SAN FRANCISCO (CBS SF) – A stretch of unseasonable weather is back in the Bay Area through this weekend, according to the National Weather Service.

The air will be cool and wet in the North Bay and the system is expected to spread across the region through Wednesday night.

READ MORE: Girl Fights Off Man Who Touched, Punched, Spit At Her In Milpitas Park

Wind gusts of up to 40 mph are possible Wednesday through Thursday. The highest gusts will be on the hills, mountains and on the coast, weather officials said.

One-half to one inch of rain is expected over much the area with up to two inches possible in the North Bay and on coastal mountains.

READ MORE: COVID: Youth Nights At Levi's Stadium Add A Dose Of Fun To Teens' Vaccines

Rain may be lighter in some valleys.

A second system will arrive Thursday, bringing more rain and a threat of thunderstorms, weather officials said. Hail, lightning and brief heavy rain may accompany the thunderstorms.

More precipitation and gusty winds are possible on Saturday and Sunday.

MORE NEWS: Transient Man Arrested In Fatal Assault At Walnut Creek Civic Park

© Copyright 2019 CBS Broadcasting Inc. and Bay City News Service. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.