From Rusty Garrett:
Say goodbye to 80s and 90s for the time being as a brief shot of cold air is settling over Central Texas. Winds will subside overnight, allowing for Saturday morning lows to fall into the lower and middle 30s.
The chilly start to the day Saturday translates into a cooler-than-normal afternoon. Sunshine will still be plentiful, but high temperatures will only climb into the upper 50s and lower 60s. Winds become easterly Saturday afternoon and southerly Sunday morning.
The return of south winds means the return of some warmth. Highs Sunday will rebound nicely into the middle and upper 60s with partly cloudy skies. A weak upper-air disturbance will traverse our area, bringing us a 30% chance of afternoon and evening showers. The best rain chances will be east of I-35, but rain shouldn't be too widespread or heavy. A few showers may linger until Monday morning, but Monday should remain mostly dry as highs return into the middle 70s.