Rochester Hills, MI 48307 Frost Dates
Frost dates for Rochester Hills, MI, ZIP 48307
The last spring frost here typically falls around 04/29, about 244 days from today. The first fall frost typically arrives around 10/20, about 172 frost-free days later.
Rochester Hills sits in USDA Zone 6a (-10 to -5°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
Zone 6a around Rochester Hills 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 Rochester Hills's last frost
04/29 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Rochester Hills compares
Rochester Hills's growing season runs about 172 days, ranking 28,134 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 243 of 1,153.
Learn more
the frost range explains how to read the range around Rochester Hills's dates instead of trusting one, and local microclimates explains what one yard in Rochester Hills can differ from the 48307 normal.