Notus, ID 83606 Frost Dates
83606, near Notus, ID: the frost window
Around 04/27 is the usual last spring frost, about 242 days away. Fall's first freeze usually shows up around 10/09, roughly 165 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Notus in Zone 7a (0 to 5°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
Notus's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/09 and only about 1 year in 10 sees frost after that.
Notus against the rest of the dataset
At roughly 165 frost-free days, Notus places 30,688 of 40,283 ZIP codes in this dataset. Within ID, it ranks 68 of 320.
Learn more
Two guides worth reading on 83606: the frost range, on how to read the range around Notus's dates instead of trusting one, and local microclimates, on what one yard in Notus can differ from the 83606 normal.