Yelm, WA 98599 Frost Dates
Yelm, WA: when does the frost end?
The last spring frost here typically falls around 04/29, about 244 days from today. Fall's first freeze usually shows up around 10/14, roughly 169 days after the last spring frost.
Zone 8b (15 to 20°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Yelm, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Yelm's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Yelm's last frost
04/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Yelm against the rest of the dataset
About 169 days separate Yelm's last and first frost, putting it 29,374 of 40,283 ZIP codes nationally. Within WA, it ranks 522 of 700.
Learn more
Before leaning on 98599's figures: local microclimates explains what one yard in Yelm can differ from the 98599 normal, while zone vs. frost date explains why Zone 8b and Yelm's frost date answer different questions.