Tomorrow Hourly Weather Forecast for Charleston, SC

Hourly Weather | Tomorrow › Wednesday, March 18, 2026

Active Weather Warnings

Freeze Warning

Charleston, South Carolina

12 AM

46°

Feels Like 43°

Humidity: 47%

UV Index: 0

Wind: 7 mph

1 AM

45°

Feels Like 39°

Humidity: 51%

UV Index: 0

Wind: 7 mph

2 AM

43°

Feels Like 39°

Humidity: 53%

UV Index: 0

Wind: 7 mph

3 AM

43°

Feels Like 39°

Humidity: 55%

UV Index: 0

Wind: 7 mph

4 AM

41°

Feels Like 37°

Humidity: 55%

UV Index: 0

Wind: 7 mph

5 AM

39°

Feels Like 37°

Humidity: 56%

UV Index: 0

Wind: 7 mph

6 AM

39°

Feels Like 36°

Humidity: 57%

UV Index: 0

Wind: 7 mph

7 AM

39°

Feels Like 36°

Humidity: 57%

UV Index: 0

Wind: 6 mph

8 AM

39°

Feels Like 37°

Humidity: 53%

UV Index: 1

Wind: 7 mph

9 AM

43°

Feels Like 43°

Humidity: 49%

UV Index: 2

Wind: 7 mph

10 AM

46°

Feels Like 48°

Humidity: 46%

UV Index: 3

Wind: 8 mph

11 AM

48°

Feels Like 52°

Humidity: 45%

UV Index: 4

Wind: 8 mph

12 PM

52°

Feels Like 57°

Humidity: 43%

UV Index: 6

Wind: 8 mph

1 PM

54°

Feels Like 61°

Humidity: 42%

UV Index: 7

Wind: 8 mph

2 PM

55°

Feels Like 61°

Humidity: 43%

UV Index: 6

Wind: 8 mph

3 PM

57°

Feels Like 61°

Humidity: 41%

UV Index: 4

Wind: 8 mph

4 PM

55°

Feels Like 57°

Humidity: 43%

UV Index: 3

Wind: 8 mph

5 PM

55°

Feels Like 55°

Humidity: 45%

UV Index: 2

Wind: 8 mph

6 PM

55°

Feels Like 54°

Humidity: 45%

UV Index: 1

Wind: 7 mph

7 PM

54°

Feels Like 52°

Humidity: 48%

UV Index: 0

Wind: 7 mph

8 PM

52°

Feels Like 50°

Humidity: 52%

UV Index: 0

Wind: 6 mph

9 PM

50°

Feels Like 48°

Humidity: 56%

UV Index: 0

Wind: 6 mph

10 PM

48°

Feels Like 46°

Humidity: 60%

UV Index: 0

Wind: 6 mph

11 PM

48°

Feels Like 46°

Humidity: 61%

UV Index: 0

Wind: 5 mph

Weather Alerts and Warnings for Charleston

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.

+ Read More

Take steps now to protect tender plants from the cold.

Updated: Mar 17, 2:32 AM Source: NWS Alert

Weather Alerts and Warnings for Charleston

Freeze Warning

Explore U.S. Weather Trends