Fernan Lake Village, ID 83877 Frost Dates
83877, near Fernan Lake Village, ID: the frost window
Around 04/22 is the usual last spring frost, about 237 days away. Fall's first freeze usually shows up around 10/18, roughly 179 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Fernan Lake Village in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Fernan Lake Village's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Fernan Lake Village against the rest of the dataset
About 179 days separate Fernan Lake Village's last and first frost, putting it 25,511 of 40,283 ZIP codes nationally. Within ID, it ranks 47 of 320.
Learn more
Two guides worth reading on 83877: local microclimates, on what one yard in Fernan Lake Village can differ from the 83877 normal, and zone vs. frost date, on why Zone 6b and Fernan Lake Village's frost date answer different questions.