Weather WorldLonesome Lake, SD Weather Forecast
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Lonesome Lake Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 | | | |  |  | | |  |  | |  |
| Rain | Rain | Chance of Rain | Rain | Partly Sunny | Partly Cloudy | Chance of Rain | Partly Cloudy | Mostly Sunny | Mostly Cloudy | Mostly Cloudy | Chance of Rain |
| Hi: 49°FHi: 9°C | Lo: 35°FLo: 2°C | Hi: 39°FHi: 4°C | Lo: 39°FLo: 4°C | Hi: 50°FHi: 10°C | Lo: 40°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C | Hi: 59°FHi: 15°C Lo: 41°FLo: 5°C | Hi: 59°FHi: 15°C Lo: 41°FLo: 5°C | Hi: 55°FHi: 13°C Lo: 41°FLo: 5°C |
| POP: 80% | POP: 90% | POP: 100% | POP: 100% | POP: 20% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 221 PM CDT Sun Oct 25 2026 
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Issued: 108 PM CDT Sun Oct 25 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.
- 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 20 to 30 percent chance of seeing two inches or more from Eagle Butte to Gettysburg and sout...