San Antonio Weather Brings Rare October Heat Before Late-Week Cold Front
High amounts of Gulf moisture are streaming into South Texas this week, pushing San Antonio temperatures into the 90s with heat index values reaching the triple-digits, according to a report by expressnews.com. This unseasonably humid weather is a rarity for October, though forecast models indicate a significant cold front will arrive by late week to bring cooler autumn air.
Monday starts mild and muggy with temperatures sitting in the low to mid-70s through 9 a.m. Temperatures will climb to 85 degrees by noon and reach highs between 90 and 91 degrees during the late afternoon under partly cloudy skies. High atmospheric humidity will push heat index values as high as 99 degrees, while increased moisture brings a 20% to 30% chance of isolated afternoon and evening showers or storms to the San Antonio area.
Peak Heat Expected Tuesday and Wednesday
The hottest days of the week arrive Tuesday and Wednesday as San Antonio high temperatures reach between 92 and 94 degrees. Heat index values during the mid- to late afternoon will climb as high as 102 degrees. Isolated showers and storms remain possible, though rain chances stay at 20% or lower across the region.
A strong low pressure system moving from the northern Plains into the upper Midwest will drag a cold front behind it, pushing through Texas late Thursday into Friday. San Antonio can expect the front to arrive between Friday morning and early afternoon, dropping afternoon temperatures into the 70s accompanied by northerly wind gusts reaching 35 mph.
Weekend Temperature Drop and Rain Outlook
Northerly winds will drive colder air into South-Central Texas through the weekend. Saturday high temperatures in San Antonio will sit in the 70s, while parts of the Hill Country top out in the upper 60s. By late Saturday night and early Sunday morning, low temperatures will fall into the 50s for most areas, with certain spots potentially dropping into the 40s.
The cold front brings a 30% chance of scattered showers and thunderstorms to San Antonio upon its arrival late Thursday and early Friday. Higher rain chances reaching 50% are expected across parts of the Hill Country. High levels of uncertainty remain regarding the exact strength of the front, meaning expected temperatures next weekend could still shift based on future weather model data.
Frequently Asked Questions About the Texas Cold Front
How hot will San Antonio get before the cold front arrives?
San Antonio high temperatures will reach 90 to 91 degrees on Monday, and peak between 92 and 94 degrees on Tuesday and Wednesday, with heat index values climbing up to 102 degrees.
When is the cold front expected to hit San Antonio?
The cold front is most likely to push through San Antonio between Friday morning and the early afternoon, bringing strong north wind gusts at 35 mph and temperatures falling into the 70s.
How cold will temperatures get over the weekend?
By late Saturday night and early Sunday morning, low temperatures are forecast to drop into the 50s for most of the region, with some spots potentially falling into the 40s.
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