Isabelle Lake, SD Weather Forecast
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Isabelle Lake Weather Forecast
| REST OF TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY |
| Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Sunny | Mostly Clear | Windy | Windy | Chance of Showers | Chance of Showers | Showers Likely | Mostly Cloudy | Mostly Cloudy |
| Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C Lo: 41°FLo: 5°C | Hi: 51°FHi: 11°C | Hi: 55°FHi: 13°C Lo: 35°FLo: 2°C | Hi: 55°FHi: 13°C Lo: 35°FLo: 2°C |
| POP: 20% | POP: 20% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1217 AM CDT Thu Oct 08 2026 

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Issued: 1250 AM CDT Thu Oct 8 2026
Key Messages
- Mild with temperatures about 5 degrees above normal today with light south southeast winds.
- Heat and humidity return for Friday, with highs in the mid 70s to mid 80s (15 to 25 degrees above normal). South winds increase to 20 to 30 mph.
- Peak heat Saturday, with highs in the 80s, about 20 to 25 degrees above normal. Lower humidity and southwest winds topping 25 to 40 mph (highest across the Sisseton hills) resulting in high fire danger across the east.
- Pattern change to cooler tempera...
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