Marietta, MN Weather Forecast
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Marietta Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
| Chance of Showers | Chance of Showers | Clearing | Clear | Sunny | Clear | Sunny | Partly Cloudy | Sunny | Mostly Clear | Sunny | Mostly Clear |
| Hi: 59°FHi: 15°C | Lo: 39°FLo: 4°C | Hi: 51°FHi: 11°C | Lo: 31°FLo: -1°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C |
| POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 508 AM CDT Thu Oct 15 2026 

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Issued: 554 AM CDT Thu Oct 15 2026
Key Messages
- Widespread rain today favoring southern Minnesota and western Wisconsin.
- Cooler temperatures continue through Saturday morning when a widespread frost/freeze is expected.
- Temperatures turn back to above normal next week with few chances for additional rain.
Discussion
... Issued at 156 AM CDT Thu Oct 15 2026
Today... Our two upper level waves continue to approach this morning and the combined synoptic support from these waves will be a part of the widespread rain chances today. At the s...
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