10-Day Weather Forecast - Harrison, SD

Sunny. Highs in the lower 80s. Northeast winds 5 to 10 mph becoming east in the afternoon.

Mostly clear. Not as cool with lows in the mid 50s. Southeast winds 10 to 15 mph with gusts up to 25 mph.

Sunny windy with highs around 90. South winds 15 to 25 mph increasing to 25 to 30 mph with gusts up to 45 mph in the afternoon.

Mostly cloudy. A slight chance of showers in the evening then a chance of showers with a slight chance of thunderstorms after midnight. Windy with lows in the upper 50s. South winds 20 to 30 mph with gusts up to 40 mph. Chance of rain 50 percent.

Mostly sunny and windy. Not as warm with highs in the mid 70s.

Partly cloudy and windy. Much cooler with lows in the upper 30s.

Mostly sunny and breezy. Much cooler with highs in the upper 50s.

Partly cloudy. Lows in the lower 30s.

Partly sunny. Highs in the mid 50s.

Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 30s.

Partly sunny. A chance of rain showers in the afternoon. Highs in the mid 50s. Chance of rain 30 percent.

Mostly cloudy. A chance of rain showers in the evening. Lows in the lower 30s. Chance of rain 30 percent.

Partly sunny. Highs in the upper 50s.

Mostly clear. Low temperature around 34F. Dew point will be around 30F with an average humidity of 62%. Winds will be 6 mph from the N.

Sunny. High temperature around 61F. Dew point will be around 30F with an average humidity of 50%. Winds will be 3 mph from the NW.

Mostly clear. Low temperature around 38F. Dew point will be around 31F with an average humidity of 52%. Winds will be 4 mph from the E.

Partly cloudy. High temperature around 62F. Dew point will be around 35F with an average humidity of 54%. Winds will be 4 mph from the SE.

Partly cloudy. Low temperature around 39F. Dew point will be around 36F with an average humidity of 61%. Winds will be 6 mph from the NE.