Richland Center, WI 53584 Frost Dates
Frost dates for Richland Center, WI, ZIP 53584
Around 05/05 is the usual last spring frost, about 250 days away. The first fall frost typically arrives around 10/06, about 154 frost-free days later.
Zone 4b (-25 to -20°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 Richland Center, not a forecast for this year.
What to do before the first frost
Zone 4b around Richland Center 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.
How much risk comes with planting early here
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/21 and you're betting against frost in roughly 9 years out of 10. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Richland Center compares
Richland Center's growing season runs about 154 days, ranking 34,270 of 40,283 US ZIP codes measured here, longest to shortest. Within WI, it ranks 476 of 860.
Learn more
the frost range explains how to read the range around Richland Center's dates instead of trusting one, and local microclimates explains what one yard in Richland Center can differ from the 53584 normal.