{"id":4604,"date":"2025-06-21T12:51:20","date_gmt":"2025-06-21T16:51:20","guid":{"rendered":"https:\/\/us.weatheramerica.com\/?p=4604"},"modified":"2025-06-27T04:14:13","modified_gmt":"2025-06-27T08:14:13","slug":"weather-south-carolina-extreme-heat-wave-to-hit-upstate","status":"publish","type":"post","link":"https:\/\/weatheramerica.com\/us\/2025\/06\/21\/weather-south-carolina-extreme-heat-wave-to-hit-upstate\/","title":{"rendered":"Weather South Carolina: Extreme heat wave to hit Upstate"},"content":{"rendered":"<p data-start=\"64\" data-end=\"402\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4608\" src=\"http:\/\/us.weatheramerica.com\/wp-content\/uploads\/sites\/2\/2025\/06\/Weather-South-Carolina-Extreme-heat-wave-to-hit-Upstate.jpg\" alt=\"\" width=\"1536\" height=\"1024\" srcset=\"https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/06\/Weather-South-Carolina-Extreme-heat-wave-to-hit-Upstate.jpg 1536w, https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/06\/Weather-South-Carolina-Extreme-heat-wave-to-hit-Upstate-768x512.jpg 768w, https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/06\/Weather-South-Carolina-Extreme-heat-wave-to-hit-Upstate-330x220.jpg 330w, https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/06\/Weather-South-Carolina-Extreme-heat-wave-to-hit-Upstate-420x280.jpg 420w, https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/06\/Weather-South-Carolina-Extreme-heat-wave-to-hit-Upstate-615x410.jpg 615w, https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/06\/Weather-South-Carolina-Extreme-heat-wave-to-hit-Upstate-860x573.jpg 860w, https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/06\/Weather-South-Carolina-Extreme-heat-wave-to-hit-Upstate-219x146.jpg 219w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/p>\n<p data-start=\"64\" data-end=\"402\"><strong data-start=\"64\" data-end=\"92\">Hot and humid conditions<\/strong> are on the horizon for <strong data-start=\"116\" data-end=\"144\">South Carolina&#8217;s Upstate<\/strong>, with <strong data-start=\"151\" data-end=\"189\">temperatures expected to skyrocket<\/strong> starting early next week. A <strong data-start=\"218\" data-end=\"241\">dangerous heat wave<\/strong> will settle over the region, <strong data-start=\"271\" data-end=\"329\">pushing highs into the upper 90s Fahrenheit (35\u201337 \u00b0C)<\/strong> and beyond, particularly in areas <strong data-start=\"364\" data-end=\"401\">east of the Appalachian Mountains<\/strong>.<\/p>\n<h2 data-start=\"404\" data-end=\"459\"><strong data-start=\"407\" data-end=\"459\">How hot will it get in South Carolina next week?<\/strong><\/h2>\n<p data-start=\"461\" data-end=\"956\">By <strong data-start=\"464\" data-end=\"475\">Tuesday<\/strong>, forecasts from the <strong data-start=\"496\" data-end=\"556\">National Weather Service in Greenville-Spartanburg (GSP)<\/strong> anticipate temperatures <strong data-start=\"581\" data-end=\"609\">soaring to 99\u00b0F (37.2\u00b0C)<\/strong> across the <strong data-start=\"621\" data-end=\"632\">Upstate<\/strong>, with the heat <strong data-start=\"648\" data-end=\"693\">intensifying further due to high humidity<\/strong>. This will drive <strong data-start=\"711\" data-end=\"732\">heat index values<\/strong> \u2014 the &#8220;feels like&#8221; temperature \u2014 into the <strong data-start=\"775\" data-end=\"812\">upper 90s and low 100s (37\u201339 \u00b0C)<\/strong> range. <strong data-start=\"820\" data-end=\"845\">Tuesday and Wednesday<\/strong> are likely to be the <strong data-start=\"867\" data-end=\"890\">most dangerous days<\/strong>, with some areas potentially reaching <strong data-start=\"929\" data-end=\"955\">Heat Advisory criteria<\/strong>.<\/p>\n<p data-start=\"958\" data-end=\"1175\">This <strong data-start=\"963\" data-end=\"982\">oppressive heat<\/strong> will be widespread, impacting not just <strong data-start=\"1022\" data-end=\"1040\">South Carolina<\/strong>, but also <strong data-start=\"1051\" data-end=\"1072\">northeast Georgia<\/strong>, the <strong data-start=\"1078\" data-end=\"1105\">North Carolina Piedmont<\/strong>, the <strong data-start=\"1111\" data-end=\"1124\">Foothills<\/strong>, and <strong data-start=\"1130\" data-end=\"1174\">portions of the North Carolina mountains<\/strong>.<\/p>\n<h2 data-start=\"1177\" data-end=\"1228\"><strong data-start=\"1180\" data-end=\"1228\">What is a heat wave, and why does it matter?<\/strong><\/h2>\n<p data-start=\"1230\" data-end=\"1611\">According to the <strong data-start=\"1247\" data-end=\"1275\">National Weather Service<\/strong>, a <strong data-start=\"1279\" data-end=\"1292\">heat wave<\/strong> is defined as a <strong data-start=\"1309\" data-end=\"1361\">prolonged period of abnormally high temperatures<\/strong>, usually <strong data-start=\"1371\" data-end=\"1401\">lasting more than two days<\/strong>, and sometimes occurring with <strong data-start=\"1432\" data-end=\"1449\">high humidity<\/strong>. These events can span <strong data-start=\"1473\" data-end=\"1501\">large geographical areas<\/strong>, placing <strong data-start=\"1511\" data-end=\"1531\">millions at risk<\/strong> for <strong data-start=\"1536\" data-end=\"1562\">heat-related illnesses<\/strong> such as <strong data-start=\"1571\" data-end=\"1590\">heat exhaustion<\/strong> and <strong data-start=\"1595\" data-end=\"1610\">heat stroke<\/strong>.<\/p>\n<h2 data-start=\"1613\" data-end=\"1674\"><strong data-start=\"1616\" data-end=\"1674\">Official weather outlook warns of dangerous conditions<\/strong><\/h2>\n<p data-start=\"1676\" data-end=\"1738\">The latest <strong data-start=\"1687\" data-end=\"1716\">hazardous weather outlook<\/strong> warns residents that:<\/p>\n<blockquote data-start=\"1740\" data-end=\"2076\">\n<p data-start=\"1742\" data-end=\"2076\">&#8220;<strong data-start=\"1743\" data-end=\"2075\">A heatwave will develop next week bringing hot and humid conditions. Highs each afternoon will climb into the mid to upper 90s with heat indices ranging from the upper 90s to lower 100s. Locations east of the mountains could see heat indices approach or reach Heat Advisory Criteria on Tuesday afternoon and Wednesday afternoon.<\/strong>&#8220;<\/p>\n<p data-start=\"1742\" data-end=\"2076\">\n<\/blockquote>\n<h2 data-start=\"2078\" data-end=\"2131\"><strong data-start=\"2081\" data-end=\"2131\">7-day forecast for Greenville-Spartanburg area<\/strong><\/h2>\n<p data-start=\"2133\" data-end=\"2313\"><strong data-start=\"2133\" data-end=\"2153\">Friday afternoon<\/strong> will be <strong data-start=\"2162\" data-end=\"2171\">sunny<\/strong>, with highs near <strong data-start=\"2189\" data-end=\"2206\">90\u00b0F (32.2\u00b0C)<\/strong> and light <strong data-start=\"2217\" data-end=\"2241\">east-southeast winds<\/strong>. The night will be <strong data-start=\"2261\" data-end=\"2277\">mostly clear<\/strong> with lows around <strong data-start=\"2295\" data-end=\"2312\">70\u00b0F (21.1\u00b0C)<\/strong>.<\/p>\n<p data-start=\"2315\" data-end=\"2460\"><strong data-start=\"2315\" data-end=\"2327\">Saturday<\/strong> will see the mercury rise to <strong data-start=\"2357\" data-end=\"2374\">92\u00b0F (33.3\u00b0C)<\/strong> under <strong data-start=\"2381\" data-end=\"2396\">clear skies<\/strong>, followed by a <strong data-start=\"2412\" data-end=\"2426\">mild night<\/strong> with lows near <strong data-start=\"2442\" data-end=\"2459\">71\u00b0F (21.7\u00b0C)<\/strong>.<\/p>\n<p data-start=\"2462\" data-end=\"2613\"><strong data-start=\"2462\" data-end=\"2472\">Sunday<\/strong> temperatures will peak around <strong data-start=\"2503\" data-end=\"2520\">94\u00b0F (34.4\u00b0C)<\/strong> with continued <strong data-start=\"2536\" data-end=\"2556\">sunny conditions<\/strong> and light winds, dipping to <strong data-start=\"2585\" data-end=\"2602\">73\u00b0F (22.8\u00b0C)<\/strong> overnight.<\/p>\n<p data-start=\"2615\" data-end=\"2865\">By <strong data-start=\"2618\" data-end=\"2628\">Monday<\/strong>, conditions will turn <strong data-start=\"2651\" data-end=\"2670\">hot and intense<\/strong>, with <strong data-start=\"2677\" data-end=\"2705\">highs near 97\u00b0F (36.1\u00b0C)<\/strong>, setting the stage for <strong data-start=\"2729\" data-end=\"2747\">Tuesday\u2019s peak<\/strong> of <strong data-start=\"2751\" data-end=\"2768\">99\u00b0F (37.2\u00b0C)<\/strong>. Nights remain <strong data-start=\"2784\" data-end=\"2802\">clear and warm<\/strong>, with <strong data-start=\"2809\" data-end=\"2833\">low 70s\u00b0F (21\u201323 \u00b0C)<\/strong> expected through <strong data-start=\"2851\" data-end=\"2864\">Wednesday<\/strong>.<\/p>\n<p data-start=\"2867\" data-end=\"3042\"><strong data-start=\"2867\" data-end=\"2893\">Wednesday and Thursday<\/strong> will both see <strong data-start=\"2908\" data-end=\"2923\">blazing sun<\/strong> and highs again near <strong data-start=\"2945\" data-end=\"2962\">97\u00b0F (36.1\u00b0C)<\/strong>, with <strong data-start=\"2969\" data-end=\"3000\">humidity remaining elevated<\/strong>, making the heat feel even more stifling.<\/p>\n<h2 data-start=\"3044\" data-end=\"3091\"><strong data-start=\"3047\" data-end=\"3091\">Outlook for heat-related health concerns<\/strong><\/h2>\n<p data-start=\"3093\" data-end=\"3264\"><strong data-start=\"3093\" data-end=\"3108\">Doug Outlaw<\/strong>, meteorologist with the <strong data-start=\"3133\" data-end=\"3168\">National Weather Service at GSP<\/strong>, emphasizes the <strong data-start=\"3185\" data-end=\"3212\">importance of hydration<\/strong> and <strong data-start=\"3217\" data-end=\"3238\">cool environments<\/strong> during this heat episode:<\/p>\n<blockquote data-start=\"3266\" data-end=\"3510\">\n<p data-start=\"3268\" data-end=\"3510\">&#8220;<strong data-start=\"3269\" data-end=\"3509\">Certainly keep hydrated. Drink water and make sure you&#8217;ve got some water available to drink if you&#8217;re going to be outside in the heat, and if at all possible, take breaks and come into an air conditioned building for a time to cool off.<\/strong>&#8220;<\/p>\n<\/blockquote>\n<p data-start=\"3512\" data-end=\"3794\">He also underscores the <strong data-start=\"3536\" data-end=\"3614\">critical need to check on older adults, those with health issues, and pets<\/strong>, who are especially <strong data-start=\"3635\" data-end=\"3662\">vulnerable to high heat<\/strong>. <strong data-start=\"3664\" data-end=\"3699\">Never leave children or animals<\/strong> in parked cars, even for short periods, as <strong data-start=\"3743\" data-end=\"3793\">temperatures can rise quickly to lethal levels<\/strong>.<\/p>\n<p data-start=\"3796\" data-end=\"3900\" data-is-last-node=\"\" data-is-only-node=\"\"><strong data-start=\"3796\" data-end=\"3834\">Loose-fitting, breathable clothing<\/strong> is recommended to help the body cope with the <strong data-start=\"3881\" data-end=\"3899\">excessive heat<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hot and humid conditions are on the horizon for South Carolina&#8217;s Upstate, with temperatures expected to skyrocket starting early next week. A dangerous heat wave will settle over the region, pushing highs into the upper 90s Fahrenheit (35\u201337 \u00b0C) and beyond, particularly in areas east of the Appalachian Mountains. How hot will it get in [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":4608,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4604","post","type-post","status-publish","format-standard","has-post-thumbnail","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Weather South Carolina: Extreme heat wave to hit Upstate - United States - Weather America<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/weatheramerica.com\/us\/2025\/06\/21\/weather-south-carolina-extreme-heat-wave-to-hit-upstate\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Weather South Carolina: Extreme heat wave to hit Upstate - United States - Weather America\" \/>\n<meta property=\"og:description\" content=\"Hot and humid conditions are on the horizon for South Carolina&#8217;s Upstate, with temperatures expected to skyrocket starting early next week. A dangerous heat wave will settle over the region, pushing highs into the upper 90s Fahrenheit (35\u201337 \u00b0C) and beyond, particularly in areas east of the Appalachian Mountains. 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A dangerous heat wave will settle over the region, pushing highs into the upper 90s Fahrenheit (35\u201337 \u00b0C) and beyond, particularly in areas east of the Appalachian Mountains. 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