10-Day Weather Forecast - Harrison, SD

Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 80s. North winds around 5 mph. Chance of rain 20 percent.

Partly cloudy with a slight chance of showers and thunderstorms in the evening then mostly clear after midnight. Humid with lows in the lower 60s. Northeast winds 5 to 10 mph becoming southeast after midnight. Chance of rain 20 percent.

Sunny with highs in the upper 80s. East winds 5 to 10 mph.

Mostly clear. Lows in the mid 60s. Southeast winds around 10 mph.

Sunny. Highs in the lower 90s.

Partly cloudy. Lows in the upper 60s.

Mostly sunny. Highs in the lower 90s.

Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 50 percent.

Mostly cloudy in the morning then becoming partly sunny. A chance of showers in the morning. Highs in the upper 80s. Chance of rain 50 percent.

Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the mid 60s. Chance of rain 40 percent.

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 69F. Dew point will be around 66F with an average humidity of 70%. Winds will be 6 mph from the SE.

Sunny. High temperature around 92F. Dew point will be around 65F with an average humidity of 60%. Winds will be 4 mph from the SE.

Clear. Low temperature around 71F. Dew point will be around 65F with an average humidity of 60%. Winds will be 6 mph from the SE.

Sunny. High temperature around 92F. Dew point will be around 65F with an average humidity of 58%. Winds will be 6 mph from the SE.

Clear. Low temperature around 69F. Dew point will be around 63F with an average humidity of 58%. Winds will be 6 mph from the SE.