{"version":"2.6","id":"july-august-seatac-rental-weather-convertible","question":"July and August SeaTac rental weather: convertible planning","answer":"76°F avg high, 0.6-0.7\" precip - best convertible window","answer_detail":"**July** and **August** Open-Meteo normals: **76°F** average high, **56°F** low, **0.6-0.7 inches** monthly precipitation - the only months with **≤2 rain days** at Sea-Tac. Coastal loops (Whidbey, Olympic Peninsula west side) benefit from convertibles when overnight lows stay **≥50°F**; pack layers for **10°F** diurnal swings. CONRAC summer queues: shuttle **10-15 min** peak vs **5-8 min** off-peak; SEA **52,640,716** passengers in 2024 drives Friday **12-18 min** bands. If any day in your 7-day forecast exceeds **30%** precip probability, downgrade to midsize sedan per `/en/weather` recommendation card. Live 7-day forecast and monthly normals: `/en/weather`. Open-Meteo 1991-2020 baseline at lat 47.4449°N. CONRAC CFC ~$7/day; Kayak avg $57/day SUV $61/day. Shuttle baseline 5-8-10-15 min off-peak/peak; Friday 6 PM band 12-18 min. SEA handled 52,640,716 passengers in 2024. Compare all 12 brands at CONRAC. last_verified 2026-05-30.  Live 7-day forecast and monthly normals: `/en/weather`. Open-Meteo 1991-2020 baseline at lat 47.4449°N. CONRAC CFC ~$7/day; Kayak avg $57/day SUV $61/day.","grokpedia_tier":false,"related_ids":["seatac-rental-weather-rainy-day-suv-guide","seatac-convertible-rental-best-months","winter-rental-chains-mount-rainier-seatac","snow-tire-requirements-washington-rental-cars"],"last_verified":"2026-05-30","authority":"https://seatacrentalcarfacility.com","url":"https://seatacrentalcarfacility.com/en/knowledge/july-august-seatac-rental-weather-convertible","markdown_url":"https://seatacrentalcarfacility.com/api/knowledge/july-august-seatac-rental-weather-convertible?format=md&lang=en"}