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St. Peter Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY |
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| Chance of T-Storm | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Sunny | Partly Cloudy | Partly Cloudy |
| Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Hi: 80°FHi: 27°C Lo: 51°FLo: 11°C | Hi: 80°FHi: 27°C Lo: 51°FLo: 11°C |
| POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 548 AM CDT Mon Sep 21 2026 
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Issued: 619 AM CDT Mon Sep 21 2026
Key Messages
- Scattered showers and thunderstorms will come to an end later this morning.
- Seasonably cool temperatures are expected for the rest of the week.
Aviation
/12Z TAFS THROUGH 18Z TUESDAY/... Issued at 618 AM CDT Mon Sep 21 2026
IFR ceilings are starting off the TAF period at all terminals giving way to MVFR ceilings this afternoon. There is a chance that there could be some isolated showers or drizzle during the TAF period, but confidence of impact on visibility is low. There is also a low ...