10-Day Weather Forecast - Johnston, SC

Mostly cloudy in the morning then becoming mostly sunny. Highs in the mid 60s. West winds 5 to 10 mph.

Clear. Lows in the upper 40s. West winds around 5 mph.

Sunny. Highs in the mid 70s. Northwest winds around 5 mph becoming north in the afternoon.

Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 50s. Southeast winds around 5 mph.

Sunny. Highs in the mid 70s.

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s.

Partly sunny. Highs in the mid 70s.

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 50s.

Mostly sunny. Highs in the mid 70s.

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s.

Partly sunny. Highs in the mid 70s.

Mostly cloudy. A chance of rain in the evening. Lows in the lower 40s. Chance of rain 30 percent.

Partly sunny. Cooler with highs in the mid 50s.

Clear. Low temperature around 37F. Dew point will be around 28F with an average humidity of 56%. Winds will be 1 mph from the E.

Sunny. High temperature around 55F. Dew point will be around 31F with an average humidity of 53%. Winds will be 1 mph from the SW.

Clear. Low temperature around 38F. Dew point will be around 30F with an average humidity of 61%. Winds will be 2 mph from the SW.

Sunny. High temperature around 59F. Dew point will be around 37F with an average humidity of 59%. Winds will be 4 mph from the SW.

Mostly clear. Low temperature around 43F. Dew point will be around 39F with an average humidity of 74%. Winds will be 3 mph from the SW.