I had mine go off the other day here in Maryland when the temp dropped to about 15 degrees. Checked the tires and they were all showing about 28 pounds. I inflated them to 32 or 33 and drove like 3 feet and the light went off. The light had never come on before so I'm pretty sure it was the cold temps. They must have been sitting at 29 or 30 for the last couple months.