Mason, SD Weather Forecast
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Mason Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
| Rain | Chance of Rain | Clearing | Mostly Clear | Partly Cloudy | Partly Cloudy | Clearing | Partly Cloudy | Clearing | Chance of Rain | Clearing | Mostly Clear |
| Hi: 50°FHi: 10°C | Lo: 35°FLo: 2°C | Hi: 50°FHi: 10°C | Lo: 30°FLo: -1°C | Hi: 55°FHi: 13°C | Lo: 30°FLo: -1°C | Hi: 55°FHi: 13°C | Lo: 31°FLo: -1°C | Hi: 55°FHi: 13°C | Lo: 35°FLo: 2°C | Hi: 51°FHi: 11°C | Lo: 31°FLo: -1°C |
| POP: 90% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 622 AM MST Mon Nov 02 2026 

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Issued: 447 AM MST Mon Nov 2 2026
Key Messages
- Widespread rain tonight through early Tuesday, with the heaviest totals over central South Dakota and northern Black Hills.
- Strong northwest winds Monday and Monday night. Gusts of 40-60 mph expected.
- Rain changing to snow over the higher northern Black Hills Monday evening, with a few inches of snow accumulation.
- Drier weather returns later Tuesday and remains for the rest of the work week.
Discussion
...(This Evening Through Sunday) Issued at 234 PM MST Sun Nov 1 2026
Satellite/WV ima...
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