Seattle weather: Temperatures warming up this weekend

Published April 18, 2026 4:00 AM PDT

Temperatures will warm nicely this weekend in western Washington with a mix of clouds and sunshine.

High pressure is building in, bringing plenty of sun and a noticeable warm-up. Mostly dry and mild conditions Saturday afternoon as the weather warms up into the upper 60s to low 70s.

Clouds move in Saturday night into Sunday morning and persist through Monday.  Temperatures will warm into the low 70s for more locations Monday including Seattle.

What's next:

A weather system will slide south along the coast on Sunday, but for most of western Washington, it’s more of a "near miss." We’ll keep mostly dry conditions, with a mix of clouds and sun. Temperatures remain very comfortable, topping out again in the upper 60s to low 70s inland.

If you like warm spring weather, Monday is your day. Inland areas will see highs in the low to mid 70s, making it the warmest day of this stretch. Cooler spots near the water will stay in the 60s.

By Tuesday into Wednesday, that offshore system shifts inland and may bring wrap-around moisture back into the region.

A map showing the upper level weather pattern.

Showers will roll in on Tuesday and Wednesday as a low pressure system moves onshore. (FOX 13 Seattle)

That means scattered showers returning and temperatures easing back into the upper 50s to 60s, right around normal.

Things should dry out again next weekend.

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The Source: Information in this story came from the FOX 13 Seattle Weather Team and the National Weather Service.

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