Monona, WI 53716 Frost Dates
Frost dates for Monona, WI, ZIP 53716
Typically, the last spring freeze lands around 05/01, roughly 246 days out. The first fall frost typically arrives around 10/10, about 160 frost-free days later.
Monona sits in USDA Zone 5b (-15 to -10°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 5b around Monona has about 6 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 Monona's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Monona compares
About 160 days separate Monona's last and first frost, putting it 32,280 of 40,283 ZIP codes nationally. Within WI, it ranks 342 of 860.
Learn more
the frost range explains how to read the range around Monona's dates instead of trusting one, and local microclimates explains what one yard in Monona can differ from the 53716 normal.