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Williston SC Weather - Clear - 74°F
Clear
74°F
Updated 3:42 am
Feels Like 82°F
Humidity 97%
Wind N 0 mph
Barometer  29.98 in
Dew Point 73°F
Williston SC Weather - Clear - 23°C
Clear
23°C
Updated 3:42 am
Feels Like 28°C
Humidity 97%
Wind N 0 km/h
Barometer  101.5 kPa
Dew Point 23°C
Williston, SC Weather and Current Conditionswilliston sc weather forecast

Williston, SC Weather Forecast

Williston South Carolina WeatherWilliston, South Carolina Weather Weather Forecast
14 day API Williston, SC weather forecast. Note. Our 7-day weather forecast for Williston, South Carolina is our most reliable and accurate forecast. This model should only be used as a likely scenario. Forecasting more than 7 days is difficult.
Williston, SC Weather Forecast Dated: 342 AM Fri Sep 04 2026
Expect a hot stretch with a mix of sun and clouds and frequent chances of rain over the coming period. moderate humidity and no major pressure swings will dominate. Isolated storms at times.

Friday, September 4, 2026

Mid-Morning
Williston Weather - 2026-09-04 - Morning - Sunny
79°F 26°C
Sunny
Mid-Afternoon
Williston Weather - 2026-09-04 - Afternoon - Sunny
95°F 35°C
Sunny
Early-Evening
Williston Weather - 2026-09-04 - Evening - Sunny
88°F 31°C
Sunny
Sizzling hot near 95°F 35°C with a heat index reaching 100°F 38°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the S to the SSE at 9 mph 15 km/h.

Saturday, September 5, 2026

Mid-Morning
Williston Weather - 2026-09-05 - Morning - Sunny
80°F 26°C
Sunny
Mid-Afternoon
Williston Weather - 2026-09-05 - Afternoon - Sunny
98°F 37°C
Sunny
Early-Evening
Williston Weather - 2026-09-05 - Evening - Partly Cloudy
90°F 32°C
Partly Cloudy
Hot and sweltering around 98°F 37°C (heat index 104°F 40°C), sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds switching from the SW to the N at 8 mph 14 km/h.

Sunday, September 6, 2026

Mid-Morning
Williston Weather - 2026-09-06 - Morning - Sunny
76°F 25°C
Sunny
Mid-Afternoon
Williston Weather - 2026-09-06 - Afternoon - Sunny
93°F 34°C
Sunny
Early-Evening
Williston Weather - 2026-09-06 - Evening - Overcast
85°F 29°C
Overcast
Very hot with a high of 93°F 34°C, feeling closer to 96°F 36°C in the humidity, sunny through the afternoon, turning overcast this evening, with lower humidity and steady pressure. Winds moving from the NE to the ENE at 10 mph 15 km/h.

Monday, September 7, 2026

Mid-Morning
Williston Weather - 2026-09-07 - Morning - Partly Cloudy
75°F 24°C
Partly Cloudy
Mid-Afternoon
Williston Weather - 2026-09-07 - Afternoon - Sunny
88°F 31°C
Sunny
Early-Evening
Williston Weather - 2026-09-07 - Evening - Overcast
82°F 28°C
Overcast
Warm temperatures up to 88°F 31°C, partly cloudy in the morning, sunny in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds out of the E at 10 mph 17 km/h.

Tuesday, September 8, 2026

Mid-Morning
Williston Weather - 2026-09-08 - Morning - Overcast
73°F 23°C
Overcast
Mid-Afternoon
Williston Weather - 2026-09-08 - Afternoon - Overcast
89°F 32°C
Overcast
Early-Evening
Williston Weather - 2026-09-08 - Evening - Cloudy
83°F 29°C
Cloudy
Very warm with a high of 89°F 32°C, overcast throughout the day, with lower humidity and steady pressure. Winds shifting from the ENE to the SE at 8 mph 12 km/h.

Wednesday, September 9, 2026

Mid-Morning
Williston Weather - 2026-09-09 - Morning - Partly Cloudy
76°F 25°C
Partly Cloudy
Mid-Afternoon
Williston Weather - 2026-09-09 - Afternoon - Cloudy
92°F 34°C
Cloudy
Early-Evening
Williston Weather - 2026-09-09 - Evening - Cloudy
87°F 30°C
Cloudy
Very hot with temperatures reaching 92°F 34°C, cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure.

Thursday, September 10, 2026

Mid-Morning
Williston Weather - 2026-09-10 - Morning - Sunny
78°F 26°C
Sunny
Mid-Afternoon
Williston Weather - 2026-09-10 - Afternoon - Sunny
96°F 36°C
Sunny
Early-Evening
Williston Weather - 2026-09-10 - Evening - Sunny
92°F 33°C
Sunny
Sizzling hot near 96°F 36°C with a heat index reaching 100°F 38°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the WSW to the SSW at 8 mph 12 km/h.

Friday, September 11, 2026

Mid-Morning
Williston Weather - 2026-09-11 - Morning - Sunny
84°F 29°C
Sunny
Mid-Afternoon
Williston Weather - 2026-09-11 - Afternoon - Cloudy
102°F 39°C
Cloudy
Early-Evening
Williston Weather - 2026-09-11 - Evening - Scattered Showers
91°F 33°C
Scattered Showers
Sweltering temperatures near 102°F 39°C with a heat index of 106°F 41°C, scattered downpours possible, with lower humidity and steady pressure.

Saturday, September 12, 2026

Mid-Morning
Williston Weather - 2026-09-12 - Morning - Cloudy
78°F 25°C
Cloudy
Mid-Afternoon
Williston Weather - 2026-09-12 - Afternoon - Overcast
90°F 32°C
Overcast
Early-Evening
Williston Weather - 2026-09-12 - Evening - Light Showers
86°F 30°C
Light Showers
Very hot with a high of 90°F 32°C, feeling closer to 95°F 35°C in the humidity, dry most of the day, with showers developing late, with lower humidity and steady pressure. A stray shower or storm late in the day.

Sunday, September 13, 2026

Mid-Morning
Williston Weather - 2026-09-13 - Morning - Partly Cloudy
79°F 26°C
Partly Cloudy
Mid-Afternoon
Williston Weather - 2026-09-13 - Afternoon - Sunny
94°F 35°C
Sunny
Early-Evening
Williston Weather - 2026-09-13 - Evening - Partly Cloudy
87°F 31°C
Partly Cloudy
Sizzling hot near 94°F 35°C with a heat index reaching 99°F 37°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds switching from the SSW to the SSE at 9 mph 14 km/h.

Monday, September 14, 2026

Mid-Morning
Williston Weather - 2026-09-14 - Morning - Sunny
81°F 27°C
Sunny
Mid-Afternoon
Williston Weather - 2026-09-14 - Afternoon - Nearby Thunderstorms
93°F 34°C
Nearby Thunderstorms
Early-Evening
Williston Weather - 2026-09-14 - Evening - Scattered Showers
86°F 30°C
Scattered Showers
Hot and sweltering around 93°F 34°C (heat index 100°F 38°C), locally heavy thunderstorms at times, with lower humidity and steady pressure. Winds moving from the SW to the S at 8 mph 13 km/h.

Tuesday, September 15, 2026

Mid-Morning
Williston Weather - 2026-09-15 - Morning - Sunny
79°F 26°C
Sunny
Mid-Afternoon
Williston Weather - 2026-09-15 - Afternoon - Scattered Showers
92°F 34°C
Scattered Showers
Early-Evening
Williston Weather - 2026-09-15 - Evening - Scattered Showers
86°F 30°C
Scattered Showers
Very hot with a high of 92°F 34°C, feeling closer to 98°F 37°C in the humidity, locally heavy downpours at times, with lower humidity and steady pressure. Winds swinging from the SSW to the SSE at 8 mph 13 km/h.

Wednesday, September 16, 2026

Mid-Morning
Williston Weather - 2026-09-16 - Morning - Sunny
77°F 25°C
Sunny
Mid-Afternoon
Williston Weather - 2026-09-16 - Afternoon - Cloudy
92°F 33°C
Cloudy
Early-Evening
Williston Weather - 2026-09-16 - Evening - Partly Cloudy
87°F 31°C
Partly Cloudy
Sizzling hot near 92°F 33°C with a heat index reaching 97°F 36°C, cloudy throughout the day, with lower humidity and steady pressure. Winds shifting from the SE to the ESE at 8 mph 13 km/h.

Thursday, September 17, 2026

Mid-Morning
Williston Weather - 2026-09-17 - Morning - Cloudy
77°F 25°C
Cloudy
Mid-Afternoon
Williston Weather - 2026-09-17 - Afternoon - Sunny
92°F 33°C
Sunny
Early-Evening
Williston Weather - 2026-09-17 - Evening - Sunny
87°F 30°C
Sunny
Hot temperatures near 92°F 33°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds turning from the NE to the ESE at 9 mph 14 km/h.

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Weather by the Numbers

Fri, 4th
Williston SC Weather - Friday, Sep 4, 2026 - Sunny
Hi: 96°F 36°C
Lo: 73°F 23°C
Sunrise 07:02 AM
Sunset 07:47 PM
Wind SSE 6 mph9 km/h
Dew Point 78°F26°C
uv Index 8
Barometric Pressure 30.03 in1017 mb
POP 4% *
Humidity 64%
Sat, 5th
Williston SC Weather - Saturday, Sep 5, 2026 - Sunny
Hi: 98°F 37°C
Lo: 73°F 23°C
Sunrise 07:03 AM
Sunset 07:46 PM
Wind SW 5 mph8 km/h
Dew Point 68°F20°C
uv Index 8
Barometric Pressure 29.91 in1013 mb
POP 1% *
Humidity 46%
Sun, 6th
Williston SC Weather - Sunday, Sep 6, 2026 - Sunny
Hi: 93°F 34°C
Lo: 73°F 23°C
Sunrise 07:03 AM
Sunset 07:44 PM
Wind ENE 10 mph17 km/h
Dew Point 67°F20°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 2% *
Humidity 53%
Mon, 7th
Williston SC Weather - Monday, Sep 7, 2026 - Partly Cloudy
Hi: 89°F 32°C
Lo: 72°F 22°C
Sunrise 07:04 AM
Sunset 07:43 PM
Wind E 13 mph21 km/h
Dew Point 59°F15°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 4% *
Humidity 42%
Tue, 8th
Williston SC Weather - Tuesday, Sep 8, 2026 - Overcast
Hi: 90°F 32°C
Lo: 69°F 20°C
Sunrise 07:05 AM
Sunset 07:42 PM
Wind E 10 mph17 km/h
Dew Point 64°F18°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 11% *
Humidity 48%
Wed, 9th
Williston SC Weather - Wednesday, Sep 9, 2026 - Overcast
Hi: 93°F 34°C
Lo: 71°F 22°C
Sunrise 07:05 AM
Sunset 07:40 PM
Wind SE 2 mph4 km/h
Dew Point 63°F17°C
uv Index 7
Barometric Pressure 30.24 in1024 mb
POP 5% *
Humidity 45%
Thu, 10th
Williston SC Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 98°F 37°C
Lo: 73°F 23°C
Sunrise 07:06 AM
Sunset 07:39 PM
Wind WSW 7 mph11 km/h
Dew Point 64°F18°C
uv Index 8
Barometric Pressure 30.12 in1020 mb
POP 1% *
Humidity 43%
Fri, 11th
Williston SC Weather - Friday, Sep 11, 2026 - Sunny
Hi: 102°F 39°C
Lo: 79°F 26°C
Sunrise 07:07 AM
Sunset 07:38 PM
Wind W 7 mph12 km/h
Dew Point 65°F19°C
uv Index 9
Barometric Pressure 30 in1016 mb
POP 1% *
Humidity 38%
Sat, 12th
Williston SC Weather - Saturday, Sep 12, 2026 - Overcast
Hi: 91°F 33°C
Lo: 75°F 24°C
Sunrise 07:07 AM
Sunset 07:36 PM
Wind SSE 4 mph6 km/h
Dew Point 70°F21°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 12% *
Humidity 61%
Sun, 13th
Williston SC Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 95°F 35°C
Lo: 75°F 24°C
Sunrise 07:08 AM
Sunset 07:35 PM
Wind S 4 mph6 km/h
Dew Point 68°F20°C
uv Index 8
Barometric Pressure 30.12 in1020 mb
POP 3% *
Humidity 52%
Mon, 14th
Williston SC Weather - Monday, Sep 14, 2026 - Thundery Outbreaks In Nearby
Hi: 95°F 35°C
Lo: 77°F 25°C
Sunrise 07:09 AM
Sunset 07:34 PM
Wind SSW 7 mph11 km/h
Dew Point 69°F21°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 3% *
Humidity 51%
Tue, 15th
Williston SC Weather - Tuesday, Sep 15, 2026 - Partly Cloudy
Hi: 94°F 34°C
Lo: 75°F 24°C
Sunrise 07:09 AM
Sunset 07:32 PM
Wind SW 6 mph10 km/h
Dew Point 70°F21°C
uv Index 8
Barometric Pressure 30.15 in1021 mb
POP 3% *
Humidity 55%
Wed, 16th
Williston SC Weather - Wednesday, Sep 16, 2026 - Partly Cloudy
Hi: 93°F 34°C
Lo: 74°F 23°C
Sunrise 07:10 AM
Sunset 07:31 PM
Wind ESE 7 mph11 km/h
Dew Point 69°F21°C
uv Index 8
Barometric Pressure 30.21 in1023 mb
POP 4% *
Humidity 57%
Thu, 17th
Williston SC Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 92°F 33°C
Lo: 74°F 23°C
Sunrise 07:11 AM
Sunset 07:29 PM
Wind E 8 mph13 km/h
Dew Point 65°F19°C
uv Index 8
Barometric Pressure 30.21 in1023 mb
POP 5% *
Humidity 50%
* POP = Probability of Precipitation. Data for 12:00 PM.