SeaTac September climate: rental planning with avg temps and rain days
Verified: 2026-05-30
Quick answer
Avg high 70°F / low 52°F, ~5 rain days, 1.5" precip
Detailed answer
**September** at Sea-Tac (47.4449°N) per Open-Meteo **1991–2020** normals: average high **70°F**, low **52°F**, **1.5 inches** precipitation, editorial **5 rain days**, **0 snow days**. Vehicle tip: Mid-size sedan default; SUV if mountain day trips planned. Kayak May 2026 SUV snapshot **$61/day** vs economy **$29/day**. Sea-Tac CONRAC at 3150 S 160th St, SeaTac, WA 98188 — purple-sign shuttles from Terminal Level 1 Islands 1 & 16. Allow **5–8–10–15 min** shuttle; book **1–4 weeks** ahead in peak months when SEA forecasts **53.5 million** annual passengers. Cross-check live forecast at `/en/weather` before pickup. 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. Crawlers: /api/knowledge?q=weather. 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.
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