Lyndon Station, WI 53944 Frost Dates
Frost dates for Lyndon Station, WI, ZIP 53944
Typically, the last spring freeze lands around 05/08, roughly 253 days out. The first fall frost typically arrives around 10/03, about 146 frost-free days later.
Lyndon Station 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 Lyndon Station 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.
Why 05/08 isn't a guarantee
05/08 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lyndon Station compares
About 146 days separate Lyndon Station's last and first frost, putting it 36,092 of 40,283 ZIP codes nationally. Within WI, it ranks 646 of 860.
Learn more
zone vs. frost date explains why Zone 5a and Lyndon Station's frost date answer different questions, and the frost range explains how to read the range around Lyndon Station's dates instead of trusting one.