Lake Marsh, SD Weather Forecast
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Lake Marsh Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT |
| Partly Cloudy | Partly Sunny | Mostly Clear | Mostly Sunny | Clear | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Clear |
| Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°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: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 922 PM CDT Fri Oct 02 2026 

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Issued: 811 PM CDT Fri Oct 2 2026
Key Messages
- Temperatures are expected to be near to slightly above normal this weekend into most of next week.
- There is a 20-50 percent chance for showers on Saturday, otherwise the rest of the weekend through most of next week will be dry.
Discussion
... Issued at 239 PM CDT Fri Oct 2 2026
A northwest flow aloft pattern will persist across the Northern Plains this weekend into most of next week. A series of weak upper level waves will pass through this flow leading to a rollercoaster temperature p...
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