Lacy, SD 7-Day Weather Forecast
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Lacy Weather Forecast


Lacy, SD Weather Forecast Date: 821 PM CDT Mon Sep 07 2026
Weather forecast for Lacy, SD
| Tonight Lo: 65°F Lo: 18°C |
Tonight... Partly cloudy this evening, then becoming mostly cloudy. Breezy with lows in the mid 60s. South winds 15 to 25 mph with gusts up to 35 mph, becoming northwest 10 to 15 mph with gusts up to 25 mph after midnight. |
| Tue Hi: 85°FHi: 29°C Lo: 55°F Lo: 13°C |
Tuesday... Partly sunny. Less humid with highs in the mid 80s. Northwest winds 10 to 15 mph with gusts up to 25 mph. |
| Wed Hi: 80°FHi: 27°C Lo: 55°F Lo: 13°C |
Wednesday... Sunny. Highs around 80. Northwest winds 15 to 20 mph with gusts up to 30 mph. |
| Thu Hi: 90°FHi: 32°C Lo: 60°F Lo: 16°C |
Thursday... Sunny, warmer with highs around 90. |
| Fri Hi: 85°FHi: 29°C Lo: 55°F Lo: 13°C |
Friday... Mostly clear. Lows around 60. Highs in the mid 80s. |
| Sat Hi: 79°FHi: 26°C Lo: 51°F Lo: 11°C |
Saturday... Partly sunny. Highs in the upper 70s. |
| Sun Hi: 71°FHi: 22°C Lo: 49°F Lo: 9°C |
Sunday... Partly sunny with a 20% chance of showers. Highs in the lower 70s. |
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