This is winter?!? Seattle ties all-time January record high at Sea-Tac with 64 degrees

The sun shines on a record-warm day in January (KOMO Photo)

SEATTLE -- Is it really winter? Or has spring sprung?

You can be excused for thinking so as Seattle soared to 64 degrees Monday afternoon, not just shattering the record high for the day of 58 degrees, but tied the all-time January record at Sea-Tac Airport! The only other time it's been this warm there was Jan. 20, 1981.

Sea-Tac has been Seattle's official record-keeping spot since 1945. If you count the old records from the Downtown Federal Building, the all-time January record high is 67, set on Jan. 28, 1931.

An approaching weather system was drawing some warm air up ahead of it, plus pulling in some easterly winds. Those winds are warming up a bit further as they sink down the Cascades. Had this been a summer day, we'd likely be well into the 90s.

But temperatures were variable depending on whether you had the warming east wind. Some spots like Tacoma, Olympia and Whatcom County were "only" in the low-mid 50s. The normal highs for this time of year are in the upper 40s.

If this is nirvana, I hope you soaked up this rather bonus day of sunshine and warmth because this spring preview is coming to an end...rather abruptly.

Clouds will increase this evening with rain developing overnight as a weather system moves in and puts the kibosh on this 60 degree January business. Lows will be in the mid 40s.

Expect a much cooler, grayer -- and rainier day Tuesday. It won't be a soaking rain, but enough to make it feel like January again. Highs will drop to around 50.

Long range forecasts keep it way more January than April with rain at times each day into early next week and high temperatures back in the 40s.

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