Montgomery, OH 45242 Frost Dates
45242, near Montgomery, OH: the frost window
The last spring frost here typically falls around 04/16, about 231 days from today. Fall's first freeze usually shows up around 10/25, roughly 190 days after the last spring frost.
Zone 6b (-5 to 0°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 Montgomery, not a forecast for this year.
Stretching the season past the first frost
Montgomery's growing season runs out in roughly 8 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 Montgomery's last frost
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/03 and only about 1 year in 10 sees frost after that.
Montgomery against the rest of the dataset
Montgomery's growing season runs about 190 days, ranking 21,093 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 316 of 1,383.
Learn more
Two guides worth reading on 45242: zone vs. frost date, on why Zone 6b and Montgomery's frost date answer different questions, and the frost range, on how to read the range around Montgomery's dates instead of trusting one.