Springfield, OH 45505 Frost Dates
Springfield, OH: when does the frost end?
The last spring frost here typically falls around 04/25, about 240 days from today. Fall's first freeze usually shows up around 10/19, roughly 175 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 Springfield, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Springfield's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
Springfield against the rest of the dataset
Springfield's growing season runs about 175 days, ranking 26,725 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 1,009 of 1,383.
Learn more
Before leaning on 45505's figures: zone vs. frost date explains why Zone 6a and Springfield's frost date answer different questions, while the frost range explains how to read the range around Springfield's dates instead of trusting one.