Barnwell, SC 14 Day Weather - 29812 WeatherWorld.com
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Barnwell, SC Weather Forecast


Barnwell, SC Weather Forecast Dated: 216 PM Tue Sep 08 2026
Expect a very warm period with a mix of sun and clouds and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate. Isolated storms at times.
Tuesday, September 8, 2026
Mid-Morning
74°F 23°C
Sunny
Mid-Afternoon
89°F 32°C
Cloudy
Early-Evening
82°F 28°C
Partly Cloudy
Warm and summery near 89°F 32°C, sunny in the morning, cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds turning from the ENE to the ESE at 9 mph 14 km/h.
Wednesday, September 9, 2026
Mid-Morning
77°F 25°C
Overcast
Mid-Afternoon
92°F 33°C
Partly Cloudy
Early-Evening
84°F 29°C
Sunny
Hot and sweltering around 92°F 33°C, overcast in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling. Winds switching from the ENE to the ESE at 7 mph 11 km/h.
Thursday, September 10, 2026
Mid-Morning
78°F 25°C
Overcast
Mid-Afternoon
93°F 34°C
Partly Cloudy
Early-Evening
87°F 31°C
Partly Cloudy
Very hot with a high of 93°F 34°C, feeling closer to 96°F 35°C in the humidity, overcast in the morning, becoming cloudy through the afternoon and evening, with lower humidity and barometric pressure falling.
Friday, September 11, 2026
Mid-Morning
80°F 27°C
Partly Cloudy
Mid-Afternoon
94°F 34°C
Light Showers
Early-Evening
85°F 29°C
Scattered Showers
Sizzling hot near 94°F 34°C with a heat index reaching 98°F 37°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure.
Saturday, September 12, 2026
Mid-Morning
79°F 26°C
Sunny
Mid-Afternoon
91°F 33°C
Scattered Showers
Early-Evening
85°F 30°C
Sunny
Hot and sweltering around 91°F 33°C (heat index 96°F 36°C), scattered downpours possible, with lower humidity and steady pressure. Winds moving from the W to the SSE at 6 mph 9 km/h.
Sunday, September 13, 2026
Mid-Morning
79°F 26°C
Partly Cloudy
Mid-Afternoon
92°F 34°C
Overcast
Early-Evening
85°F 30°C
Overcast
Very hot with a high of 92°F 34°C, feeling closer to 99°F 37°C in the humidity, cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure.
Monday, September 14, 2026
Mid-Morning
80°F 27°C
Sunny
Mid-Afternoon
94°F 35°C
Cloudy
Early-Evening
90°F 32°C
Sunny
Sizzling hot near 94°F 35°C with a heat index reaching 100°F 38°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure.
Tuesday, September 15, 2026
Mid-Morning
82°F 28°C
Sunny
Mid-Afternoon
98°F 37°C
Cloudy
Early-Evening
90°F 32°C
Scattered Showers
Hot and sweltering around 98°F 37°C (heat index 103°F 39°C), scattered downpours possible, with lower humidity and steady pressure.
Wednesday, September 16, 2026
Mid-Morning
84°F 29°C
Sunny
Mid-Afternoon
99°F 37°C
Partly Cloudy
Early-Evening
88°F 31°C
Scattered Showers
Very hot with a high of 99°F 37°C, feeling closer to 104°F 40°C in the humidity, locally heavy downpours at times, with steady humidity and steady pressure. Winds out of the N at 8 mph 13 km/h.
Thursday, September 17, 2026
Mid-Morning
77°F 25°C
Overcast
Mid-Afternoon
74°F 24°C
Light Showers
Early-Evening
70°F 21°C
Light Showers
Mild with a high of 74°F 24°C, drier morning followed by showers lasting through evening, with steady humidity and steady pressure. Winds shifting from the SW to the NE at 11 mph 18 km/h. Gusts up to 21 mph 34 km/h.
Friday, September 18, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
77°F 25°C
Overcast
Early-Evening
77°F 25°C
Overcast
Pleasant near 77°F 25°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds NE at 9 mph 14 km/h.
Saturday, September 19, 2026
Mid-Morning
75°F 24°C
Sunny
Mid-Afternoon
85°F 29°C
Sunny
Early-Evening
81°F 28°C
Sunny
Very warm near 85°F 29°C, though humidity makes it feel like 89°F 32°C, cloudy through the afternoon, turning sunny this evening, with lower humidity and barometric pressure falling.
Sunday, September 20, 2026
Mid-Morning
77°F 25°C
Cloudy
Mid-Afternoon
86°F 30°C
Light Showers
Early-Evening
75°F 24°C
Heavy Rain
Warm and summery around 86°F 30°C (feels like 92°F 33°C), drier morning followed by showers lasting through evening, with steady humidity and steady pressure. Winds picking up from NW at 5 mph 8 km/h to E at 13 mph 21 km/h. Gusts up to 22 mph 35 km/h.
Monday, September 21, 2026
Mid-Morning
62°F 17°C
Light Showers
Mid-Afternoon
60°F 16°C
Light Showers
Early-Evening
60°F 15°C
Scattered Showers
Mildly cool near 60°F 16°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the NE to the NNE at 10 mph 15 km/h.
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