Williston, SC Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Williston, SC.

2 Currently Active Alerts for Williston

Current Conditions — Williston, SC

AIKEN (KAIK)

Mostly Cloudy

81.1 F
Humidity:24%
Wind Speed: 6.9 mph
Barometer:30.10 in
Dewpoint:40.6 F
Visibility:10.00 mi
Precip:--
Heat Index:79.5 F
Wind Chill:NA
Apr 22 2026, 05:55 PM EDT
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5-Day Forecast — Williston, SC

Wednesday

High 84 °F
Smoke
Wednesday
Night
Low 53 °F
Smoke
Thursday

High 87 °F
Mostly Sunny
Thursday
Night
Low 55 °F
Mostly Clear
Friday

High 87 °F
Partly Sunny
Friday
Night
Low 59 °F
Mostly Clear
Saturday

High 87 °F
Chance of T-storms
Saturday
Night
Low 60 °F
Chance of T-storms
Sunday

High 82 °F
Chance of T-storms

Detailed Forecast — Williston, SC

Wednesday
Smoke. High near 84°F. Wind 3 to 6 mph, with gusts as high as 13 mph.
Wednesday Night
Smoke. Low around 53°F. Wind 2 to 3 mph, with gusts as high as 10 mph.
Thursday
Mostly Sunny. High near 87°F. Wind 2 to 3 mph, with gusts as high as 10 mph.
Thursday Night
Mostly Clear. Low around 55°F. Wind 2 to 3 mph, with gusts as high as 12 mph.
Friday
Partly Sunny. High near 87°F. Wind 2 to 5 mph, with gusts as high as 14 mph.
Friday Night
Mostly Clear. Low around 59°F. Wind 2 to 3 mph, with gusts as high as 10 mph.
Saturday
Chance of Thunderstorms. High near 87°F. Wind 3 to 7 mph, with gusts as high as 15 mph.
Saturday Night
Chance of Thunderstorms. Low around 60°F. Wind 2 to 5 mph, with gusts as high as 10 mph.
Sunday
Chance of Thunderstorms. High near 82°F. Wind 5 to 6 mph, with gusts as high as 13 mph.
Sunday Night
Chance of Showers. Low around 57°F. Wind around 5 mph, with gusts as high as 12 mph.
Monday
Chance of Thunderstorms. High near 80°F. Wind around 6 mph, with gusts as high as 14 mph.
Monday Night
Chance of Thunderstorms. Low around 59°F. Wind around 5 mph, with gusts as high as 12 mph.
Tuesday
Chance of Thunderstorms. High near 84°F. Wind 5 to 9 mph, with gusts as high as 18 mph.
SC Radar
Current Radar • SC
Day 1 Outlook • April 22, 2026

Observation History — Williston, SC

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
05:55 PM EDT 6.9 10.00 Mostly Cloudy -- 81.1 40.6 24% NA 79.5 30.10 1019.3
05:35 PM EDT SW 12.7 10.00 Mostly Cloudy -- 82.8 40.1 22% NA 80.4 30.10 1019.3
05:15 PM EDT W 9.2 10.00 Partly Cloudy -- 80.6 40.3 24% NA 79.5 30.12 1019.7
04:55 PM EDT 8.1 10.00 Partly Cloudy -- 83.1 % NA NA 30.12 1019.7
04:35 PM EDT 15.0 10.00 Partly Cloudy -- 83.8 39.4 21% NA 81.1 30.12 1020.0
04:15 PM EDT 12.8 G 17.2 7.00 Clear -- 84.0 % NA NA 30.12 1020.0
03:55 PM EDT 11.4 7.00 Clear -- 83.8 % NA NA 30.13 1020.3
03:35 PM EDT W 6.9 7.00 Partly Cloudy -- 82.8 % NA NA 30.14 1020.7
03:15 PM EDT 7.00 NULL -- NULL % NA NA M
02:55 PM EDT W 9.2 7.00 Clear -- 83.1 % NA NA 30.17 1021.7
02:35 PM EDT W 8.1 G 19.7 7.00 Clear -- 82.2 42.4 25% NA 80.2 30.18 1022.0
01:55 PM EDT W 9.2 7.00 Haze -- 80.8 43.0 26% NA 79.9 30.20 1022.7
01:35 PM EDT 11.5 G 17.3 7.00 Clear -- 80.2 % NA NA 30.21 1023.0
01:15 PM EDT 12.7 5.00 Haze -- 80.6 % NA NA 30.22 1023.4
12:35 PM EDT SW 8.1 5.00 Haze -- 78.6 % NA NA 30.25 1024.1
12:15 PM EDT 10.4 5.00 Haze -- 77.4 % NA NA 30.25 1024.4
11:55 AM EDT 11.4 4.00 Haze -- 76.3 % NA NA 30.26 1024.7
11:35 AM EDT 9.2 3.00 Haze -- 74.3 48.7 40% NA 73.4 30.26 1024.7
11:15 AM EDT 11.5 2.50 NULL -- 72.9 50.2 45% NA 72.0 30.27 1025.1
10:55 AM EDT 11.4 2.50 Haze -- 70.7 50.9 50% NA 69.8 30.27 1025.1
10:35 AM EDT 10.3 2.00 Haze -- 69.6 51.8 53% NA NA 30.27 1025.1
10:15 AM EDT 9.2 3.50 Haze -- NULL 52.2 % NA NA 30.27 1025.1
09:55 AM EDT 10.4 3.50 Haze -- NULL 52.0 % NA NA 30.27 1025.1
09:35 AM EDT SW 8.1 10.00 Mostly Cloudy -- NULL 52.3 % NA NA 30.27 1025.1

Regional Weather Observation

AIKEN (KAIK)

Mostly Cloudy
81.1 F

AUGUSTA/BUSH (KAGS)

Clear
82.4 F

BARNWELL (KBNL)

Clear
82.4 F

NORTH AUX (KXNO)

Partly Cloudy
NULL F

COLUMBIA (KCAE)

Smoke
84.2 F

COLUMBIA-OWENS (KCUB)

Clear
84.2 F
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