Crouch, ID 83602 Frost Dates
Frost dates for Crouch, ID, ZIP 83602
Around 05/31 is the usual last spring frost, about 276 days away. The first fall frost typically arrives around 09/16, about 108 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 Crouch, not a forecast for this year.
What to do before the first frost
Zone 7a around Crouch has about 3 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.
How much risk comes with planting early here
05/31 is the middle of 30 years of NOAA records, not a promise. Plant by 05/08 and you're betting against frost in roughly 9 years out of 10. 06/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Crouch compares
About 108 days separate Crouch's last and first frost, putting it 39,550 of 40,283 ZIP codes nationally. Within ID, it ranks 243 of 320.
Learn more
zone vs. frost date explains why Zone 7a and Crouch's frost date answer different questions, and the frost range explains how to read the range around Crouch's dates instead of trusting one.