Filer, ID 83328 Frost Dates
Filer, ID: when does the frost end?
The last spring frost here typically falls around 05/09, about 254 days from today. Fall's first freeze usually shows up around 10/04, roughly 147 days after the last spring frost.
Zone 7a (0 to 5°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 Filer, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Filer's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/28 and only about 1 year in 10 sees frost after that.
Filer against the rest of the dataset
About 147 days separate Filer's last and first frost, putting it 35,908 of 40,283 ZIP codes nationally. Within ID, it ranks 132 of 320.
Learn more
Before leaning on 83328's figures: the frost range explains how to read the range around Filer's dates instead of trusting one, while local microclimates explains what one yard in Filer can differ from the 83328 normal.