Lacy, SD 7-Day Weather Forecast

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Lacy, SD 7-Day Weather Forecast

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Lacy SD weather  - Clear - 78°F
Clear
78°F
Updated 7:31 pm
Feels Like 78°F
Humidity 81%
Wind SE 9 mph
Barometer  29.75 in
Dew Point 72°F
Lacy SD weather  - Clear - 26°C
Clear
26°C
Updated 7:31 pm
Feels Like 25°C
Humidity 81%
Wind SE 14 km/h
Barometer  100.7 kPa
Dew Point 22°C
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Lacy Weather Forecast

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Lacy, SD Weather Forecast Date: 821 PM CDT Mon Sep 07 2026

Weather forecast for Lacy, SD


Tonight
Lacy SD Weather for Tonight - Partly Cloudy
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
Lacy SD Weather for Tuesday - Partly Sunny
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
Lacy SD Weather for Wednesday - Sunny
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
Lacy SD Weather for Thursday - Sunny
Hi: 90°FHi: 32°C
Lo: 60°F
Lo: 16°C
Thursday... Sunny, warmer with highs around 90.
Fri
Lacy SD Weather for Friday - Mostly Clear
Hi: 85°FHi: 29°C
Lo: 55°F
Lo: 13°C
Friday... Mostly clear. Lows around 60. Highs in the mid 80s.
Sat
Lacy SD Weather for Saturday - Partly Sunny
Hi: 79°FHi: 26°C
Lo: 51°F
Lo: 11°C
Saturday... Partly sunny. Highs in the upper 70s.
Sun
Lacy SD Weather for Sunday - Chance Of Showers
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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