10-Day Weather Forecast - Keystone, SD

Mostly sunny. Highs in the upper 50s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the afternoon.

Partly cloudy. Lows in the upper 30s. North winds 5 to 10 mph.

Partly cloudy. Highs in the mid 50s. Southeast winds 5 to 10 mph with gusts up to 25 mph.

Partly cloudy. Lows in the mid 40s. South winds 5 to 10 mph. Gusts up to 20 mph in the evening.

Partly cloudy. Highs in the lower 60s.

Partly cloudy in the evening, then clearing. Lows in the mid 40s.

Becoming mostly cloudy. Highs in the upper 50s.

Mostly cloudy with rain. Lows around 40. Chance of rain 80 percent.

Rain likely. Snow likely in the afternoon. Little or no snow accumulation. Highs in the lower 40s. Chance of precipitation 70 percent.

Mostly cloudy with rain and snow likely. Little or no snow accumulation. Near steady temperature in the mid 30s. Chance of precipitation 70 percent.

Mostly cloudy with a chance of rain and snow in the morning, then partly cloudy with a slight chance of rain in the afternoon. Highs in the mid 40s. Chance of precipitation 40 percent.

Partly cloudy with a slight chance of rain and snow. Lows in the mid 30s. Chance of precipitation 20 percent.

Partly cloudy. A slight chance of rain and snow in the morning. Highs in the mid 40s. Chance of precipitation 20 percent.

Clear. Low temperature around 24F. Dew point will be around 9F with an average humidity of 44%. Winds will be 7 mph from the W.

Sunny. High temperature around 51F. Dew point will be around 26F with an average humidity of 41%. Winds will be 6 mph from the SSE.

Clear. Low temperature around 33F. Dew point will be around 23F with an average humidity of 61%. Winds will be 7 mph from the SW.

Partly cloudy. High temperature around 56F. Dew point will be around 32F with an average humidity of 51%. Winds will be 7 mph from the S.

Cloudy. Low temperature around 38F. Dew point will be around 29F with an average humidity of 67%. Winds will be 6 mph from the WSW.