10-Day Weather Forecast - Mount Vernon, SD

Mostly sunny. A chance of showers and thunderstorms this morning. Highs in the lower 90s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent. Heat index values in the upper 90s this afternoon.

Partly cloudy in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Humid with lows around 70. Southeast winds 10 to 15 mph. Chance of rain 40 percent.

Mostly sunny with a chance of showers with a slight chance of thunderstorms. Humid with highs in the upper 80s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.

Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers with a slight chance of thunderstorms. Humid with lows in the upper 60s. Southeast winds 15 to 20 mph. Chance of rain 40 percent.

Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Breezy with highs in the lower 90s. South winds 15 to 25 mph with gusts up to 40 mph. Chance of rain 40 percent. Heat index values in the upper 90s in the afternoon.

Showers likely with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Breezy with lows around 70. Chance of rain 70 percent.

Partly sunny in the morning, then clearing. Highs in the mid 80s.

Mostly clear. Cooler with lows around 60.

Sunny. Highs in the lower 80s.

Partly cloudy. Lows in the upper 50s.

Mostly sunny. Highs in the mid 80s.

Partly cloudy. Lows in the lower 60s.

Mostly sunny. Highs in the upper 80s.

Clear. Low temperature around 62F. Dew point will be around 59F with an average humidity of 68%. Winds will be 8 mph from the SE.

Sunny. High temperature around 84F. Dew point will be around 59F with an average humidity of 59%. Winds will be 9 mph from the S.

Clear. Low temperature around 65F. Dew point will be around 61F with an average humidity of 66%. Winds will be 9 mph from the S.

Sunny. High temperature around 84F. Dew point will be around 61F with an average humidity of 61%. Winds will be 7 mph from the S.

Mostly clear with a chance of rain. Chance of precipitation 35%. Low temperature around 64F. Dew point will be around 63F with an average humidity of 71%. Winds will be 6 mph from the S.