10-Day Weather Forecast - Letcher, SD

Sunny, hot with highs in the mid 90s. Northeast winds 5 to 10 mph, becoming east 10 to 15 mph in the afternoon.

Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the lower 70s. Southeast winds 10 to 15 mph. Chance of rain 20 percent.

Mostly sunny. A chance of showers with a slight chance of thunderstorms in the morning. Humid with highs in the mid 90s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. Heat index values in the upper 90s in the afternoon.

Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Humid with lows around 70. Southeast winds 10 to 15 mph. Chance of rain 50 percent.

Mostly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. Highs in the upper 80s. Chance of rain 50 percent.

Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 50 percent.

Mostly cloudy with a chance of showers and thunderstorms in the morning, then partly sunny in the afternoon. Highs in the upper 80s. Chance of rain 50 percent.

Showers likely with a chance of thunderstorms in the evening, then a chance of showers after midnight. Lows around 70. Chance of rain 60 percent.

Mostly cloudy in the morning, then becoming mostly sunny. Highs in the upper 80s.

Partly cloudy. Lows in the lower 60s.

Mostly sunny. Highs in the mid 80s.

Partly cloudy. Lows in the upper 50s.

Mostly sunny. Highs in the lower 80s.

Mostly clear. Low temperature around 62F. Dew point will be around 60F with an average humidity of 75%. Winds will be 5 mph from the SE.

Partly cloudy. High temperature around 78F. Dew point will be around 60F with an average humidity of 68%. Winds will be 6 mph from the SE.

Mostly clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 62F. Dew point will be around 61F with an average humidity of 78%. Winds will be 5 mph from the SE.

Sunny. High temperature around 77F. Dew point will be around 59F with an average humidity of 67%. Winds will be 4 mph from the SE.

Clear. Low temperature around 60F. Dew point will be around 60F with an average humidity of 79%. Winds will be 3 mph from the SE.