Another round of Arctic air slated to arrive by MLK Day

  

PRELIMINARY OUTLOOK:

  • Cold front arrives late Saturday, with colder air starting to filter in on Sunday. Coldest air settles in by Sunday
  • Overnight hard freezes are likely starting Sunday
  • Wintry precipitation is possible, mainly on Monday night and Tuesday morning
  • You’ll want to dress warm for the Martin Luther King Jr. March with morning wind chills in the teens and 20s
  • Forecast details will still change over the next few days as a clearer picture comes into focus

COLD AIR ON THE WAY

Another round of Arctic air will spill into the U.S. this weekend, and is likely to cause a noticeable change across Texas into early next week.

After climbing into the 60s Saturday afternoon, a strong cold front will push through before the end of the day. Colder air quickly filters in via a gusty north wind, with highs likely struggling to climb out of the 40s on Sunday.

Currently, the coldest air settles in by Sunday AM. That’s when hard freezes look to be possible in the mornings as lows drop into the 20s. You’ll want to finish those hard freeze preparations before Saturday Evening!

>> What to know about 38th-annual MLK March, Celebration in San Antonio

If you plan to participate in the MLK March on Monday, be prepared to dress very warmly. Wind chills could dip down into the teens in some locations early in the morning. High temperatures in the 20s and 30s are currently expected during this timeframe.

Morning lows this week as of 1/17/2025. (Copyright 2024 by KSAT – All rights reserved.)

PRECIPITATION

While it is still a few days out and nothing is set in stone, confidence is increasing that South Central Texas will see some type of light wintry precipitation by the time all is said and done.

Moisture is limited, but the light precipitation arrives Monday evening, and departs by Tuesday midday. Profiles of the atmosphere indicate that sleet and freezing rain may mix with snowflakes for those in San Antonio. Any precipitation would come to an end midday on Tuesday.

While we aren’t expecting major impacts, you’ll want to keep a close eye on the forecast and check back often as more data rolls in.

While this is not set in stone, a wintry mix will be possible for parts of Texas next around January 20-21st.

More updates to come! We’ll keep you posted.