Sunday through Memorial Day Weekend: humid, warm and unsettled weather is on deck for the KSAT Weather Authority audience, with a small chance for evening showers on Sunday and the arrival of daily storm chances beginning Tuesday night. Meteorologists are watching the placement and timing of a slow-moving cool front that could spark strong storms, hail and street flooding across many neighborhoods, while overall rainfall totals could reach 1 to 3 inches in spots. This forecast highlights both the short-term outlook for Sunday and the multi-day pattern that looks likely to stick around through the holiday weekend.

Sunday will feel noticeably more humid than Saturday and highs should climb near 90 degrees, so expect a sticky afternoon if you’re outside. Skies will be mostly cloudy with occasional breaks of sun, giving windows of brighter weather between the cloudier stretches. The evening holds only a small, about 20 percent, chance for a shower or storm, so most plans should be fine but keep a light umbrella handy just in case.

The bigger story arrives next week when the pattern turns unsettled and persistent. Rounds of atmospheric energy riding along a slow-moving cool front are expected to push storms into the area on a nearly daily basis, beginning Tuesday night and continuing through Memorial Day Weekend. That kind of repeated storm activity makes exact timing and placement tough to forecast in advance, which means localized pockets of heavy rain are likely while other spots see only scattered activity.

Where storms do organize and train over the same areas, ingredients will exist for both strong or severe storms and episodes of significant downpours capable of producing street flooding. Hail is a hazard to watch for in stronger cells, and any low-lying or poorly drained roads could turn dangerous very quickly after heavy bursts. Given the uncertainty of storm tracks, residents should monitor updates and avoid driving into flooded streets — it only takes a few inches of water to sweep a vehicle off the road.

The practical bottom line is simple: this is a week to check the forecast every day and to be ready for changing conditions. Keep phones charged, have a basic emergency kit available, and know your preferred way to receive severe weather alerts so you’re not caught off guard. Make sure you have the KSAT Weather Authority App installed for local updates and livestreams from trusted meteorologists as conditions evolve.

The rainfall itself is mostly welcome given ongoing dry conditions across parts of our region, and many neighborhoods could end up with a cumulative 1 to 3 inches between Tuesday night and the weekend. That amount would be helpful for drought relief, but remember that good totals in the aggregate can still mean sudden intense bursts in localized areas. Those bursts are the ones that produce street flooding and localized impacts well before groundwater and reservoirs show meaningful improvement.

Keep an eye on the headlines, be ready to change plans if severe weather threatens, and practice basic flood safety: do not drive through flooded roads and seek shelter during lightning and hail. Meteorologists will refine timing and placement as the week approaches, so the best defense is staying informed and flexible about outdoor activities. With attention and preparation, you can ride out an unsettled stretch of weather with minimal surprises.

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