Deerfield, SD Weather Forecast
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Deerfield Weather Forecast
| REST OF TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
| Partly Cloudy | Partly Cloudy | Mostly Cloudy | Rain | Rain | Rain and Snow | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Clearing | Partly Cloudy |
| Hi: 60°FHi: 16°C | Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 39°FLo: 4°C | Hi: 45°FHi: 7°C | Lo: 29°FLo: -2°C | Hi: 45°FHi: 7°C | Lo: 31°FLo: -1°C | Hi: 49°FHi: 9°C | Lo: 29°FLo: -2°C | Hi: 49°FHi: 9°C | Lo: 31°FLo: -1°C |
| POP: 90% | POP: 80% |
POP = Probability of Precipitation.
Weather Outlook Updated: 847 AM MDT Sat Oct 31 2026 

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Issued: 1113 AM MDT Sat Oct 31 2026
Key Messages
- Mild and mostly dry this weekend
- Rain and potentially strong northwest wind gusts Monday into Monday night; some light snow possible over the higher Black Hills.
Discussion
...(This Evening Through Friday) Issued at 123 PM MDT Fri Oct 30 2026
A slow-moving deep upper trough is sitting just offshore the Pac NW. Southwesterly flow is stretching across most of the western CONUS into the northern Plains. WV imagery shows a strong shortwave crossing the Great Basin into WY. Surface obs show ...
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