Smithville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Smithville, a community in Peoria County, Illinois.
Overnight
63°F
Mostly Clear
Mostly clear, with a low around 63. South wind around 3 mph.
7-day forecast for Smithville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Mostly Clear | 3 mph S | 0% |
| Tuesday | 87°F | Sunny | 3 to 7 mph S | 0% |
| Tuesday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSE | 16% |
| Wednesday | 84°F | Chance Showers And Thunderstorms | 6 mph SSW | 44% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 6 mph NW | 87% |
| Thursday | 81°F | Showers And Thunderstorms | 5 mph S | 79% |
| Thursday Night | 65°F | Partly Cloudy | 0 to 5 mph SE | 13% |
| Friday | 84°F | Mostly Sunny | 2 mph S | 11% |
| Friday Night | 66°F | Slight Chance Showers And Thunderstorms | 1 mph SE | 15% |
| Saturday | 87°F | Mostly Sunny | 2 to 6 mph SSW | 12% |
| Saturday Night | 71°F | Mostly Clear | 7 mph S | 9% |
| Sunday | 89°F | Sunny | 7 to 12 mph SSW | 6% |
| Sunday Night | 72°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 6 to 10 mph SSW | 23% |
| Monday | 89°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 6 to 10 mph SSW | 23% |
Forecast source: National Weather Service (api.weather.gov) for Smithville (40.659, -89.803). Updated through the day.
Growing snapshot for Smithville
Last spring frost
Apr 16
First fall frost
Oct 23
Growing season
189 days
Hardiness zone
6a
More local growing data for Smithville: nearby ZIP 61536 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Peoria Gtr Peoria Ap, Il (5.8 mi from Smithville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.