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Letcher Lake, SD Weather Forecast
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Letcher Lake Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | |  |  |  | | | | | | |
| Partly Sunny | Chance of T-Storm | Partly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Chance of T-Storm |
| Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 60°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C |
| POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1139 AM CDT Sun Aug 23 2026 
Letcher Lake Radar Loop
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Letcher Lake Weather Map
Letcher Lake Quick Facts
Letcher Lake Forecast Discussion
Issued: 1219 PM CDT Sun Aug 23 2026
Key Messages
- The next better chance for showers and storms across a wider part of the area is tonight (50-70%). Locally heavy rain and isolated severe storms are possible.
- Otherwise most days through next week will see highs in the 80s and lows in the upper 50s to lower 60s.
Discussion
... Issued at 142 PM CDT Sat Aug 22 2026
A quiet night is ahead as high pressure drifts east. Southerly flow will develop in central SD later tonight and become more established across the area through Sunday. The lig...