Charleston, South Carolina Weather:
Active Weather Warnings
Wednesday, March 18, 2026
Sunny Weather
Day 57°
Night 37°
Precipitation 11 %
Wind 8 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (March 18, 2025)
Sunny Weather

Day

66°

Night

46°

Wind

7 mph

UV Index

6

Precipitation

0 %

Weather Alerts and Warnings for

Moderate Expected Likely

Freeze Warning

Freeze Warning issued March 17 at 1:38AM EDT until March 18 at 10:00AM EDT by NWS Charleston SC
Mar 18, 12:00 AM Mar 18, 10:00 AM
WHAT: Sub-freezing temperatures as low as 30 expected.

WHERE: Portions of southeast Georgia and southeast South Carolina.

WHEN: From midnight tonight to 10 AM EDT Wednesday.

IMPACTS: Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
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Take steps now to protect tender plants from the cold.
Updated: Mar 17, 2:32 AM Source: NWS Alert