Hesperia, MI 49421 Frost Dates
Hesperia, MI: when does the frost end?
The last spring frost here typically falls around 05/17, about 262 days from today. Fall's first freeze usually shows up around 10/01, roughly 137 days after the last spring frost.
Hesperia sits in USDA Zone 5b (-15 to -10°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.
Stretching the season past the first frost
With roughly 5 weeks until Hesperia's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/01 and only about 1 year in 10 sees frost after that.
Hesperia against the rest of the dataset
Hesperia's growing season runs about 137 days, ranking 37,535 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 943 of 1,153.
Learn more
Before leaning on 49421's figures: zone vs. frost date explains why Zone 5b and Hesperia's frost date answer different questions, while the frost range explains how to read the range around Hesperia's dates instead of trusting one.