Saginaw, MI 48602 Frost Dates
Frost dates for Saginaw, MI, ZIP 48602
The last spring frost here typically falls around 04/29, about 244 days from today. The first fall frost typically arrives around 10/21, about 175 frost-free days later.
The USDA Plant Hardiness Zone Map puts Saginaw in Zone 6a (-10 to -5°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
Zone 6a around Saginaw has about 8 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.
The actual range around Saginaw's last frost
04/29 is the middle of 30 years of NOAA records, not a promise. Plant by 04/14 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Saginaw compares
About 175 days separate Saginaw's last and first frost, putting it 26,745 of 40,283 ZIP codes nationally. Within MI, it ranks 128 of 1,153.
Learn more
local microclimates explains what one yard in Saginaw can differ from the 48602 normal, and zone vs. frost date explains why Zone 6a and Saginaw's frost date answer different questions.