Carson City, MI 48889 Frost Dates
Carson City, MI: when does the frost end?
Typically, the last spring freeze lands around 05/01, roughly 246 days out. Fall's first freeze usually shows up around 10/13, roughly 164 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Carson City in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 7 weeks until Carson City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Carson City's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/19 and only about 1 year in 10 sees frost after that.
Carson City against the rest of the dataset
Carson City's growing season runs about 164 days, ranking 31,044 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 501 of 1,153.
Learn more
Before leaning on 48889's figures: local microclimates explains what one yard in Carson City can differ from the 48889 normal, while zone vs. frost date explains why Zone 6a and Carson City's frost date answer different questions.