Oahe Grain Corporation

	County Forecast for Onida , SD

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211800-
Sully-
Including the city of Onida
437 AM CST Sun Dec 21 2025

Today   Partly sunny. Highs in the upper 30s. South winds 5 to 10 mph.
Tonight   Mostly cloudy in the evening, then becoming partly cloudy. Not as cold with lows in the mid 20s. East winds 5 to 10 mph with gusts up to 20 mph.
Monday   Patchy fog in the morning. Partly sunny. Highs in the mid 40s. Northeast winds around 5 mph, becoming west in the afternoon.
Monday night   Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 20s. Northwest winds 5 to 10 mph.
Tuesday   Mostly cloudy. Highs in the upper 30s. Northeast winds 5 to 10 mph, becoming southeast 10 to 15 mph with gusts up to 25 mph in the afternoon.
Tuesday night   Mostly cloudy. Near steady temperature in the lower 30s.
Wednesday   Partly sunny. Highs in the mid 40s.
Wednesday night   Mostly cloudy. Lows in the upper 20s. Temperature rising into the mid 30s after midnight.
Christmas day through friday   Partly cloudy. Highs around 40. Lows around 20.
Friday night and saturday   Mostly cloudy. Lows in the lower 20s. Highs around 40.

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Bryce Anderson – DTN Meteorologist

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System Moves Across North This Weekend; Warm Air Floods US Next Week

Some colder air will stick around for northern areas this weekend. But the week of Christmas will be warmer than normal. » More DTN Weather Commentary

Posted at 12:14PM Fri Dec 19, 2025 CST

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