Thebes, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thebes, a village in Scott County, Illinois.
This Afternoon
77°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 3pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 77, with temperatures falling to around 73 in the afternoon. South wind around 17 mph, with gusts as high as 29 mph. Chance of precipitation is 50%.
7-day forecast for Thebes
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Slight Chance Showers And Thunderstorms | 17 mph S | 47% |
| Tonight | 56°F | Showers And Thunderstorms | 6 to 14 mph S | 100% |
| Wednesday | 68°F | Mostly Sunny | 5 to 8 mph WSW | 5% |
| Wednesday Night | 44°F | Mostly Clear | 3 mph WSW | 0% |
| Thursday | 68°F | Sunny | 1 to 6 mph SW | 0% |
| Thursday Night | 46°F | Partly Cloudy | 3 mph WNW | 5% |
| Friday | 62°F | Partly Sunny | 3 to 8 mph NNW | 1% |
| Friday Night | 41°F | Partly Cloudy | 2 to 6 mph N | 1% |
| Saturday | 58°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 37°F | Partly Cloudy | 1 mph NNW | 1% |
| Sunday | 62°F | Sunny | 0 to 5 mph WNW | 6% |
| Sunday Night | 36°F | Mostly Clear | 2 mph NW | 5% |
| Monday | 64°F | Sunny | 1 to 6 mph W | 1% |
| Monday Night | 39°F | Mostly Clear | 3 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Thebes (37.212, -89.451). Updated through the day.
Growing snapshot for Thebes
Last spring frost
Apr 5
First fall frost
Oct 25
Growing season
201 days
Hardiness zone
7a
More local growing data for Thebes: nearby ZIP 63742 weather · frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Cape Girardeau Muni Ap, Mo (8.2 mi from Thebes). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.