Northport, MI 49674 Frost Dates
When can you plant in Northport, MI?
Around 05/09 is the usual last spring frost, about 254 days away. The first fall frost typically arrives around 10/26, about 169 frost-free days later.
Northport sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 8 weeks of growing season left in Northport before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/09 isn't a guarantee
05/09 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/24 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Northport compares
Northport's growing season runs about 169 days, ranking 29,566 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 349 of 1,153.
Learn more
the frost range covers how to read the range around Northport's dates instead of trusting one. local microclimates covers what one yard in Northport can differ from the 49674 normal.