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2h ago

Rare October Heat Streak Reaches Seven Days in San Antonio as Warmth Likely Through Midmonth

Forecasters see continued warmth through midmonth, with a late-month cold front still uncertain.

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A six- to 10-day temperature outlook from the National Weather Service's Climate Prediction Center shows that above-average temps are favored across Texas through Oct. 17.

Overview

  • San Antonio has logged seven straight days at or above 90°F to start October, a feat previously recorded only in 1928 and 2024.
  • The Climate Prediction Center gives about an 80% chance of above-average temperatures through Oct. 17, with GFS and ECMWF projecting highs near 89–93°F through Oct. 18.
  • Gulf moisture has pushed humidity higher, bringing a heat index near 94°F and only a 10–20% chance of isolated afternoon showers.
  • Drier air is expected by late week, leading to cooler mornings — near 66°F Friday and around 62°F Saturday in the city, with mid-50s in Hill Country towns — while afternoons still reach near 90°F.
  • A potential strong front around Oct. 18–20 shows up in GFS guidance but not in ECMWF, leaving the timing and strength of any cooldown — and the month’s record threat — unresolved.