Springfield, OH 45504 Frost Dates
Frost dates for Springfield, OH, ZIP 45504
Typically, the last spring freeze lands around 04/25, roughly 240 days out. The first fall frost typically arrives around 10/19, about 175 frost-free days later.
The USDA Plant Hardiness Zone Map puts Springfield in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 6a around Springfield has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
04/25 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Springfield compares
Springfield's growing season runs about 175 days, ranking 26,724 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 1,008 of 1,383.
Learn more
local microclimates explains what one yard in Springfield can differ from the 45504 normal, and zone vs. frost date explains why Zone 6a and Springfield's frost date answer different questions.