{"id":3043,"date":"2025-05-27T06:52:00","date_gmt":"2025-05-27T10:52:00","guid":{"rendered":"https:\/\/us.weatheramerica.com\/?p=3043"},"modified":"2025-06-27T04:15:23","modified_gmt":"2025-06-27T08:15:23","slug":"weather-alert-bay-area-heat-wave-brings-90s-by-friday","status":"publish","type":"post","link":"https:\/\/weatheramerica.com\/us\/2025\/05\/27\/weather-alert-bay-area-heat-wave-brings-90s-by-friday\/","title":{"rendered":"Weather alert: Bay Area heat wave brings 90s by Friday"},"content":{"rendered":"<p><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3044\" src=\"http:\/\/us.weatheramerica.com\/wp-content\/uploads\/sites\/2\/2025\/05\/hot-in-California_2705-2.jpg\" alt=\"\" width=\"2080\" height=\"1441\" srcset=\"https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/05\/hot-in-California_2705-2.jpg 2080w, https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/05\/hot-in-California_2705-2-768x532.jpg 768w, https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/05\/hot-in-California_2705-2-1536x1064.jpg 1536w, https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/05\/hot-in-California_2705-2-2048x1419.jpg 2048w, https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/05\/hot-in-California_2705-2-860x596.jpg 860w, https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/05\/hot-in-California_2705-2-211x146.jpg 211w\" sizes=\"auto, (max-width: 2080px) 100vw, 2080px\" \/><\/p>\n<p><strong>A significant warming trend unfolds across Northern California<\/strong><\/p>\n<p>A <strong>notable shift in temperature<\/strong> is forecast this week across <strong>the Bay Area<\/strong>, with <strong>daytime highs expected to spike into the 90s<\/strong> \u00b0F (<strong>32\u201337 \u00b0C<\/strong>) by <strong>Friday<\/strong>, especially in <strong>inland areas<\/strong> like <strong>Livermore<\/strong>, <strong>Concord<\/strong>, and <strong>Antioch<\/strong>. This early-season heat wave is shaping up as a <strong>preview of summer<\/strong>, which officially begins on <strong>June 20<\/strong>.<\/p>\n<p><strong>Midweek build-up: gradual rise into the 80s<\/strong><\/p>\n<p>According to <strong>KRON4 Meteorologist Gayle Ong<\/strong>, the <strong>warming trend<\/strong> will begin to assert itself by <strong>midweek<\/strong>. Inland communities may see <strong>temperatures in the mid-80s<\/strong> \u00b0F (<strong>29\u201330 \u00b0C<\/strong>) as early as <strong>Thursday<\/strong>, with the <strong>warmest conditions expected Friday and Saturday<\/strong>. While Ong noted that <strong>forecast confidence decreases<\/strong> slightly that far out, she emphasized a <strong>high probability<\/strong> for <strong>above-average temperatures<\/strong> to take hold across the interior.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Heat concentrations in the East Bay<\/strong><\/p>\n<p>Friday is shaping up to be the <strong>hottest day<\/strong> of the stretch. <strong>Interior East Bay cities<\/strong> such as <strong>Livermore<\/strong>, <strong>Concord<\/strong>, and <strong>Antioch<\/strong> could register <strong>mid-to-upper 90s<\/strong> \u00b0F (<strong>35\u201336 \u00b0C<\/strong>). Elsewhere across the <strong>Bay Area<\/strong>, communities closer to the <strong>Bay and Peninsula<\/strong> can anticipate <strong>upper 70s to low 80s<\/strong> \u00b0F (<strong>25\u201328 \u00b0C<\/strong>), while <strong>coastal locations<\/strong> like <strong>Half Moon Bay<\/strong> and <strong>Pacifica<\/strong> are likely to remain <strong>mild in the 60s<\/strong> \u00b0F (<strong>16\u201320 \u00b0C<\/strong>).<\/p>\n<p>&nbsp;<\/p>\n<p><strong>National Weather Service flags moderate heat risk<\/strong><\/p>\n<p>The <strong>National Weather Service (NWS)<\/strong> has issued a heads-up for a <strong>moderate heat risk<\/strong> across <strong>interior regions<\/strong> toward the <strong>end of the week<\/strong>. Their advisory urges residents to <strong>stay hydrated<\/strong>, <strong>minimize sun exposure<\/strong>, and most importantly, <strong>never leave people or pets unattended in vehicles<\/strong>\u2014a danger that increases sharply as <strong>car interiors heat rapidly under the sun<\/strong>.<\/p>\n<p>As <strong>summer&#8217;s arrival draws closer<\/strong>, the region is already <strong>feeling the intensity<\/strong> of seasonal transitions. With <strong>temperatures on the rise<\/strong>, the <strong>Bay Area\u2019s microclimates<\/strong> will again be on full display, highlighting the <strong>stark contrasts<\/strong> between <strong>coastal coolness<\/strong> and <strong>interior heat<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A significant warming trend unfolds across Northern California A notable shift in temperature is forecast this week across the Bay Area, with daytime highs expected to spike into the 90s \u00b0F (32\u201337 \u00b0C) by Friday, especially in inland areas like Livermore, Concord, and Antioch. This early-season heat wave is shaping up as a preview of [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":3044,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3043","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 alert: Bay Area heat wave brings 90s by Friday - 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\/05\/27\/weather-alert-bay-area-heat-wave-brings-90s-by-friday\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Weather alert: Bay Area heat wave brings 90s by Friday - United States - Weather America\" \/>\n<meta property=\"og:description\" content=\"A significant warming trend unfolds across Northern California A notable shift in temperature is forecast this week across the Bay Area, with daytime highs expected to spike into the 90s \u00b0F (32\u201337 \u00b0C) by Friday, especially in inland areas like Livermore, Concord, and Antioch. 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This early-season heat wave is shaping up as a preview of [&hellip;]","og_url":"https:\/\/weatheramerica.com\/us\/2025\/05\/27\/weather-alert-bay-area-heat-wave-brings-90s-by-friday\/","og_site_name":"United States - Weather America","article_published_time":"2025-05-27T10:52:00+00:00","article_modified_time":"2025-06-27T08:15:23+00:00","og_image":[{"width":2080,"height":1441,"url":"https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/05\/hot-in-California_2705-2.jpg","type":"image\/jpeg"}],"author":"Noah Williams","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Noah Williams","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/weatheramerica.com\/us\/2025\/05\/27\/weather-alert-bay-area-heat-wave-brings-90s-by-friday\/#article","isPartOf":{"@id":"https:\/\/weatheramerica.com\/us\/2025\/05\/27\/weather-alert-bay-area-heat-wave-brings-90s-by-friday\/"},"author":{"name":"Noah Williams","@id":"https:\/\/weatheramerica.com\/us\/#\/schema\/person\/c808bf418bd53f12f696edc5ba743beb"},"headline":"Weather alert: Bay Area heat wave brings 90s by Friday","datePublished":"2025-05-27T10:52:00+00:00","dateModified":"2025-06-27T08:15:23+00:00","mainEntityOfPage":{"@id":"https:\/\/weatheramerica.com\/us\/2025\/05\/27\/weather-alert-bay-area-heat-wave-brings-90s-by-friday\/"},"wordCount":323,"commentCount":0,"image":{"@id":"https:\/\/weatheramerica.com\/us\/2025\/05\/27\/weather-alert-bay-area-heat-wave-brings-90s-by-friday\/#primaryimage"},"thumbnailUrl":"https:\/\/weatheramerica.com\/us\/wp-content\/uploads\/sites\/2\/2025\/05\/hot-in-California_2705-2.jpg","articleSection":["News"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/weatheramerica.com\/us\/2025\/05\/27\/weather-alert-bay-area-heat-wave-brings-90s-by-friday\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/weatheramerica.com\/us\/2025\/05\/27\/weather-alert-bay-area-heat-wave-brings-90s-by-friday\/","url":"https:\/\/weatheramerica.com\/us\/2025\/05\/27\/weather-alert-bay-area-heat-wave-brings-90s-by-friday\/","name":"Weather alert: Bay Area heat wave brings 90s by Friday - 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