Average Weather in April in Charleston South Carolina, United States Daily high temperatures increase by 6°F , from 71°F to 77°F , rarely falling below 62°F or exceeding 84°F . Charleston Weather History for the Previous 24 Hours Show weather for: Previous 24 hours August 12, 2020 August 11, 2020 August 10, 2020 August 9, 2020 August 8, 2020 August 7, 2020 August 6, 2020 August 5, 2020 August 4, 2020 August 3, 2020 August 2, 2020 August 1, 2020 July 31, 2020 July 30, 2020 July 29, 2020 July 28, 2020 Visualize past, present, and future weather from many angles via both static and interactive mapsCurrent and future radar maps for assessing areas of precipitation, type, and intensitySatellite maps for visualizing where there is cloud cover and associated precipitationView live current conditions in and around your areaCurrently active global watches and warnings, lightning, and severe weather riskCoverage of top events from the world’s most trusted name in weatherBreaking news and top weather stories from around the globeListen to behind-the-scenes details on trending weather topicsMeet the talent dedicated to bringing you the most accurate informationVideo coverage of the top weather events people are talking aboutProvides winter weather forecasts and the winter weather outlook for your areaVisit our Corporate Site for more info on AccuWeatherDownload our free award-winning apps for Superior Accuracy™ on the goExplore More, Dive Deeper, Analyze Faster with AccuWeather PremiumSpecialized Weather Centers, More of Everything with AccuWeather ProfessionalLet AccuWeather help you personalize your day-to-day forecasts, to help you better know how to plan your day, and your outdoor activities.Rare 'bolt from the blue' lightning strike caught on truck dash camThe weather seemed tranquil. The lowest chance of overcast or mostly cloudy conditions is 38% on April 29. Evening temperatures are generally close to morning temperatures, sometimes a few degrees to either side depending on the weather that day. A severe squall line moved through southeast South Carolina and northern portions of southeast Georgia during the early morning of April 13, 2020 ahead of a strong cold front.The environment ahead of the squall line was unusually unstable for this time of year (and especially for the time of day) with mixed layer convective available potential energy (MLCAPE) as high as ~2000 J/kg, … Puffy white clouds floated by a splendid blue summer sky. The month of April in North Charleston experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 40% throughout the month. The clearest day of the month is April 29, with clear, mostly clear, or partly cloudy conditions 62% of the time. How warm is the sea around Charleston in April? Low near 75F. Rainfall for the month totals an average of 2.9 inches, with rain occurring on an average of 7-8 days.Most days throughout April in Charleston bring at least some sun: between a third and a half of days this month are sunny all day, with about as many days again bringing a mix of sunny spells and clouds. Meanwhile, face masks will be required in one major U.S. city into 2021.Searing heat wave to swell across West, spark highest temps in 3 yearsA major hot spell will produce temperatures as high as 30 degrees above normal. And one city just over the Canadian border may challenge an all-time August high.AccuWeather Summer Camp: What makes a thunderstorm severe?Lightning has killed an average of 25 people each of the last 10 years in the U.S., but that’s not what makes a thunderstorm severe.New study shows best and worst face masks to guard against coronavirusA team of scientists analyzed more than a dozen of the most commonly-worn mask types and some of the masks, they concluded, are actually worse than wearing no mask at all.Get AccuWeather alerts as they happen with our browser notifications.