Ack! How frustrating to think you have a car problem sorted out only for it to come back again. But don’t worry. There are a few potential reasons your tire pressure is low in the summer, including temperature changes or a slow leak.
Warmer weather means your tire pressure is probably more stable than usual. But depending on where you live, temperatures might still drop significantly overnight. Every 10 degree change in temperature equals a 1 psi change in pressure, so if you’re noticing lower tire pressure in the morning, that could be why.