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South Des Moines, IA Weather Forecast
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South Des Moines Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
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| Chance of T-Storm | Chance of T-Storm | Chance of Showers | Clearing | Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Mostly Sunny | Chance of Showers |
| Hi: 85°FHi: 29°C | Lo: 70°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 60°FLo: 16°C |
| POP: 40% | POP: 50% | POP: 20% | POP: 20% | POP: 40% | POP: 80% | POP: 20% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 637 AM CDT Sat Aug 15 2026 
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Issued: 623 AM CDT Sat Aug 15 2026
Key Messages
- Storms diminishing over southern Iowa early this morning. Locally heavy rainfall still possible. Additional storms may occur late this afternoon and evening.
- Mostly dry Sunday!
- Another round of strong storms possible Tuesday.
Aviation
/12Z TAFS THROUGH 12Z SUNDAY/... Issued at 619 AM CDT Sat Aug 15 2026
Scattered showers and thunderstorms are lingering over southern Iowa early in the period but will continue to diminish. A broad area of LIFR/IFR stratus is ...