Athens, MI 49052 Frost Dates
49052, near Athens, MI: the frost window
The last spring frost here typically falls around 04/30, about 245 days from today. Fall's first freeze usually shows up around 10/19, roughly 170 days after the last spring frost.
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 Athens, not a forecast for this year.
Stretching the season past the first frost
Athens's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Athens's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Athens against the rest of the dataset
At roughly 170 frost-free days, Athens places 29,127 of 40,283 ZIP codes in this dataset. Within MI, it ranks 335 of 1,153.
Learn more
Two guides worth reading on 49052: zone vs. frost date, on why Zone 6a and Athens's frost date answer different questions, and the frost range, on how to read the range around Athens's dates instead of trusting one.