Mud Lake, ID 83435 Frost Dates
Frost dates for Mud Lake, ID, ZIP 83435
Typically, the last spring freeze lands around 06/03, roughly 279 days out. The first fall frost typically arrives around 09/11, about 98 frost-free days later.
Mud Lake sits in USDA Zone 4b (-25 to -20°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 4b around Mud Lake has about 2 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.
Why 06/03 isn't a guarantee
06/03 is the middle of 30 years of NOAA records, not a promise. Plant by 05/15 and you're betting against frost in roughly 9 years out of 10. 06/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mud Lake compares
At roughly 98 frost-free days, Mud Lake places 39,764 of 40,283 ZIP codes in this dataset. Within ID, it ranks 252 of 320.
Learn more
the frost range explains how to read the range around Mud Lake's dates instead of trusting one, and local microclimates explains what one yard in Mud Lake can differ from the 83435 normal.