Pekin, IL Weather & Growing Conditions
Today
87°F
Mostly Sunny
Mostly sunny, with a high near 87. South southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Mostly Sunny | 6 mph SSW | 0% |
| Tonight | 67°F | Partly Cloudy | 5 mph SSE | 12% |
| Wednesday | 85°F | Chance Showers And Thunderstorms | 2 to 6 mph S | 35% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph S | 89% |
| Thursday | 81°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph S | 79% |
| Thursday Night | 65°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SE | 15% |
| Friday | 84°F | Mostly Sunny | 1 mph S | 9% |
| Friday Night | 66°F | Slight Chance Showers And Thunderstorms | 1 mph SSW | 20% |
| Saturday | 86°F | Mostly Sunny | 2 to 6 mph SSW | 12% |
| Saturday Night | 70°F | Mostly Clear | 6 mph S | 9% |
| Sunday | 89°F | Sunny | 6 to 10 mph SSW | 7% |
| Sunday Night | 72°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 6 to 9 mph S | 19% |
| Monday | 89°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 6 to 9 mph SSW | 19% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 27% |
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 Aug 4, 2026.