It’s going to be a hot and humid start to your week because of this weekend’s rainfall across Oklahoma. KOCO 5 Meteorologist Jonathan Conder says a heat advisory will be in effect for southern and central Oklahoma, including the OKC metro, Monday afternoon and evening as the heat index will be over 105 degrees. Highs will be in the upper 80s in northeastern Oklahoma but will reach 95 in the OKC metro and as hot as 102 in Altus.