Historical weather data, all-time temperature records, and monthly climate averages for North Charleston, SC. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
Today's date has some weather history behind it in North Charleston, where the all-time record books stretch back to 1945. This coastal South Carolina city sits in a climate zone where any given day can surprise you, with an 82-degree swing separating the all-time high of 102° and the all-time low of 20°.
North Charleston's weather extremes tell the story of a place that rarely plays it safe. The all-time high of 102° hit on June 28, 1978, while the coldest day on record bottomed out at 20° in January 1977 — and the city once picked up 6.5 inches of snow in a single February day back in 1973, which remains the snowiest day in recorded history here.
North Charleston runs hot and humid from late spring through early fall, with July highs averaging 89° and that same week logging the most rainfall of the year at 1.59 inches. If you're looking for the mildest conditions, aim for April (avg high 75°) or October (74°) — spring and fall offer the most comfortable window before the summer heat and humidity take over. January and February are the coolest months, with highs only reaching the upper 50s to low 60s.