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Weldon Spring, MO Weather Forecast
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Weldon Spring Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  | | | | | |  | |  |  |
| Chance of T-Storm | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers |
| Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 65°FLo: 18°C | Hi: 90°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 99°FHi: 37°C Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C Lo: 71°FLo: 22°C | Lo: 71°FLo: 22°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C |
| POP: 20% | POP: 50% | POP: 50% | POP: 20% | POP: 20% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 553 PM CDT Sat Sep 05 2026 
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Issued: 252 PM CDT Sat Sep 5 2026
Key Messages
- Cooler (and less humid) air will move into the region for the rest of the holiday weekend before a (brief) return to heat midweek.
Aviation
/18Z TAFS THROUGH 00Z MONDAY/... Issued at 1210 PM CDT Sat Sep 5 2026
Isolated showers, and perhaps a few rumbles of thunder, are possible this afternoon, mainly in southeast Missouri. A weak backdoor cold front will move through from northwest to southeast tonight/early Sunday morning, with northwest winds veering to the northeast behind the bounda...