Northwood, OH 43605 Frost Dates
43605, near Northwood, 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 10/27, roughly 188 days after the last spring frost.
Northwood 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
Northwood'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
04/20 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.
Northwood against the rest of the dataset
At roughly 188 frost-free days, Northwood places 21,985 of 40,283 ZIP codes in this dataset. Within OH, it ranks 378 of 1,383.
Learn more
Two guides worth reading on 43605: the frost range, on how to read the range around Northwood's dates instead of trusting one, and local microclimates, on what one yard in Northwood can differ from the 43605 normal.