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Fall River County, SD Official WebsiteFall River County, SD Weather Forecast
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Fall River County Weather Forecast
| OVERNIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
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| Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Clear | Mostly Sunny | Clear | Sunny | Clear | Sunny | Mostly Clear | Clearing |
| Lo: 35°FLo: 2°C | Hi: 55°FHi: 13°C | Lo: 31°FLo: -1°C | Hi: 55°FHi: 13°C | Lo: 31°FLo: -1°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C | Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1253 AM MST Thu Nov 05 2026 
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Issued: 1017 PM MST Wed Nov 4 2026
Key Messages
- Patchy fog possible Tuesday morning across northwestern South Dakota.
- Warming trend and dry through the weekend into next week.
Discussion
...(This Evening Through Wednesday) Issued at 1229 PM MST Wed Nov 4 2026
Closed upper low evident in water vapor imagery is centered over southern MN/northern IA. Further upstream, another closed low is pushing into the Four Corners region. A surface low is centered across northern WI/west-central MN with a secondary trough axis stretching back into ...