Two Harbors, MN 55616 Frost Dates
When can you plant in Two Harbors, MN?
The last spring frost here typically falls around 05/12, about 257 days from today. The first fall frost typically arrives around 10/06, about 145 frost-free days later.
The USDA Plant Hardiness Zone Map puts Two Harbors in Zone 3b (-35 to -30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 6 weeks of growing season left in Two Harbors before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Two Harbors's last frost
05/12 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 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 Two Harbors compares
About 145 days separate Two Harbors's last and first frost, putting it 36,193 of 40,283 ZIP codes nationally. Within MN, it ranks 632 of 943.
Learn more
the frost range covers how to read the range around Two Harbors's dates instead of trusting one. local microclimates covers what one yard in Two Harbors can differ from the 55616 normal.