If you’re headed to the California Mid State Fair this weekend to see Sammy Hagar, the B-52s, or Luke Bryan, be prepared for the heat. The National weather service has issued an excessive heat warning for today and tomorrow in the north county. Afternoon temps are expected to be near 110 before they back off a bit on Sunday. Health officials remind everyone to stay hydrated, wear loose-fitting cool clothing, and find shade when you can.