Historical weather data, all-time temperature records, and monthly climate averages for Charleston, SC. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Charleston lands right in the sweet spot of spring, with average highs around 70° and lows in the mid-50s. Across 133 years of records, the date has swung wildly — from a scorching 89° in 1978 to a bitter 38° low back in 1899. There's about a 1-in-4 chance of rain today, but snow is essentially off the table.
Charleston's weather has some serious range: the city has baked at 104° (June 1944) and frozen down to 7° (February 1899), a 97-degree spread that reflects its position at the edge of the subtropical South. That same brutal February in 1899 also produced the city's snowiest day on record, 3.2 inches — ancient history by Charleston standards.
Charleston runs warm most of the year, peaking in mid-July with average highs of 88° — and that's also when it's wettest, averaging over 1.5 inches in a single week. If you're looking for the mildest weather, aim for April through May or October, when highs sit in the low-to-mid 70s. January and February are the coolest months, but even then, highs hover near 60°.