How Many Triple Digit Days In Austin 2025. And following relentless hot and dry conditions, that september saw the terrifying bastrop county complex. Austin is in the midst of the longest continuous stretch of 100º heat in 125 years of record keeping at austin's camp mabry.

Already, that kicks 26% of our respondents out. Austin’s hottest year in recorded history was in 2023, with 80 days over 100º and 45 consecutive days in triple digits.