Seattle, Washington weather in July

Averages from 2021–2025 (155 days of record).

Average high: 78°F
Average low: 59°F
Rainy days: ~1 per month
Total precipitation: 0.3 in
Warmest recorded: 92°F
Coldest recorded: 54°F

Expect July days in Seattle, Washington to top out around 78°F and cool to about 59°F overnight, with roughly 1 days of measurable rain across the month. In recent years July has ranged from 54°F to 92°F.

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Current Seattle, Washington forecast → · Historical data by Open-Meteo (ERA5).