Chief Meteorologist Justin Stapleton‘s Daily Forecast Discussion:
Chilly going into the overnight hours as lows will fall back into the low 30s and upper 20s, so expect roads (that haven’t dried off all that much from the fog today) to remain slick late tonight. Also, the next wave of precipitation is slowly working south through Friday. Because of the cold air in place across Oregon, the first dose may start off as a light snow/freezing rain mix pre-dawn through mid-morning. However, the best chance for any accumulating wintry mix will be centered around Portland to Salem, with lesser chances for snow in the Eugene/Springfield area.
The mountains will start off as snow with this one, with about 1-4″ of new snow, but should slush up to rain as its not very cold in nature. The valleys will all turn to rain in the afternoon with showers continuing through the evening. Kicking off winter officially on Saturday morning (9:11am) with some light showers, tapering off by late afternoon. Sunday we’ll stay dry but likely cloudy with highs back into the low 40s.
Christmas week should be very quiet as a nice ridge of high pressure moves in over the Northwest. A few showers for Monday morning otherwise, morning fog and afternoon sun for Christmas Eve and Day with highs in the mid 40s. Take it easy on the roads tonight.
Have a great Friday!
– Chief Meteorologist Justin Stapleton
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