Thebes, IL Weather & Growing Conditions
Today
87°F
Patchy Fog then Sunny
Patchy fog before 8am. Sunny. High near 87, with temperatures falling to around 85 in the afternoon. East wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Patchy Fog then Sunny | 2 mph E | 0% |
| Tonight | 67°F | Mostly Clear | 2 mph E | 0% |
| Wednesday | 89°F | Sunny | 2 mph SSE | 0% |
| Wednesday Night | 70°F | Mostly Clear | 2 mph SSE | 1% |
| Thursday | 89°F | Slight Chance Showers And Thunderstorms | 2 to 6 mph SSW | 20% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms | 2 to 6 mph S | 51% |
| Friday | 89°F | Chance Showers And Thunderstorms | 5 mph SSW | 51% |
| Friday Night | 72°F | Chance Showers And Thunderstorms | 3 mph SSW | 42% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 3 mph SSW | 35% |
| Saturday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph S | 20% |
| Sunday | 90°F | Mostly Sunny | 2 to 7 mph SSW | 10% |
| Sunday Night | 73°F | Mostly Clear | 6 mph SSW | 7% |
| Monday | 92°F | Sunny | 3 to 7 mph SSW | 6% |
| Monday Night | 74°F | Mostly Clear | 6 mph SSW | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Thebes, IL
Last spring frost
Apr 5
First fall frost
Oct 25
Growing season
201 days
Hardiness zone
7a
Explore more for Thebes, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Cape Girardeau Muni Ap, Mo (9.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.