LongCast

Friday Weatherin Seattle, Washington

May 21, 2027

Seasonal Outlook

Mild with a chance of showers

Expected high

60–67°

Expected low

48–52°

Rain risk

Moderate

49% of past years

Confidence: LowTypical for this time of year

What will it feel like?

Expect a mild day in Seattle that feels cool in the morning and evening. There's some chance of a passing shower.

What should I wear?

Long sleeves or a light jacket. Consider an umbrella or light rain jacket.

Good day for…

  • BeachPoor
  • Theme parkGood
  • Outdoor diningGood
  • HikingGood
  • Outdoor eventGood

What’s normal for this date?

Typical high
64°
Typical low
50°
Rain chance
49%

This outlook is based on what's typical for this time of year.

Past weather on this date

  • Last year (2026)72° / 53°
  • 5-year average62° / 49°
  • 10-year average63° / 49°
  • Warmest in that span72° (2026)
  • Coolest in that span43° (2022)

Details

  • Sunrise5:24 AM
  • Sunset8:47 PM
About this outlook

An outlook based on historical and seasonal patterns — not an exact forecast. The exact weather this far ahead can't be known — this shows what's most likely.

Sources: Open-Meteo historical archive (ERA5), past 10 years

Updated Tue, 06 Oct 2026 01:32:30 GMT