De Soto, IL Weather & Growing Conditions
Today
88°F
Sunny
Sunny. High near 88, with temperatures falling to around 86 in the afternoon. East wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Sunny | 3 mph E | 0% |
| Tonight | 65°F | Mostly Clear then Patchy Fog | 3 mph SE | 0% |
| Wednesday | 91°F | Patchy Fog then Sunny | 1 to 5 mph S | 1% |
| Wednesday Night | 70°F | Partly Cloudy | 1 to 6 mph SSE | 14% |
| Thursday | 87°F | Chance Showers And Thunderstorms | 1 to 5 mph SSW | 50% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms | 3 mph S | 54% |
| Friday | 87°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 6 mph SW | 60% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 1 to 5 mph SSW | 50% |
| Saturday | 90°F | Chance Showers And Thunderstorms | 5 mph SW | 39% |
| Saturday Night | 71°F | Mostly Clear | 3 mph SSW | 14% |
| Sunday | 92°F | Sunny | 2 to 9 mph SSW | 10% |
| Sunday Night | 74°F | Mostly Clear | 8 mph SSW | 8% |
| Monday | 95°F | Sunny | 7 to 13 mph SSW | 8% |
| Monday Night | 75°F | Mostly Clear | 10 mph SSW | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for De Soto, IL
Last spring frost
Apr 9
First fall frost
Oct 22
Growing season
195 days
Hardiness zone
7a
Explore more for De Soto, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Carbondale Southern Il Ap, Il (3.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.