Name: Rick Corey Everett WA 98204 (Zone 8a) Sunset Zone 5. Koppen Csb. Eco 2f
Do you want to compare hardiness zones, or average-date-of-last-spring-frost?
For example, I'm Zone 8b, but my average last spring frost date is April 6. And we have many mild weeks all winter and especially from early February on. yet my summer doesn't get really HOT ever, and evenings stay pretty cool until July.