Weather Forecast for
Keystone, SD

Overnight: Partly cloudy, with a low around 59. West wind 3 to 7 mph. Winds could gust as high as 21 mph.

Sunday: Sunny, with a high near 81. Southwest wind 7 to 10 mph, with gusts as high as 32 mph.

Sunday Night: A chance of showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 3am, then showers likely after 3am. Mostly cloudy, then gradually becoming mostly clear, with a low around 56. Southwest wind around 7 mph becoming northwest in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 60%.

Monday: Sunny, with a high near 77. Breezy, with a northwest wind 7 to 12 mph becoming southwest 15 to 20 mph in the afternoon. Winds could gust as high as 44 mph.

Monday Night: Mostly clear, with a low around 53. West wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 41 mph.

Tuesday: Sunny, with a high near 80. West wind 6 to 9 mph, with gusts as high as 25 mph.

Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 55.

Wednesday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82.

Wednesday Night: Partly cloudy, with a low around 58.

Thursday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.

Thursday Night: Mostly clear, with a low around 61.

Friday: Mostly sunny, with a high near 90.

Friday Night: Partly cloudy, with a low around 63.

Independence Day: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85.

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