10-Day Weather Forecast - Sinai, SD

Partly sunny. Cooler with highs in the lower 20s. South winds 5 to 10 mph becoming southwest this afternoon.

Mostly cloudy. Cold with lows around 11. Northeast winds around 5 mph.

Partly sunny in the morning then becoming mostly cloudy. Highs in the lower 20s. East winds around 5 mph.

Mostly cloudy and cold. Near steady temperature around 18. Southeast winds around 5 mph becoming south after midnight.

Partly sunny. Highs in the upper 20s. Southwest winds around 5 mph becoming northwest in the afternoon.

Partly cloudy in the evening then becoming mostly cloudy. Cold with lows 10 to 15. Temperature rising to around 15 after midnight.

Mostly cloudy in the morning then becoming partly sunny. Highs in the mid 30s.

Partly cloudy in the evening then becoming mostly cloudy. Lows around 20.

Partly sunny. Highs around 40.

Mostly cloudy in the evening then becoming partly cloudy. Lows in the mid 20s.

Mostly sunny. Highs around 40.

Mostly cloudy. Lows around 20.

Mostly sunny. Highs in the upper 30s.

Clear. Low temperature around 20F. Dew point will be around 17F with an average humidity of 78%. Winds will be 2 mph from the W.

Partly cloudy. High temperature around 24F. Dew point will be around 14F with an average humidity of 70%. Winds will be 1 mph from the W.

Partly cloudy. Low temperature around 20F. Dew point will be around 14F with an average humidity of 76%. Winds will be 3 mph from the SE.

Cloudy. High temperature around 23F. Dew point will be around 15F with an average humidity of 75%. Winds will be 2 mph from the S.

Cloudy with a slight chance of snow. Chance of precipitation 30%. Low temperature around 12F. Dew point will be around 11F with an average humidity of 84%. Winds will be 5 mph from the NW.