Eagle River, WI 54554 Frost Dates
When can you plant in Eagle River, WI?
Typically, the last spring freeze lands around 05/25, roughly 270 days out. The first fall frost typically arrives around 09/24, about 121 frost-free days later.
Eagle River 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
About 4 weeks of growing season left in Eagle River before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Eagle River's last frost
05/25 is the middle of 30 years of NOAA records, not a promise. Plant by 05/10 and you're betting against frost in roughly 9 years out of 10. 06/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Eagle River compares
About 121 days separate Eagle River's last and first frost, putting it 39,014 of 40,283 ZIP codes nationally. Within WI, it ranks 843 of 860.
Learn more
the frost range covers how to read the range around Eagle River's dates instead of trusting one. local microclimates covers what one yard in Eagle River can differ from the 54554 normal.