Sylvan Lake, MI 48328 Frost Dates
When can you plant in Sylvan Lake, MI?
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.
Zone 6a (-10 to -5°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 Sylvan Lake, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Sylvan Lake before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
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 Sylvan Lake compares
Sylvan Lake's growing season runs about 172 days, ranking 28,361 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 269 of 1,153.
Learn more
zone vs. frost date covers why Zone 6a and Sylvan Lake's frost date answer different questions. the frost range covers how to read the range around Sylvan Lake's dates instead of trusting one.