Johnston, SC 14 Day Weather - 29832 WeatherWorld.com
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Johnston, SC Weather Forecast


Johnston, SC Weather Forecast Dated: 1223 AM Wed Sep 09 2026
Expect a very warm period with a mix of sun and clouds and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate. Isolated storms at times.
Wednesday, September 9, 2026
Mid-Morning
73°F 23°C
Cloudy
Mid-Afternoon
88°F 31°C
Partly Cloudy
Early-Evening
84°F 29°C
Partly Cloudy
Warm and summery near 88°F 31°C, overcast in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and barometric pressure falling. Winds turning from the NE to the SSE at 4 mph 7 km/h.
Thursday, September 10, 2026
Mid-Morning
75°F 24°C
Overcast
Mid-Afternoon
90°F 32°C
Overcast
Early-Evening
87°F 31°C
Overcast
Hot and sweltering around 90°F 32°C, overcast throughout the day, with lower humidity and barometric pressure falling.
Friday, September 11, 2026
Mid-Morning
80°F 27°C
Sunny
Mid-Afternoon
92°F 33°C
Overcast
Early-Evening
87°F 30°C
Partly Cloudy
Sizzling hot with 92°F 33°C, sunny in the morning, overcast in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure.
Saturday, September 12, 2026
Mid-Morning
76°F 25°C
Sunny
Mid-Afternoon
84°F 29°C
Light Showers
Early-Evening
83°F 29°C
Scattered Showers
Warm and summery around 84°F 29°C (feels like 89°F 32°C), periods of heavy rain and gusty conditions, with lower humidity and steady pressure. A stray shower or storm late in the day.
Sunday, September 13, 2026
Mid-Morning
75°F 24°C
Partly Cloudy
Mid-Afternoon
89°F 32°C
Overcast
Early-Evening
86°F 30°C
Overcast
Quite warm reaching 89°F 32°C, feeling like 96°F 35°C during peak afternoon, cloudy in the morning, partly cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure.
Monday, September 14, 2026
Mid-Morning
80°F 27°C
Sunny
Mid-Afternoon
92°F 33°C
Partly Cloudy
Early-Evening
88°F 31°C
Partly Cloudy
Very hot with a high of 92°F 33°C, feeling closer to 97°F 36°C in the humidity, 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
81°F 27°C
Overcast
Mid-Afternoon
94°F 34°C
Sunny
Early-Evening
90°F 32°C
Sunny
Sizzling hot near 94°F 34°C with a heat index reaching 98°F 37°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure.
Wednesday, September 16, 2026
Mid-Morning
81°F 27°C
Overcast
Mid-Afternoon
91°F 33°C
Nearby Thunderstorms
Early-Evening
82°F 28°C
Scattered Showers
Hot and sweltering around 91°F 33°C (heat index 97°F 36°C), locally heavy thunderstorms at times, with steady humidity and steady pressure. Winds building from SSW at 2 mph 4 km/h to SE at 11 mph 18 km/h.
Thursday, September 17, 2026
Mid-Morning
77°F 25°C
Sunny
Mid-Afternoon
88°F 31°C
Overcast
Early-Evening
86°F 30°C
Overcast
Very warm near 88°F 31°C, though humidity makes it feel like 94°F 34°C, sunny in the morning, partly cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
77°F 25°C
Sunny
Mid-Afternoon
83°F 29°C
Cloudy
Early-Evening
73°F 23°C
Sunny
Warm and summery around 83°F 29°C (feels like 87°F 31°C), sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure.
Saturday, September 19, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
85°F 29°C
Sunny
Early-Evening
83°F 28°C
Sunny
Warm and summery near 85°F 29°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds moving from the WNW to the SSW at 7 mph 11 km/h.
Sunday, September 20, 2026
Mid-Morning
74°F 23°C
Cloudy
Mid-Afternoon
81°F 27°C
Light Showers
Early-Evening
73°F 23°C
Heavy Rain
Very warm near 81°F 27°C, though humidity makes it feel like 84°F 29°C, dry early, with showers continuing through afternoon and evening, with steady humidity and steady pressure. Winds swinging from the WSW to the ENE at 12 mph 20 km/h. Gusts up to 21 mph 34 km/h.
Monday, September 21, 2026
Mid-Morning
56°F 13°C
Light Showers
Mid-Afternoon
55°F 13°C
Light Showers
Early-Evening
56°F 13°C
Overcast
Brisk around 55°F 13°C, intermittent showers through midday, easing by evening, with steady humidity and steady pressure. Winds shifting from the NE to the NNE at 10 mph 15 km/h. Gusts up to 21 mph 33 km/h.
Tuesday, September 22, 2026
Mid-Morning
57°F 14°C
Overcast
Mid-Afternoon
64°F 18°C
Light Showers
Early-Evening
31°F 9°C
Light Showers
Mildly cool near 64°F 18°C, clouds and showers taking over for the afternoon and evening, with lower humidity and barometric pressure falling. Winds turning from the NNE to the at 4 mph 7 km/h.
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