Austin/ Weather & Environment

Austin Sizzles Through Another 100-Degree Weekend as Rain Ducks the Forecast

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Published on September 18, 2026
Austin Sizzles Through Another 100-Degree Weekend as Rain Ducks the ForecastSource: Google Street View

Austin is starting Friday with clear skies, calm winds and temperatures in the mid-70s, but the brief morning comfort will disappear quickly. The forecast calls for sunny skies, a high near 100 degrees and a heat index around 104, with light east winds offering little relief.

Triple-Digit Heat Holds Through Next Week

Saturday will be sunny with a high near 99 and a heat index as high as 103. Sunday and Monday are expected to reach 100 degrees, followed by highs near 99 Tuesday and Wednesday and 98 Thursday.

Overnight lows will stay in the mid-70s to upper 70s, so the city will not get much recovery after sunset. The latest outlook extends the hot, mostly dry pattern described in Hoodline’s earlier forecast through the middle of next week.

Rain Chances Remain Mostly Low

Friday through Sunday should remain dry across Austin, while Monday afternoon brings only a slight chance of showers or thunderstorms. The National Weather Service Austin/San Antonio office says rain chances will stay limited, with mostly sunny skies returning Wednesday and Thursday, according to its latest forecast discussion.

Plan Outdoor Time Around The Heat

The hottest stretch will arrive during the afternoon and early evening, when temperatures climb toward the upper 90s and 100 degrees. Outdoor work, exercise and errands are safer earlier or later in the day; drink water regularly, use shade and keep an eye on children and pets.

No watches, warnings or advisories are listed for the Austin area in the current report, but the persistent heat still calls for caution. Even with mostly quiet weather, a week of near-triple-digit afternoons can add up fast.

Austin-Weather & Environment