |
| Wednesday | 69°F | Mostly Sunny | 8 mph NNE | 4% |
| Wednesday Night | 54°F | Partly Cloudy | 3 to 7 mph NNE | 2% |
| Thursday | 70°F | Mostly Sunny | 6 mph NNE | 3% |
| Thursday Night | 55°F | Partly Cloudy | 5 mph NNE | 2% |
| Friday | 73°F | Mostly Sunny | 3 to 7 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Pekin, IL
Last spring frost
Apr 16
First fall frost
Oct 23
Growing season
189 days
Hardiness zone
6a
Explore more for Pekin, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Peoria Gtr Peoria Ap, Il (9.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.