Lapwai, ID 83540 Frost Dates
Lapwai, ID: when does the frost end?
Around 04/06 is the usual last spring frost, about 221 days away. Fall's first freeze usually shows up around 10/26, roughly 200 days after the last spring frost.
Zone 7b (5 to 10°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 Lapwai, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Lapwai's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Lapwai's last frost
04/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/26 and only about 1 year in 10 sees frost after that.
Lapwai against the rest of the dataset
About 200 days separate Lapwai's last and first frost, putting it 17,843 of 40,283 ZIP codes nationally. Within ID, it ranks 2 of 320.
Learn more
Before leaning on 83540's figures: the frost range explains how to read the range around Lapwai's dates instead of trusting one, while local microclimates explains what one yard in Lapwai can differ from the 83540 normal.