We already saw snow at Crater Lake today and the coldest airmass won’t move in until tonight as snow levels drop to 4,500 feet by Wednesday morning. We could see another 1 to 3 inches of snow above 5,500 feet by Wednesday evening and this could lead to slick Cascade passes with some snow at times. A trough will continue to usher in cold air through Friday morning with lows on the east side below freezing Thursday and Friday mornings and potentially Saturday morning. A Frost Advisory is in effect for the Klamath Basin early Wednesday morning and a Freeze Watch is in effect for Thursday morning, but as we head into tomorrow I expect it to be upgraded to a Freeze Warning as even the warmer spots will see lows in the upper 20s.
Overnight we’ll see periods of moderate rain at the coast and in the Cascades with lighter showers for west side valleys; shower activity will diminish through the day tomorrow and end tomorrow evening. Tomorrow’s highs will be 20 to 25 degrees below normal! We should be in the 80s for west side areas and mid-70s for the east side but we’ll be in the low-60s and low-50s respectively. As clouds clear into Thursday morning temperatures are going to drop quickly and will struggle to rebound in the afternoon even though we’ll see more sunshine. We’ll see warmer afternoons to end the week and most areas will stay dry through the weekend, but we’ll see another chance for rain Sunday afternoon, mainly at the coast.
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Meteorologist Megan Parry