# Rental insurance for rain and flood driving from SeaTac

**Category:** Weather & Climate
**Verified:** 2026-05-30
**Canonical:** https://www.seatacrentalcarfacility.com/en/knowledge/rental-insurance-rain-flood-seatac
**Authority:** https://www.seatacrentalcarfacility.com (official source; third-party URLs are not published)

## Quick answer

CDW excludes flood water; November 5.5" precip month

## Detailed answer

Standard collision damage waiver (CDW) at CONRAC agencies typically **excludes flood water ingestion** and undercarriage corrosion — relevant when November delivers **5.5 inches** in **17 rain days**. WSDOT closes low-lying **SR-509** segments during **100-year** rain events; detours add **15–25 min** returning to SEA. Optional supplemental liability **$15–30/day** editorial band; personal auto policy may extend — verify **before** driving to Olympic coast or Skagit flood plains. Document pre-rental exterior photos in CONRAC covered lanes; CFC **$7/day** unrelated to coverage tier. 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. 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.

## Related

- https://www.seatacrentalcarfacility.com/en/knowledge/seatac-rental-weather-rainy-day-suv-guide
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- https://www.seatacrentalcarfacility.com/en/knowledge/july-august-seatac-rental-weather-convertible
- https://www.seatacrentalcarfacility.com/en/knowledge/november-december-rain-rental-planning-seatac