{"id":355568,"date":"2026-06-30T10:29:07","date_gmt":"2026-06-30T10:29:07","guid":{"rendered":"https:\/\/www.newsbeep.com\/us-tx\/355568\/"},"modified":"2026-06-30T10:29:07","modified_gmt":"2026-06-30T10:29:07","slug":"heat-dome-is-locked-over-austin-but-how-long-will-it-last","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/us-tx\/355568\/","title":{"rendered":"Heat dome is locked over Austin \u2014 but how long will it last?"},"content":{"rendered":"

The heat dome created<\/a> by the high pressure acts like a pot lid on the atmosphere, suppressing rain chances and keeping warm air trapped closer to the surface. Within the high pressure system, air sinks rather than rises. That sinking air heats up as it compresses, allowing temperatures to climb day after day.<\/p>\n

While we\u2019d love to tap into the cooler air \u2014 and even some of the snow <\/a>\u2014 falling in the Rockies, the high pressure to our east will remain the dominant weather maker through the rest of the week. That means Central Texas can expect hot and dry weather, and hazy skies with Saharan dust continuing to linger overhead.<\/p>\n

Tuesday will begin with mostly cloudy skies, light winds, and morning temperatures a few degrees above the late June average of 74.
By the afternoon, skies will turn mostly sunny with breezy and hot weather. High temperatures will climb to around 95 degrees in Austin, which is near normal for this time of year. Combined with the humidity, however, the air temps will feel more like 98 to 103 degrees across the Hill Country and along the Interstate 35 corridor.<\/p>\n

Winds won\u2019t be as strong as they have been over the past several days, but afternoon and evening gusts could still reach 25 mph, especially around sunset.<\/p>\n

Morning clouds will give way to plenty of sunshine by lunchtime on Wednesday. Winds will continue to blow from the south and southeast but remain light, below 12 mph. Expect another hot day, with morning temperatures in the middle to upper 70s and afternoon temps in the upper 90s. Humidity will make those temps feel more like 100 to 102 degrees.<\/p>\n

While the afternoons might start to feel unbearable, it\u2019s worth putting the heat into perspective. Austin has yet to reach 100 degrees this year, and the hottest temperature so far has been 97 degrees, recorded on March 15 and again on June 18. By this point last year, we\u2019d already experienced two days of triple-digit heat, along with several afternoons that reached 98 and 99 degrees.<\/p>\n

The rest of the week will remain below the 100-degree mark. However, on average, Austin\u2019s first 100-degree day typically occurs on or around the Independence Day holiday.<\/p>\n

Rain chances will be hard to come by this week as high air pressure to the east becomes more firmly established.<\/p>\n

However, Texas will sit along the southwestern edge of the high pressure. Because of\u00a0clockwise air flow around the high pressure, moisture-rich air from the Gulf of Mexico will begin streaming inland later this week, allowing a few coastal streamers, or sea-breeze showers, to develop again in the Coastal Plains east of the Interstate 35 corridor.\u00a0<\/p>\n

While Austin is not expected to see any immediate rainfall, this pattern shift could help bring isolated showers back to the area by early next week. We\u2019re also watching the West Texas\u00a0dry line, which separates dry and humid air masses. That could spark showers and thunderstorms near Big Bend before they start tracking east toward the Hill Country.<\/p>\n","protected":false},"excerpt":{"rendered":"The heat dome created by the high pressure acts like a pot lid on the atmosphere, suppressing rain…\n","protected":false},"author":2,"featured_media":355569,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[132,134,133],"class_list":["post-355568","post","type-post","status-publish","format-standard","has-post-thumbnail","category-austin","tag-austin","tag-austin-headlines","tag-austin-news"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us-tx\/wp-json\/wp\/v2\/posts\/355568","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us-tx\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us-tx\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-tx\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-tx\/wp-json\/wp\/v2\/comments?post=355568"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us-tx\/wp-json\/wp\/v2\/posts\/355568\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-tx\/wp-json\/wp\/v2\/media\/355569"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us-tx\/wp-json\/wp\/v2\/media?parent=355568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-tx\/wp-json\/wp\/v2\/categories?post=355568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-tx\/wp-json\/wp\/v2\/tags?post=355568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}