Autumn hints arrive with a cooler, wetter break for San Antonio
As the calendar inches toward cooler days, the San Antonio area can expect a temporary lull in heat and a chance of showers this week. The National Weather Service says a weak cold front will nudge into South Central Texas, bringing breeze, clouds, and a path to lower temperatures for a few days.
What to expect this week
– Showers along the I-35 corridor are forecast to develop Monday, August 18, influenced by cooling air boundaries and sea-breeze dynamics. Expect gusty winds, the possibility of lightning, and even flash flooding in spots.
– Rain chances rise midweek, with the best potential for widespread precipitation on Thursday, August 21. The chance of rain could reach about 70%, mainly from 10 a.m. to 1 p.m.
– Cooler conditions are likely Thursday onward, with overnight lows around 73 degrees on Thursday night and a lower daytime high. Friday should be cooler still, with highs near 93 degrees.
– A recent heat index around 104 degrees provides a contrast to the upcoming milder air mass.
– Forecasters describe the front as weak—noticeable in the wind shifts and modest temperature changes rather than a dramatic drop. The cooling effect is expected to last through Monday, August 25, before the front drifts south and away from the area.
– After this stretch, the pattern may become drier, though some models suggest a return to rain the following week.
Why this is happening
– A weak cold front is moving into the region, bringing a change in wind direction and a few degrees of cooling. Meteorologists emphasize that the front is not a drastic autumn-style shift, but it will be enough to lower temperatures a bit and introduce more clouds and rain chances than the current warmth.
What this means for residents and activities
– Outdoor plans could feel more comfortable, especially in the late week period, making Riverwalk strolls, outdoor dining, and evening errands more pleasant.
– Be prepared for a thunderstorm risk on peak rain days, particularly Thursday, and keep an eye on local weather updates for possible localized flooding in flood-prone areas.
– If you’re planning events or trips, consider timing around the midday rain window and have a light rain jacket or umbrella handy.
Summary
The San Antonio area is in line for a brief cool-down with elevated rain chances midweek, followed by a return toward normal late-summer conditions. This week offers a welcome break from the heat, with the potential for a few thunderstorms and milder afternoons that can make outdoor activities more enjoyable.
Additional notes
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