Waverly, WA 99039 Frost Dates
Frost dates for Waverly, WA, ZIP 99039
Around 05/30 is the usual last spring frost, about 275 days away. The first fall frost typically arrives around 09/04, about 94 frost-free days later.
The USDA Plant Hardiness Zone Map puts Waverly in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 6b around Waverly has about 1 week left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Waverly's last frost
05/30 is the middle of 30 years of NOAA records, not a promise. Plant by 05/09 and you're betting against frost in roughly 9 years out of 10. 07/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Waverly compares
Waverly's growing season runs about 94 days, ranking 39,858 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 696 of 700.
Learn more
local microclimates explains what one yard in Waverly can differ from the 99039 normal, and zone vs. frost date explains why Zone 6b and Waverly's frost date answer different questions.