Umbrellas up, galoshes on.

The Rogue Valley's recent dry, mild weather is expected to switch back over to cool and wet Thursday, according to the National Weather Service.

Rain is expected through Sunday, and as much as an inch could fall on the valley floor during that period.

"We may end up with close to an inch total," said meteorologist Marc Spilde.

Farther south, the Mount Shasta area is expected to get drenched, with as much as 2¾ inches forecast.

Clouds are expected to build through the day Thursday as a system drifts south along the Oregon Coast. Light precipitation will give way to heavier rain during the evening.

"Really good rainfall will hold off until Thursday night into Friday," Spilde said.

A brief break is expected for valley areas Friday evening into Saturday. The system is expected to shift east toward the Cascades, with several inches of snow forecast for parts of the mountains, including Crater Lake National Park. Snow levels may drop down to the Siskiyou Summit, though officials don't expect it to amount to much.

"I think the bulk of it will fall as rain," Spilde said.

Another system will move in Saturday afternoon, bringing more showers. High temperatures are expected to be in the low to mid 50s during the period, officials said.

— Reach reporter Ryan Pfeil at 541-776-4468 or rpfeil@mailtribune.com. Follow him at www.twitter.com/ryanpfeil.