Eagle River, WI 54512 Frost Dates
Frost dates for Eagle River, WI, ZIP 54512
The last spring frost here typically falls around 05/25, about 270 days from today. The first fall frost typically arrives around 09/21, about 117 frost-free days later.
The USDA Plant Hardiness Zone Map puts Eagle River in Zone 4a (-30 to -25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 4a around Eagle River 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
05/25 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. 06/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Eagle River compares
About 117 days separate Eagle River's last and first frost, putting it 39,249 of 40,283 ZIP codes nationally. Within WI, it ranks 852 of 860.
Learn more
local microclimates explains what one yard in Eagle River can differ from the 54512 normal, and zone vs. frost date explains why Zone 4a and Eagle River's frost date answer different questions.