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Hard freeze, coldest night yet this winter on the way

Teens to low 20s Wednesday morning

San Antonio gradually warming. (Copyright 2024 by KSAT - All rights reserved.)

FORECAST HIGHLIGHTS

  • TONIGHT: Hard freeze, refreezing of puddles .... roads fine
  • TOMORROW: Near 20° in the morning, then 50° in the afternoon
  • GRADUAL WARMING: Morning freezes end this weekend

FORECAST

Our coldest night yet this winter is upon us with morning lows expected to dip into the lower 20s within San Antonio and upper teens in outlying areas. Full sunshine will quickly warm us above freezing by 10am leading to afternoon temperatures near 50°. It won’t be as cold going forward, but prepare for light freezes Thursday and Friday morning.

Afternoon high temperatures will gradually warmup and ultimately peak near 70° on Sunday. Also, prepare for a cloudy stretch of weather beginning Saturday and lasting into next week. Thick low clouds will likely generate drizzle Saturday into Sunday along with isolated showers this weekend and into next week, but as of now we’re not expecting drought-denting accumulations.

HARD FREEZE TONIGHT - COVER EXPOSED PIPES

Temperatures will plummet tonight, thanks to clear skies and light winds. In San Antonio, temperatures are forecast to hit the low-20s, while teens are possible in the Hill Country. This is cold enough to where exposed pipes should be protected.

Temperatures Wednesday morning (Copyright 2025 by KSAT - All rights reserved.)

WARM-UP THROUGH THE END OF THE WORK WEEK

San Antonio forecast as of 1/21/25. (Copyright 2024 by KSAT - All rights reserved.)

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About the Authors
Justin Horne headshot

Justin Horne is a meteorologist and reporter for KSAT 12 News. When severe weather rolls through, Justin will hop in the KSAT 12 Storm Chaser to safely bring you the latest weather conditions from across South Texas. On top of delivering an accurate forecast, Justin often reports on one of his favorite topics: Texas history.

Mia Montgomery headshot

Meteorologist Mia Montgomery joined the KSAT Weather Authority Team in September 2022. As a Floresville native, Mia grew up in the San Antonio area and always knew that she wanted to return home. She previously worked as a meteorologist at KBTX in Bryan-College Station and is a fourth-generation Aggie.

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