Weather WorldPost Lake, SD Weather Forecast
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Post Lake Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 | |  |  |  |  | |  | | |  |  |
| Chance of Rain | Rain | Snow | Patchy Fog | Partly Cloudy | Partly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Chance of Rain | Chance of Rain |
| Lo: 39°FLo: 4°C | Hi: 40°FHi: 4°C | Lo: 31°FLo: -1°C | Hi: 55°FHi: 13°C | Lo: 35°FLo: 2°C | Hi: 59°FHi: 15°C | Lo: 31°FLo: -1°C | Hi: 59°FHi: 15°C Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 41°FLo: 5°C | Hi: 59°FHi: 15°C |
| POP: 20% | POP: 100% | POP: 100% | POP: 30% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 221 AM CDT Mon Oct 26 2026 
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Issued: 1225 AM CDT Mon Oct 26 2026
Key Messages
- Rain chances will become more widespread today through early Tuesday. Probabilities of seeing one inch or more range from 20-50 percent across north central SD to 50-90 percent from south central SD into northeast SD and west central MN.
- Rain and low clouds will bring visibility down to around 2 miles or less Monday afternoon.
- Snow will mix in with the rain on Monday and Monday night across central SD. Minor accumulations, especially on grassy surfaces, will be possible. There is a 2...