South Pekin, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Pekin, a village in Tazewell County, Illinois.
Tonight
69°F
Partly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 69. East southeast wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
7-day forecast for South Pekin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 9 mph ESE | 17% |
| Saturday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 8 mph S | 20% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 7 mph E | 52% |
| Sunday | 79°F | Rain Showers Likely | 2 to 13 mph NNE | 67% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 13 mph NE | 66% |
| Monday | 68°F | Showers And Thunderstorms Likely | 13 mph ENE | 66% |
| Monday Night | 54°F | Chance Showers And Thunderstorms | 10 to 14 mph NE | 46% |
| Tuesday | 66°F | Chance Rain Showers then Mostly Cloudy | 13 mph NE | 27% |
| Tuesday Night | 51°F | Mostly Cloudy | 5 to 10 mph NNE | 5% |
| Wednesday | 69°F | Mostly Sunny | 8 mph NNE | 4% |
| Wednesday Night | 53°F | Partly Cloudy | 2 to 7 mph NNE | 2% |
| Thursday | 70°F | Mostly Sunny | 6 mph NNE | 3% |
| Thursday Night | 55°F | Partly Cloudy | 5 mph NNE | 3% |
| Friday | 73°F | Mostly Sunny | 2 to 7 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for South Pekin (40.495, -89.652). Updated through the day.
Growing snapshot for South Pekin
Last spring frost
Apr 16
First fall frost
Oct 23
Growing season
189 days
Hardiness zone
6a
More local growing data for South Pekin: nearby ZIP 61564 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Armington
Creve Coeur
Deer Creek
Delavan
East Peoria
Green Valley
Heritage Lake
Hopedale
Mackinaw
Manito
Marquette Heights
Minier
Morton
North Pekin
Pekin
Tremont
Washington
Climate data from the nearest NOAA station, Peoria Gtr Peoria Ap, Il (11.8 mi from South Pekin). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.