Ashland, WI 54806 Frost Dates
Frost dates for Ashland, WI, ZIP 54806
Typically, the last spring freeze lands around 05/20, roughly 265 days out. The first fall frost typically arrives around 10/02, about 133 frost-free days later.
Ashland sits in USDA Zone 5a (-20 to -15°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 5a around Ashland has about 5 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 Ashland's last frost
05/20 is the middle of 30 years of NOAA records, not a promise. Plant by 05/03 and you're betting against frost in roughly 9 years out of 10. 06/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ashland compares
About 133 days separate Ashland's last and first frost, putting it 38,045 of 40,283 ZIP codes nationally. Within WI, it ranks 784 of 860.
Learn more
the frost range explains how to read the range around Ashland's dates instead of trusting one, and local microclimates explains what one yard in Ashland can differ from the 54806 normal.