57466 Weather (Onaka, SD)

Weather forecast for: Onaka SD

Last Update: 6:36 am CDT Aug 3, 2026

Today: A slight chance of showers and thunderstorms before 8am. Cloudy, then gradually becoming mostly sunny and hot, with a high near 91. Breezy, with a south southeast wind 10 to 20 mph becoming west southwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 20%.

Tonight: Patchy smoke before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 55. Windy, with a north northwest wind 23 to 33 mph decreasing to 11 to 21 mph after midnight. Winds could gust as high as 45 mph.

Tuesday: Sunny, with a high near 76. West northwest wind 11 to 14 mph, with gusts as high as 22 mph.

Tuesday Night: Mostly clear, with a low around 54. West wind 6 to 10 mph becoming south southwest in the evening.

Wednesday: Mostly sunny, with a high near 82. West southwest wind 8 to 14 mph, with gusts as high as 22 mph.

Wednesday Night: Partly cloudy, with a low around 59. South southwest wind 10 to 13 mph.

Thursday: Sunny, with a high near 87. West southwest wind around 11 mph, with gusts as high as 20 mph.

Thursday Night: Mostly clear, with a low around 61. West wind around 10 mph becoming south in the evening.

Friday: Sunny and hot, with a high near 90. South southwest wind around 10 mph.

Friday Night: Mostly clear, with a low around 64.

Saturday: Sunny and hot, with a high near 93.

Saturday Night: Mostly clear, with a low around 64.

Sunday: Mostly sunny, with a high near 88.