Weather WorldPost Lake, SD 7-Day Weather Forecast
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Post Lake Weather Forecast
Post Lake, SD Weather Forecast Date: 1206 PM CDT Sat Aug 22 2026
Weather forecast for Post Lake, SD
Today Hi: 81°FHi: 27°C Lo: 60°F Lo: 16°C |
This Afternoon... Mostly sunny. Highs in the lower 80s. Northeast winds 5 to 10 mph. |
Sun Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Sunday... Partly sunny with a 20% chance of thunderstorms. Highs in the lower 80s. Southeast winds 15 to 20 mph with gusts up to 30 mph. |
Mon Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Monday... Partly sunny. Humid with highs in the mid 80s. East winds 5 to 10 mph, becoming northeast in the afternoon. |
| Tue Hi: 85°FHi: 29°C Lo: 59°F Lo: 15°C |
Tuesday... Partly sunny. Highs in the mid 80s. |
| Wed Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C |
Wednesday... Mostly clear. Lows in the upper 50s. Highs in the lower 80s. |
| Wed Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C |
Wednesday... Mostly clear. Lows in the upper 50s. Highs in the lower 80s. |
| Thu Hi: 85°FHi: 29°C Lo: 60°F Lo: 16°C |
Thursday... Partly sunny. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20%. |
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