Roosevelt Park, MI 49441 Frost Dates
Frost dates for Roosevelt Park, MI, ZIP 49441
Around 04/30 is the usual last spring frost, about 245 days away. The first fall frost typically arrives around 10/19, about 170 frost-free days later.
Zone 6b (-5 to 0°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 Roosevelt Park, not a forecast for this year.
What to do before the first frost
Zone 6b around Roosevelt Park has about 7 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 04/30 isn't a guarantee
04/30 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 Roosevelt Park compares
Roosevelt Park's growing season runs about 170 days, ranking 29,002 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 320 of 1,153.
Learn more
local microclimates explains what one yard in Roosevelt Park can differ from the 49441 normal, and zone vs. frost date explains why Zone 6b and Roosevelt Park's frost date answer different questions.