Image Source: KSAT

San Antonio weather will feature plenty of clouds and occasional light showers Thursday and Friday, but the most meaningful rainfall is expected to remain west of the city, closer to the Rio Grande.

According to the latest forecast from KSAT Weather Authority meteorologists Sarah Spivey, Justin Horne and Adam Caskey, moisture connected to Tropical Storm Vance will be pulled into West Texas over the next several days. That moisture may produce passing showers around San Antonio, although widespread and heavier rain is expected farther west.

San Antonio Weather Forecast Reveals a Sharp Rainfall Divide

Residents in the San Antonio area should prepare for a mostly cloudy pattern through Friday. Light rain could develop periodically, but forecasters expect rainfall totals in the city to remain relatively low.

The forecast changes significantly west of San Antonio. Communities along and near the Rio Grande could see heavier downpours as deeper tropical moisture moves into the region. Some locations may receive much more rain than areas closer to Bexar County.

Thursday and Friday: Passing light showers are possible around San Antonio.
West Texas and the Rio Grande: Heavier rain could develop in localized areas.
San Antonio rainfall: Totals are expected to remain low despite cloudy skies.
Saturday: Clouds should begin clearing, bringing brighter conditions.

Clouds Dominate Before a Brighter Saturday

While the chance of rain is not expected to disappear completely Thursday or Friday, the main impact for San Antonio will likely be overcast skies and occasional damp conditions. Drivers may encounter brief wet roads, especially during passing showers.

Forecasters expect conditions to improve Saturday as clouds clear from the area. The brighter weather could provide a welcome break for outdoor activities, weekend errands and local events.

Comfortable Halloween Weather With a Low Storm Chance

Halloween is expected to be warm and comfortable across the San Antonio area. Temperatures should be in the 70s during the evening, creating favorable conditions for trick-or-treating and outdoor celebrations.

There is a low-end chance for an isolated storm or pop-up downpour during the afternoon. However, quieter weather is expected to return by the time most families head outside for Halloween activities.

Families planning to attend outdoor events should still keep an eye on changing skies during the afternoon. A quick shower could develop in isolated areas, but widespread severe weather is not currently expected for trick-or-treat hours.

What to Watch in the Extended Forecast

Meteorologists are also monitoring a stronger low-pressure system that could push a front into South Texas early next week. The system may trigger a round of storms Monday night.

The front could bring a noticeable shift in temperatures. Forecast highs next week are expected to remain in the 70s, while morning temperatures may fall into the 50s. Cooler conditions could continue through Election Day, making it important for residents to prepare for a more autumn-like pattern.

At this stage, the timing and strength of the front remain uncertain. Forecast updates over the weekend should provide a clearer picture of storm chances and rainfall amounts.

What San Antonio Residents Should Know

The immediate forecast does not point to a major rain event for San Antonio. Instead, the area is likely to see a mix of clouds, passing showers and gradual clearing.

Residents west of the city and near the Rio Grande should remain more alert for heavy rain and potentially slick roads. Anyone traveling through West Texas Thursday or Friday should check local conditions before leaving.

For San Antonio, the biggest weather changes will arrive later: comfortable Halloween temperatures, a brighter Saturday and the possibility of storms followed by cooler air next week.

Frequently Asked Questions About San Antonio Weather

Will it rain in San Antonio on Thursday and Friday?

Passing light showers are possible on both days, but rainfall totals in San Antonio are expected to remain low. Heavier rain is more likely west of the city.

Will Halloween weather be comfortable in San Antonio?

Yes. Temperatures are expected to be in the 70s during the evening. A low chance of an isolated afternoon storm remains, but conditions should be quieter during trick-or-treat hours.

Where is the heaviest rain expected?

The heaviest rainfall is expected closer to the Rio Grande and across parts of West Texas, where deeper moisture from Tropical Storm Vance will be concentrated.

Could San Antonio see storms next week?

A low-pressure system could push a front into the area Monday night, bringing a possible round of storms. Cooler mornings and mild afternoons are expected afterward.