10-Day Weather Forecast - Jefferson, SD

Mostly sunny. Humid with highs in the lower 90s. South winds 10 to 15 mph.

Partly cloudy. Humid with lows around 70. South winds 10 to 15 mph with gusts up to 25 mph.

Partly sunny with a slight chance of showers and thunderstorms. Humid with highs around 90. Southwest winds 10 to 15 mph. Chance of rain 20 percent.

Becoming mostly cloudy after midnight. A chance of thunderstorms. Showers likely mainly in the evening. Lows in the mid 60s. Chance of rain 70 percent.

Mostly cloudy in the morning then becoming partly sunny. Highs in the mid 80s.

Partly cloudy in the evening then becoming mostly cloudy. A chance of showers. Lows in the mid 60s. Chance of rain 30 percent.

Mostly cloudy in the morning then becoming mostly sunny. Highs in the mid 80s.

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 60s.

Sunny. Highs in the lower 90s.

Mostly clear. Lows in the upper 60s.

Sunny hot with highs in the mid 90s.

Clear. Low temperature around 72F. Dew point will be around 67F with an average humidity of 62%. Winds will be 9 mph from the S.

Sunny. High temperature around 93F. Dew point will be around 65F with an average humidity of 55%. Winds will be 4 mph from the S.

Clear. Low temperature around 70F. Dew point will be around 65F with an average humidity of 62%. Winds will be 5 mph from the SE.

Sunny. High temperature around 91F. Dew point will be around 65F with an average humidity of 58%. Winds will be 4 mph from the SE.

Clear. Low temperature around 70F. Dew point will be around 64F with an average humidity of 60%. Winds will be 5 mph from the SE.

Mostly sunny. High temperature around 89F. Dew point will be around 64F with an average humidity of 57%. Winds will be 4 mph from the SE.

Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 69F. Dew point will be around 64F with an average humidity of 63%. Winds will be 4 mph from the SE.