Charleston, SC

NWS NDFD forecast high temperature for Charleston.

Every year's high on Jul 17 at Charleston. The forecast line shows where today lands; the ringed bar is the hottest on record.

The hottest and coldest ever recorded at Charleston in each calendar month, and for the whole 1937–2026 record — with the year each was set.

Records set or tied at Charleston so far this year — through Jul 11.

Normal high & low by month, from Charleston's own 1991–2020 record. Today's normal high: 92°F · forecast is +4° vs normal.

Charleston's observed daily high for the last six weeks — a white ring marks any day that broke or tied its daily record for that date.

Every day this year against Charleston's own record — the record high, the normal, and the full span ever seen. A shareable look at where the year stands.

Each cell is one day's high at Charleston, coloured by temperature — 90 years of record, so heat waves read as warm streaks and cold snaps as blue.

How many days a year hit a given high at Charleston — counted through Jul 17 each year, so you can see whether 2026 is running hot. Pick a threshold:

35 days ≥90°F so far in 2026 — tied for the 12th most in 90 years. Normal for this point: 24. Record: 51 in 2011.

A ready-to-share summary of Charleston's outlook — post it, or link this page.