A fair but warming weekend, highs in the low 80s Friday then jumping to near 90 Saturday and Sunday. The heat index this weekend will peak in the low 90s, overnight lows stay steamy near 70. Showers and thunderstorms break the heat early next week, Monday night into Tuesday.

Tonight: Evening storms, low 64.

Friday: Mostly sunny, high of 80.

Saturday: Sunny, highs of 88.

Sunday: Mostly sunny, high of 88.