Weather in Marietta, SC
Updated 2026-09-26 12:00 local time · ZIP codes 29661
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
74°1% rain77°1% rain80°1% rain81°1% rain
81°6% rain79°1% rain
75°4% rain70°1% rain
66°1% rain67°1% rain66°1% rain
64°10% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 10%).
It feels like 70°F with winds near 3 mph.
70°F, 1% rain chance and 6 mph wind.
Visibility is around 6 mi; gusts may reach 27 mph.
Current temperature is 74°F, wind 3 mph, rain chance up to 10%.
UV index is 6. Sunscreen and sunglasses are sensible for longer outdoor time.
Local weather characteristics in Marietta
South Carolina has hot humid summers and generally mild winters. Coastal areas are exposed to tropical systems, while the northwest is somewhat cooler with elevation.
Marietta is part of the South weather region. The forecast point is near 35.02°N latitude and 82.50°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Marietta weather today
Sunny and 74°F in Marietta, SC. Today's high is 81°F with a 2% rain chance. Winds are around 3 mph with gusts near 4 mph. Relative humidity is 27%, pressure is 30.02 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Marietta
Sunrise is at 07:21 AM and sunset is at 07:21 PM. Tomorrow's forecast calls for Sunny with a high near 80°F and a low near 54°F. The maximum rain chance is 2%.