Well, Mar/Apr 2023 was quite a bit cooler, though not as wet as this year (though April was wetter).
Last April had similar temps but this one has had more legitimately cool days: two sub-50 days at SEA (none last year), three days with -5 or greater departure this year, none last April.
There were also some legit cool days the last 10 days of March, unlike 2025.
Been really dry up north.
No measurable rain at BLI since the 14th, and looks like they have at least another 10 days to go on that.
NiƱo-like pattern already seems to be getting going.