Salmon, ID 83462 Frost Dates
Frost dates for Salmon, ID, ZIP 83462
Around 06/01 is the usual last spring frost, about 277 days away. The first fall frost typically arrives around 09/17, about 107 frost-free days later.
Zone 5b (-15 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 Salmon, not a forecast for this year.
What to do before the first frost
Zone 5b around Salmon 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.
The actual range around Salmon's last frost
06/01 is the middle of 30 years of NOAA records, not a promise. Plant by 05/14 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 Salmon compares
At roughly 107 frost-free days, Salmon places 39,559 of 40,283 ZIP codes in this dataset. Within ID, it ranks 245 of 320.
Learn more
zone vs. frost date explains why Zone 5b and Salmon's frost date answer different questions, and the frost range explains how to read the range around Salmon's dates instead of trusting one.