 From the KOTA studios, a heat advisory continues until 8 p.m. tonight. Slight chance of thunderstorms overnight. Otherwise, mainly clear skies. Lows dip down to about 65. Southwest winds around 5 miles an hour. Mainly sunny skies again Sunday. Slight chance of thunderstorms. Highs level off around 100. That's your weatherology forecast powered by weatherology.com. I'm staff meteorologist Ray Miller from the Signature Auto Sales Weather Center.