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Shown is the expected mid-atmospheric weather pattern by late Tuesday and early Wednesday, as high pressure develops over Texas.<\/p>\n
Pivotal Weather<\/p>\n
This week, a strong area of high pressure \u2014 often referred to as a heat dome<\/a> \u2014 will settle over Texas.<\/p>\n High-pressure systems cause air to sink through the atmosphere. As the air sinks, it compresses and warms, raising temperatures at the surface. The high pressure also acts like a \u201clid\u201d preventing the hot air from rising, cooling, or dissipating.<\/p>\n Article continues below this ad<\/p>\n The result? Much of the state will experience several days of hot, humid and rain-free conditions over the next week, with some areas across Texas likely to reach the triple digits. How hot will temperatures rise in San Antonio? Here\u2019s what you can expect.<\/p>\n Sunday\u2019s forecast<\/p>\n Mild and muggy conditions are expected early Sunday, as temperatures across South Texas likely hover in the mid- to upper 70s though 9 a.m. Cloudy skies are expected early on, but the afternoon will see some clearing, allowing for partly to mostly sunny skies to return.<\/p>\n Temperatures will rise steadily, reaching about 90 degrees by 1 p.m. before highs top out at around 94 degrees<\/a> by the late afternoon. Humidity levels will stay very high, resulting in \u201cfeels-like\u201d temperatures up to 102 degrees.<\/p>\n Article continues below this ad<\/p>\n Heat index values are likely to rise to between 100 and 102 degrees late Sunday afternoon.<\/p>\n Pivotal Weather<\/p>\n<\/p>\n
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