Springfield, MI 49017 Frost Dates
Frost dates for Springfield, MI, ZIP 49017
The last spring frost here typically falls around 05/06, about 251 days from today. The first fall frost typically arrives around 10/12, about 158 frost-free days later.
The USDA Plant Hardiness Zone Map puts Springfield 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 Springfield has about 6 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 05/06 isn't a guarantee
05/06 is the middle of 30 years of NOAA records, not a promise. Plant by 04/21 and you're betting against frost in roughly 9 years out of 10. 05/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Springfield compares
Springfield's growing season runs about 158 days, ranking 32,966 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 664 of 1,153.
Learn more
the frost range explains how to read the range around Springfield's dates instead of trusting one, and local microclimates explains what one yard in Springfield can differ from the 49017 normal.