A Heat Advisory is in place for most of South Texas from now until 7 PM Monday evening. This is in place because some air temperatures could get as high as 106° over the next few afternoons. This kind of heat can cause heat-related illness. Try to limit time outside, especially in the afternoon. Stay hydrated, and wear light-colored clothing. Make sure your pets are hydrated and have a cool place to stay, too.
Temperatures Sunday afternoon will top out near 102° in San Antonio. Skies will be sunny once again.
Temperatures peak on Monday, near 103°.
By Tuesday, things will slowly start to improve. There will be some more clouds in the sky. Highs should drop below 100° for most, but humidity will be slightly higher. That'll keep heat indices in the low 100s. A couple of showers look possible east of I-35 on Tuesday, though most of us will miss out.