 102.3 KRMG has Tulsa's most accurate and dependable forecast. Tonight, expect clear skies with a low in the upper 70s. On Monday, a heat advisory will be in effect from noon until 8 a.m. It will be sunny with highs around 103. Monday night, mostly clear, lows around 80. Tuesday, expect a high around 103 again. And Wednesday, partly sunny, a slight chance of thunders and showers.