Fairborn, OH 45433 Frost Dates
45433, near Fairborn, OH: the frost window
Typically, the last spring freeze lands around 04/16, roughly 231 days out. Fall's first freeze usually shows up around 10/28, roughly 194 days after the last spring frost.
Fairborn 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
Fairborn's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
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.
Fairborn against the rest of the dataset
Fairborn's growing season runs about 194 days, ranking 19,432 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 154 of 1,383.
Learn more
Two guides worth reading on 45433: zone vs. frost date, on why Zone 6b and Fairborn's frost date answer different questions, and the frost range, on how to read the range around Fairborn's dates instead of trusting one.