Seasonal

Quite seasonal pattern ahead through the first half May 2025, with lots of dry, sunny days, a few wet ones, and mild temperatures.  Let’s call out the damp periods, and their location.  Mug time.

A band of showers/thunderstorms possible along the southern portion of OR, both sides of the Cascades, through Saturday evening.  Note that a shower or two could roam north as far as Eugene/Albany area.  For the rest of us, expect onshore breezes to pick-up late weekend and for the start of next week.

Monday Apr 28 presents as dry, but quite breezy (from the west) in the Columbia Gorge.  Late Mon into very early Tue a weak front may cross overhead, with an outside chance for very light precip.  Clearing by early Tue, opening the door for warmer temps on through the balance of next week.  Temps in the 70s across the region.  Thursday May 1 will likely be the warmest day of the week.  An onshore flow will become predominant by late Friday, starting in the Puget Sound first, then spreading south across western OR as Friday May 2 unfolds.

The weekend of May 3,4 looks breezy, esp Saturday, although dry.  Temps will be a bit cooler than the previous week.

Turning a bit muggy to start the first full week of May, as a trough of moisture rolls into SE OR; temps should run a tad warmer than the previous weekend.  Generally dry, except for portions east of the OR Cascades, until late Thu evening.  Onshore flow will increase again on Fri, with a rain band bringing the first widely spread measure of precip westside both in OR & WA late Fri night on through Saturday night.  Current charts suggest STRONG WINDS across the eastern regions of OR & WA, along with western ID.  Travelers be aware.  We’ll monitor this potential adverse wx to see if model’s verify.

Bottom line:  for the west side, there’s no widespread rain threat between now and Thu or Fri, May 8,9.  Again, favorable farming wx.

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