Dayton, IN 47941 Frost Dates
Dayton, IN: when does the frost end?
The last spring frost here typically falls around 04/20, about 235 days from today. Fall's first freeze usually shows up around 10/20, roughly 182 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 Dayton, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Dayton's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/20 isn't a guarantee
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Dayton against the rest of the dataset
At roughly 182 frost-free days, Dayton places 24,203 of 40,283 ZIP codes in this dataset. Within IN, it ranks 437 of 927.
Learn more
Before leaning on 47941's figures: local microclimates explains what one yard in Dayton can differ from the 47941 normal, while zone vs. frost date explains why Zone 6a and Dayton's frost date answer different questions.