Westerville, OH 43081 Frost Dates
43081, near Westerville, OH: the frost window
Around 04/20 is the usual last spring frost, about 235 days away. Fall's first freeze usually shows up around 10/24, roughly 185 days after the last spring frost.
Westerville sits in USDA Zone 6b (-5 to 0°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
Westerville'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 Westerville's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
Westerville against the rest of the dataset
Westerville's growing season runs about 185 days, ranking 23,057 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 534 of 1,383.
Learn more
Two guides worth reading on 43081: zone vs. frost date, on why Zone 6b and Westerville's frost date answer different questions, and the frost range, on how to read the range around Westerville's dates instead of trusting one.