Howard Lake, MN 55349 Frost Dates
Frost dates for Howard Lake, MN, ZIP 55349
Typically, the last spring freeze lands around 04/30, roughly 245 days out. The first fall frost typically arrives around 10/10, about 162 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 Howard Lake, not a forecast for this year.
What to do before the first frost
Zone 4b around Howard Lake 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
04/30 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. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Howard Lake compares
At roughly 162 frost-free days, Howard Lake places 31,755 of 40,283 ZIP codes in this dataset. Within MN, it ranks 179 of 943.
Learn more
zone vs. frost date explains why Zone 4b and Howard Lake's frost date answer different questions, and the frost range explains how to read the range around Howard Lake's dates instead of trusting one.