Portland residents will start their workweek with temperatures in the 40s and a chance of rain, forecasters say.

The National Weather Service predicts cloudy skies and a high near 48 degrees Monday. There will be a south wind of 6 to 10 mph and a 20 percent chance of rain, the agency says.

Up to a quarter-inch of rain is possible Monday night.

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National Weather Service

December precipitation

Portland International Airport received .04 inches of precipitation over the weekend, bringing our December total to .41 inches. The airport normally gets almost 5-1/2 inches of precipitation in December.

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The Oregonian/OregonLive

Rainy Tuesday

Forecasters say up to an inch of rain may fall in Portland on Tuesday. Up to another half-inch is possible that night.

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The Oregonian/OregonLive

Winter Storm Warning

The weather service has also issued a winter storm warning for the northern Oregon Cascades, including Government Camp, Santiam Pass and Detroit. The agency expects 12 to 18 inches of snow to accumulate. Some areas could get up to 2 feet.

The warning is in effect from 6 a.m. Tuesday to 6 a.m. Wednesday.

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File photo/The Oregonian/OregonLive

New snow a boon for skiers

Fresh snow will be a boon for skiers and other winter sports enthusiasts.

There's a 28-inch base of snow at Timberline Lodge and 21 inches at the base of Mt. Hood Meadows, according to ski area reports.

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— Jim Ryan

jryan@oregonian.com

503-221-8005; @Jimryan015