Lake Park, MN 56554 Frost Dates
Frost dates for Lake Park, MN, ZIP 56554
Around 05/15 is the usual last spring frost, about 260 days away. The first fall frost typically arrives around 09/24, about 130 frost-free days later.
Zone 4a (-30 to -25°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 Lake Park, not a forecast for this year.
What to do before the first frost
Zone 4a around Lake Park has about 4 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 05/15 isn't a guarantee
05/15 is the middle of 30 years of NOAA records, not a promise. Plant by 05/02 and you're betting against frost in roughly 9 years out of 10. 05/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lake Park compares
Lake Park's growing season runs about 130 days, ranking 38,398 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 848 of 943.
Learn more
zone vs. frost date explains why Zone 4a and Lake Park's frost date answer different questions, and the frost range explains how to read the range around Lake Park's dates instead of trusting one.