Wednesday Weatherin Seattle, Washington
October 21, 2026
Extended OutlookCool with rain likely
Expected high
54–58°
Expected low
45–49°
Rain risk
High
63% of past years
Confidence: FairTemperatures near normal
What will it feel like?
Expect a mild day in Seattle that feels cool in the morning and evening. Rain is fairly likely, so plan for some wet stretches.
What should I wear?
Long sleeves or a light jacket. Consider an umbrella or light rain jacket.
Good day for…
- BeachPoor
- Theme parkPoor
- Outdoor diningPoor
- HikingGood
- Outdoor eventFair
What’s normal for this date?
- Typical high
- 57°
- Typical low
- 48°
- Rain chance
- 63%
This outlook: temperatures near normal.
Past weather on this date
- Last year (2025)57° / 46°
- 5-year average58° / 49°
- 10-year average57° / 48°
- Warmest in that span67° (2021)
- Coolest in that span45° (2020)
Details
- Sunrise7:37 AM
- Sunset6:09 PM
About this outlook
Based on long-range trends, recent patterns and historical weather. 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 · Recent observed weather patterns
Updated Tue, 06 Oct 2026 01:32:10 GMT