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Austin temperatures will likely be in the lower 90s by 4 p.m. Sunday, according to the National Blend of Models, a composite weather forecast model.<\/p>\n
National Blend of Models\/Pivotal Weather<\/p>\n
Expect more sunshine and more above-normal October heat<\/a> Sunday in Austin, according to the National Weather Service. But forecasters added that a return of southerly winds off the Gulf Coast will lead to more humidity and higher heat index values as we head into the work week.<\/p>\n The next seven days also include the welcome reappearance of rain chances. Here\u2019s what the weather service is looking at this week:<\/p>\n Article continues below this ad<\/p>\n What\u2019s the Sunday forecast?<\/p>\n Austin on Sunday is shaping up to be sunny but breezy<\/a> with robust south winds of 5 to 10 mph and gusts as strong as 25 mph. Daytime temperatures could climb to 93 degrees, which would be nearly 10 degrees warmer than normal for Oct. 11, according to weather service data<\/a>. More clouds are expected to roll in Sunday night, when temps will bottom out around 73 degrees before sunrise Monday.<\/p>\n Hot weather has been the defining feature of the weekend<\/a>, thanks to a ridge of high atmospheric pressure, but the return of southeasterly winds will also pull moisture-rich air from the Gulf of Mexico into Central Texas, and increase humidity levels in the coming days.<\/p>\n Article continues below this ad<\/p>\n \u201cWhile this subtle\u00a0change will not be highly noticeable over the weekend, it\u00a0introduces a shifting trend for the days to follow,\u201d the weather service said in a forecast bulletin<\/a> Saturday. \u201cThese changes\u00a0include a loss of mild overnight temperatures alongside an\u00a0increase in daytime humidity, minimum temperatures, and heat\u00a0indices.\u201d<\/p>\n What\u2019s Monday\u2019s forecast?<\/p>\n \u201cThe early risers on Monday morning will wake up to higher\u00a0humidity and warmer morning lows,\u201d forecasters said in Saturday\u2019s bulletin. \u201cWe will look to start the\u00a0work week returning to those uncomfortable heat index days typical\u00a0of September.\u201d<\/p>\n Article continues below this ad<\/p>\n Austin on Monday has a 20% chance of afternoon rain<\/a> on an otherwise partly sunny day. Like Sunday, temperatures should peak at 93 degrees amid persistent gusty southerly winds. Nighttime humidity will help keep temperatures above 76 degrees overnight until dawn Tuesday.<\/p>\n Tuesday in Austin, though, will be mostly sunny as temperatures climb to as high as 95 degrees. South winds continue to blow at 5 to 10 mph, with gusts as strong as 20 mph. Tuesday night temperatures, amid mostly clear skies, are expected to stay above a balmy 77 degrees.<\/p>\n Will Simon affect Texas at all?<\/p>\n While \u201cstrong Hurricane Simon in the eastern Pacific is forecast to crash into the rugged terrain of southern Mexico Sunday or Sunday night,\u201d the weather service said,\u00a0other weather features also are in play.<\/p>\n Article continues below this ad<\/p>\n An upper-level trough of low air pressure is moving into the western United States and will nudge the ridge of high pressure to the east, forecasters said. This will allow a cold front to approach South-Central Texas late next week.<\/p>\n The GFS weather model, sometimes referred to as the American model, shows a possible cold front moving through Texas by 1 p.m. Friday, with a 20-degree difference in temperatures on either side of the front.<\/p>\n GFS forecast model\/Pivotal Weather<\/p>\n \u201cMeanwhile, tropical moisture pooling over the western Gulf will\u00a0wrap around the western periphery of the subtropical ridge, which\u00a0continues to provide relentless heat over our region,\u201d the weather service said<\/a>.<\/p>\n As this weather pattern holds through Wednesday, Texas will have enough atmospheric moisture for daytime heating to trigger isolated showers along and east of the Interstate 35 corridor.<\/p>\n Article continues below this ad<\/p>\n \u201cBut it doesn\u2019t appear to be getting any significant boost from the remnants of Simon,\u201d forecasters added.<\/p>\n The GFS weather forecast model, sometimes called the American model, shows that the Austin area could receive as much as a half-inch of cumulative rainfall by 1 p.m. Friday.<\/p>\n GFS forecast model\/Pivotal Weather<\/p>\n Weather pattern shift starts Wednesday<\/p>\n Austin on Wednesday should be partly sunny and breezy, with afternoon temps expected to hit 95 degrees again.<\/p>\n Article continues below this ad<\/p>\n<\/p>\n
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