Emmett, ID 83617 Frost Dates
Frost dates for Emmett, ID, ZIP 83617
Typically, the last spring freeze lands around 04/30, roughly 245 days out. The first fall frost typically arrives around 10/17, about 168 frost-free days later.
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 Emmett, not a forecast for this year.
What to do before the first frost
Zone 7a around Emmett has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Emmett's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Emmett compares
Emmett's growing season runs about 168 days, ranking 29,696 of 40,283 US ZIP codes measured here, longest to shortest. Within ID, it ranks 64 of 320.
Learn more
zone vs. frost date explains why Zone 7a and Emmett's frost date answer different questions, and the frost range explains how to read the range around Emmett's dates instead of trusting one.