Springfield, OR 97477 Frost Dates
When can you plant in Springfield, OR?
Around 04/11 is the usual last spring frost, about 226 days away. The first fall frost typically arrives around 10/23, about 196 frost-free days later.
The USDA Plant Hardiness Zone Map puts Springfield in Zone 8b (15 to 20°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
About 8 weeks of growing season left in Springfield before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Springfield's last frost
04/11 is the middle of 30 years of NOAA records, not a promise. Plant by 03/15 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Springfield compares
Springfield's growing season runs about 196 days, ranking 18,910 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 246 of 463.
Learn more
local microclimates covers what one yard in Springfield can differ from the 97477 normal. zone vs. frost date covers why Zone 8b and Springfield's frost date answer different questions.