Harleyville, SC Weather Forecast & Alerts

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

1 Currently Active Alert for Harleyville

Current Conditions — Harleyville, SC

ORANGEBURG (KOGB)

Clear

75.2 F
Humidity:36%
Wind Speed:S 5.7 mph
Barometer:30.08 in
Dewpoint:46.4 F
Visibility:10.00 mi
Precip:--
Heat Index:74.1 F
Wind Chill:NA
Apr 22 2026, 07:30 PM EDT
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5-Day Forecast — Harleyville, SC

Wednesday

High 84 °F
Forecast Missing
Wednesday
Night
Low 53 °F
Clear
Thursday

High 89 °F
Mostly Sunny
Thursday
Night
Low 57 °F
Mostly Clear
Friday

High 89 °F
Partly Sunny
Friday
Night
Low 59 °F
Mostly Clear
Saturday

High 89 °F
Chance of T-storms
Saturday
Night
Low 60 °F
Chance of T-storms
Sunday

High 82 °F
Chance of T-storms

Detailed Forecast — Harleyville, SC

Wednesday
Sunny. High near 84°F. Wind 5 to 6 mph, with gusts as high as 13 mph.
Wednesday Night
Clear. Low around 53°F. Wind 2 to 5 mph, with gusts as high as 12 mph.
Thursday
Mostly Sunny. High near 89°F. Wind 2 to 5 mph, with gusts as high as 12 mph.
Thursday Night
Mostly Clear. Low around 57°F. Wind 2 to 5 mph, with gusts as high as 13 mph.
Friday
Partly Sunny. High near 89°F. Wind 2 to 6 mph, with gusts as high as 13 mph.
Friday Night
Mostly Clear. Low around 59°F. Wind 3 to 6 mph, with gusts as high as 13 mph.
Saturday
Chance of Thunderstorms. High near 89°F. Wind 2 to 7 mph, with gusts as high as 14 mph.
Saturday Night
Chance of Thunderstorms. Low around 60°F. Wind 2 to 5 mph, with gusts as high as 12 mph.
Sunday
Chance of Thunderstorms. High near 82°F. Wind 2 to 7 mph, with gusts as high as 13 mph.
Sunday Night
Chance of Showers. Low around 57°F. Wind around 3 mph, with gusts as high as 9 mph.
Monday
Chance of Thunderstorms. High near 80°F. Wind 5 to 6 mph, with gusts as high as 13 mph.
Monday Night
Slight Chance of Rain. Low around 59°F. Wind 2 to 3 mph, with gusts as high as 10 mph.
Tuesday
Chance of Thunderstorms. High near 86°F. Wind 3 to 8 mph, with gusts as high as 17 mph.
SC Radar
Current Radar • SC
Day 1 Outlook • April 22, 2026

Observation History — Harleyville, 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)
07:30 PM EDT S 5.7 10.00 Clear -- 75.2 46.4 36% NA 74.1 30.08 1018.6
07:15 PM EDT S 4.6 10.00 Clear -- 78.8 46.4 32% NA 77.9 30.08 1018.6
07:00 PM EDT 9.2 10.00 Clear -- 78.8 44.6 30% NA 77.7 30.08 1018.6
06:40 PM EDT SW 6.9 10.00 Clear -- 80.6 44.6 28% NA 79.7 30.08 1018.6
06:30 PM EDT S 9.2 10.00 Clear -- 80.6 44.6 28% NA 79.7 30.09 1019.0
06:25 PM EDT S 9.2 10.00 Clear -- 80.6 44.6 28% NA 79.7 30.09 1019.0
06:00 PM EDT SW 9.2 10.00 Mostly Clear -- 82.4 42.8 25% NA 80.4 30.09 1019.0
05:50 PM EDT 10.4 10.00 Mostly Clear -- 82.4 42.8 25% NA 80.4 30.09 1019.0
05:35 PM EDT SW 5.7 10.00 Mostly Clear -- 82.4 42.8 25% NA 80.4 30.09 1019.0
05:25 PM EDT SW 9.2 10.00 Clear -- 82.4 42.8 25% NA 80.4 30.09 1019.0
05:15 PM EDT SW 10.4 G 17.3 10.00 Clear -- 82.4 42.8 25% NA 80.4 30.09 1019.0
05:00 PM EDT 6.9 10.00 Clear -- 80.6 42.8 26% NA 79.5 30.10 1019.3
04:40 PM EDT 10.00 Clear -- 82.4 42.8 25% NA 80.4 30.10 1019.3
04:25 PM EDT SW 12.7 10.00 Clear -- 82.4 42.8 25% NA 80.4 30.10 1019.3
04:15 PM EDT 8.1 10.00 Clear -- 82.4 42.8 25% NA 80.4 30.11 1019.6
04:00 PM EDT 9.2 10.00 Clear -- 82.4 % NA NA 30.11 1019.6
03:50 PM EDT 11.5 10.00 Clear -- 82.4 % NA NA 30.12 1020.0
03:35 PM EDT 12.7 G 18.4 10.00 Clear -- 82.4 % NA NA 30.13 1020.3
03:20 PM EDT SW 4.6 10.00 Clear -- 80.6 % NA NA 30.14 1020.7
03:05 PM EDT SW 12.7 10.00 Clear -- 82.4 % NA NA 30.15 1021.0
03:00 PM EDT SW 4.6 10.00 Clear -- 80.6 % NA NA 30.15 1021.0
02:35 PM EDT S 8.1 10.00 Clear -- 80.6 44.6 28% NA 79.7 30.16 1021.3
02:15 PM EDT SW 9.2 10.00 Clear -- 80.6 46.4 30% NA 79.7 30.18 1022.0
02:05 PM EDT 4.6 10.00 Clear -- 80.6 46.4 30% NA 79.7 30.18 1022.0

Regional Weather Observation

ORANGEBURG (KOGB)

Clear
75.2 F

SUMMERVILLE (KDYB)

Clear
75.2 F

MANNING (KMNI)

Clear
77.0 F

MCENTIRE ANG BAS (KMMT)

Clear
84.6 F

BERKELEY MONCKS (KMKS)

Clear
73.4 F

SHAW AFB/SUMTER (KSSC)

Clear
81.3 F
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