The National Weather Service predicts snow tonight in the mountains but says skies should be sunnier come Mother's Day.
The agency issued a winter weather advisory this morning for the hillsides surrounding the Rogue Valley. That advisory will be in effect from 5 p.m. today until 11 a.m. Saturday for elevations about 4,500 feet. Snow accumulations are anticipated for the Cascades, Crater Lake, Lake of the Woods and the Siskiyou Summit. Up to 7 inches of snow is expected at Crater Lake, with an inch or two at Lake of the Woods and the Siskiyou pass.
Roadways near Crater Lake National Park, including highways 62, 230, 58 and 138, are expected to see snow accumulation, potentially turning to slush and slick, icy spots for motorists. Highways 140 and 97 also likely will be affected by snowfall.
Lower elevations will a tenth- to a quarter-inch of rain, forecasters said.
Meteorologist Dan Weygand said an area of low pressure moving offshore to Oregon and southern Washington is the reason for the sudden chill and precipitation.
"It'll pretty much be focused north of the Rogue Valley, but we'll definitely be getting some showers," Weygand said of the low pressure front.
Things are expected to improve Saturday, however. Weygand said there will be some lingering clouds and a few scattered showers.
Sunday morning could see some frost and a low temperature in the high 30s, but conditions are expected to warm up through the day to the low 70s.
"Mother's Day will be much nicer," Weygand said.
A warming trend is expected to continue into Wednesday because of a high pressure mass building up from the south, similar to the same mass that brought record high temperatures to Medford last week.
"We'll probably have some high temperatures exceeding 90 by Wednesday," Weygand said.
— Ryan Pfeil