10-Day Weather Forecast - Letcher, SD

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

Mostly clear. Humid with lows in the mid 60s. Southeast winds 5 to 10 mph.

Sunny with highs in the lower 90s. South winds 10 to 15 mph with gusts up to 25 mph.

Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 60s. Chance of rain 20 percent.

Mostly sunny. Highs in the lower 90s.

Partly cloudy in the evening then becoming mostly cloudy. A chance of thunderstorms. A chance of showers in the evening then showers likely after midnight. Lows in the upper 60s. Chance of rain 60 percent.

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

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

Mostly sunny. Highs in the mid 80s.

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

Mostly sunny. Highs in the upper 80s.

Mostly clear with a 45% chance for rain and thunderstorms. Low temperature around 66F. Dew point will be around 63F with an average humidity of 69%. Winds will be 9 mph from the S.

Sunny. High temperature around 90F. Dew point will be around 64F with an average humidity of 63%. Winds will be 5 mph from the S.

Clear. Low temperature around 67F. Dew point will be around 62F with an average humidity of 61%. Winds will be 6 mph from the SE.

Sunny. High temperature around 94F. Dew point will be around 64F with an average humidity of 57%. Winds will be 9 mph from the S.

Clear. Low temperature around 69F. Dew point will be around 63F with an average humidity of 54%. Winds will be 4 mph from the SE.

Mostly sunny. High temperature around 92F. Dew point will be around 62F with an average humidity of 53%. Winds will be 2 mph from the S.

Clear. Low temperature around 68F. Dew point will be around 60F with an average humidity of 52%. Winds will be 3 mph from the SE.