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Latham Lake, SD Weather Forecast
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Latham Lake Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
 |  | |  |  |  |  |  |  | |  | |
| Partly Sunny | Partly Cloudy | Partly Sunny | Chance of Showers | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of Showers |
| Hi: 85°FHi: 29°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 60°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C |
| POP: 50% | POP: 50% | POP: 90% | POP: 70% | POP: 30% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 521 AM CDT Fri Sep 11 2026 
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Issued: 211 AM CDT Fri Sep 11 2026
Key Messages
- Above normal high temperatures in the 80s today. A sharp cooldown is expected Saturday through early next week with highs in the 60s to low 70s. These temperatures are about 5 to 10 degrees below normal.
- A Red Flag Warning is in effect for parts of south central South Dakota. A combination of dry fuels, wind gusts up to 40 miles per hour, and afternoon humidity around 20 percent will create critical fire weather conditions. Grassland Fire Danger will reach High for all counties west ...