Watch out on roads: Sunny weather on Sunday could give way to fog overnight

Sunny weather on Sunday lit up the fall colors in and around Modesto, but the National Weather Service forecasted fog overnight.

Drivers should be careful as the San Joaquin Valley enters the tule fog season, which can greatly reduce visibility. Experts advise people to slow down, keep plenty of distance from the vehicles in front, and use regular rather than high-beam headlights.

The forecast was for patchy fog from about 10 p.m. Sunday to 10 a.m. Monday.