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Austin Turns Into Oven: 103 Degrees Kicks Off Sweltering Week

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Published on August 03, 2026
Austin Turns Into Oven: 103 Degrees Kicks Off Sweltering WeekSource: City of Austin

Austin is starting Monday clear and calm at about 75 degrees, but the easygoing morning will give way to another round of dangerous summer heat. Temperatures are expected to climb rapidly, reaching about 103 degrees this afternoon with a heat index near 104.

The National Weather Service calls Monday the hottest day of the week for the Austin area as drier air and abundant sunshine help temperatures surge. Winds should stay light, generally from the south and southeast at 5 to 10 mph.

Triple-Digit Heat Hangs Around

Tuesday will still be sunny and hot, with a high near 100 and a heat index again reaching about 104. Wednesday could be slightly hotter at 101, followed by highs near 99 Thursday and around 98 from Friday through Sunday.

Overnight relief will be limited, with lows in the mid to upper 70s through the weekend. The forecast discussion notes that humidity will gradually return after Monday, bringing back the more familiar August combination of heat and moisture.

Rain Mostly Misses The Forecast

Austin has virtually no rain chance through Wednesday, with only a 2% chance Thursday and single-digit chances from Friday through Sunday. Skies should remain mostly sunny, while light southerly winds continue through the week.

Plan Outdoor Time Carefully

Residents planning to work or exercise outside should aim for the cooler morning or evening hours, take frequent water breaks and avoid leaving children or pets in parked vehicles. The City of Austin heat guidance also points residents toward cooling-center information and signs of heat-related illness.

No watches, warnings or advisories are listed for the Austin forecast area at this time, but the combination of triple-digit temperatures and warm nights can still put extra stress on people without reliable access to cooling.

Austin-Weather & Environment