Montgomery, MN 56069 Frost Dates
When can you plant in Montgomery, MN?
The last spring frost here typically falls around 05/02, about 247 days from today. The first fall frost typically arrives around 10/05, about 153 frost-free days later.
The USDA Plant Hardiness Zone Map puts Montgomery in Zone 4b (-25 to -20°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 5 weeks of growing season left in Montgomery before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/02 isn't a guarantee
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Montgomery compares
Montgomery's growing season runs about 153 days, ranking 34,536 of 40,283 US ZIP codes measured here, longest to shortest. Within MN, it ranks 409 of 943.
Learn more
the frost range covers how to read the range around Montgomery's dates instead of trusting one. local microclimates covers what one yard in Montgomery can differ from the 56069 normal.