METEOROLOGIST MELISSA FREY’S FORECAST DISCUSSION:
Today is the last warm, dry day before chilly wet weather moves in. The ridge of high pressure that has been with us since Sunday will move south and east while a cold front moves in from the northwest bringing showers to western Oregon tonight. The valley should see the first rain drops around 8 p.m.
The jet stream will continue to head south Wednesday and very cold, arctic air is going to settle over the Pacific Northwest. Scattered showers will stick with us Wednesday and high temps will fall to the mid 50s with lows dropping to the mid 30s.
Thursday will be even colder! Highs in the valley are going to top out in the upper 40s with lows falling to the low to mid 30s. The freezing level will drop to about 3,000 feet as this cold arctic air moves in. We’ll see snow showers off and Wednesday through Friday in the higher foothills and at the passes with rain showers in the valley.
Saturday is looking dry but still cold. Slightly warmer air will move in Sunday and another round of rain hits Sunday night. Monday is looking to be our first day back in the 50s after four straight days in the 40s.
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-Meteorologist Melissa Frey