Weather World
City of Charleston, MOCharleston, MO Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Charleston Weather Forecast
| THIS AFTERNOON | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | FRIDAY |
 |  | |  | |  | | | | | |
| Sunny | Patchy Fog | Patchy Fog | Partly Cloudy | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Sunny |
| Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Hi: 90°FHi: 32°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 PM CDT Sat Sep 12 2026 
Charleston Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Charleston Weather Map
Charleston Quick Facts
Charleston Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1206 PM CDT Sat Sep 12 2026
Key Messages
- A blast of mid September heat is forecast Tuesday-Thursday. Mid 90s high temperatures combined with high humidity will cause heat indices to rise toward/into the triple digits each afternoon.
- The heat should break by week`s end, when slightly cooler temperatures and a small 15 to 25% chance of thunderstorms returns to the forecast.
Discussion
... Issued at 1205 PM CDT Sat Sep 12 2026
A front will be kinda/sorta near us to our north, but offer little real impact here as high pressure reo...