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Lake Herman, SD Weather Forecast
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Lake Herman Weather Forecast
| REST OF TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
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| Sunny | Partly Cloudy | Chance of T-Storm | Mostly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Showers | Showers | Snow Showers | Mostly Cloudy | Mostly Cloudy |
| Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 50°FHi: 10°C | Lo: 39°FLo: 4°C | Hi: 49°FHi: 9°C | Lo: 35°FLo: 2°C | Hi: 51°FHi: 11°C | Lo: 39°FLo: 4°C |
| POP: 30% | POP: 30% | POP: 50% | POP: 60% | POP: 80% | POP: 60% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 953 AM CDT Thu Oct 22 2026 
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Issued: 634 AM CDT Thu Oct 22 2026
Key Messages
- Patchy fog, especially in river valleys, will lead to visibility below two miles at times through mid morning. Localized dense fog is possible.
- Well above normal temperatures, increasing winds, and drying fuels lead to elevated fire danger Thursday to near critical fire danger Friday. Harvest activity should use extreme caution.
- A significant cooldown arrives this weekend and continues into next week with highs back into the 50s.
- This cooldown brings rain risks Saturday into Monday. ...