Enjoy this warm spring day during when Portland warms to temperatures not seen since late September. It isn’t going to last for long.
The National Weather Service says valley locations from Portland down to Eugene will see their warmest temperatures of the year so far Thursday with most areas moving well into the 70s. Portland’s high should reach about 77 degrees under clear sunny skies. Oakridge, west of Cottage Grove in the Cascade foothills, has a good shot of seeing temperatures hit 80 degrees.
Some areas will be windy as well, with offshore flow pushing air westward out of the Columbia River Gorge. Corbett and Troutdale could have strong wind gusts of 40-50 mph early in the day.
Although Portland will be warm Thursday, it won’t be record-setting heat. The record for this date of 85 degrees was set in 2016, a spring easily remembered as one that broke many April high temperature records, including the 89-degree day April 19.
But all of Thursday’s heat will get turned off like a light switch by Friday, when a cold front makes its way in from the coast and brings an almost 20-degree drop in the high and some showers. Most of Friday’s rain will fall after about 11 a.m. Skies will be mostly cloudy, and the high is expected to reach only 59 degrees.
Snow levels will start out high at 8,000 feet early Friday but fall to 3,000 feet by late afternoon. The Cascades will likely have had some snow melt due to the warm temperatures early in the week but should build some of that back over the weekend.
Saturday will usher in a weekend that will feel a lot more like January than April. A cold air mass moving into the region will support accumulating snow at times as low as 1,000 feet. Stronger showers at the valley floor could even see a few snowflakes mixed in with the rain. Stronger afternoon showers could also bring thunderstorms. The high will be about 53 degrees.
Sunday looks even colder, with snow levels hovering around 1,000 feet and chances of flakes mixed in with stronger showers. Snow sticking and accumulating on the valley floor would have a lot to overcome as spring temperatures and stronger solar warming fight against it. Portland’s latest date of measurable snow on record is March 25 (set in 1965). But records are made to be broken, right?
Sunday’s record lowest daytime high temperature was set in 2002 at 51 degrees. It’s certainly possible this April 10 will be close to that record and could even break it. The forecasted high is 52. Even the weather service is watching some models showing a 20% chance of 1 inch or more of snow below 1,000 feet in some areas this weekend, even along the coast. It’s a small chance, but one you may not have even considered in April.
Chances dramatically increase at locations above 1,000 feet. The Sunset Summit on U.S. 26 in the Coast Range has a 60% chance of seeing accumulating snow at times this weekend.
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April 07, 2022 at 08:06PM
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Will Portland remember this 77-degree Thursday if it’s snowing by Sunday? - OregonLive
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