Missouri weather in September
The state broadly agrees with itself in September: afternoons run 81° in Branson and 81° in St. Louis, with everywhere else in between.
Based on 2 weather stations. Two stations — the St. Louis river valley and the Ozark hills, close enough on a map and far enough apart on a January morning.
St. Louis & the East
Highs near 81°, nights around 61°, and 3.0 in of rain in a typical September.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| St. Louis | 81° / 61° | 5 | The air thins out and the city exhales. |
The Ozarks
Highs near 81°, nights around 59°, and 4.1 in of rain in a typical September.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Branson | 81° / 59° | 5 | The hollows cool off first; afternoons still feel like summer. |
Each place above has its own page for the full story — what the month feels like, what to pack, and whether the timing is right.