Fond du Lac, WI 54935 Frost Dates
When can you plant in Fond du Lac, WI?
The last spring frost here typically falls around 04/27, about 242 days from today. The first fall frost typically arrives around 10/19, about 174 frost-free days later.
Zone 5b (-15 to -10°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Fond du Lac, not a forecast for this year.
What to do before the first frost
About 7 weeks of growing season left in Fond du Lac before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/13 and you're betting against frost in roughly 9 years out of 10. 05/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Fond du Lac compares
Fond du Lac's growing season runs about 174 days, ranking 27,333 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 94 of 860.
Learn more
zone vs. frost date covers why Zone 5b and Fond du Lac's frost date answer different questions. the frost range covers how to read the range around Fond du Lac's dates instead of trusting one.