Lake Orion, MI 48363 Frost Dates
Lake Orion, MI: when does the frost end?
The last spring frost here typically falls around 04/29, about 244 days from today. Fall's first freeze usually shows up around 10/20, roughly 172 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 Lake Orion, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Lake Orion's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Lake Orion's last frost
04/29 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 05/14 and only about 1 year in 10 sees frost after that.
Lake Orion against the rest of the dataset
About 172 days separate Lake Orion's last and first frost, putting it 28,306 of 40,283 ZIP codes nationally. Within MI, it ranks 259 of 1,153.
Learn more
Before leaning on 48363's figures: local microclimates explains what one yard in Lake Orion can differ from the 48363 normal, while zone vs. frost date explains why Zone 6a and Lake Orion's frost date answer different questions.