Enterprise, OR 97828 Frost Dates
When can you plant in Enterprise, OR?
Around 06/07 is the usual last spring frost, about 283 days away. The first fall frost typically arrives around 09/09, about 91 frost-free days later.
Enterprise sits in USDA Zone 7a (0 to 5°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.
What to do before the first frost
About 2 weeks of growing season left in Enterprise before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 06/07 isn't a guarantee
06/07 is the middle of 30 years of NOAA records, not a promise. Plant by 05/14 and you're betting against frost in roughly 9 years out of 10. 07/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Enterprise compares
About 91 days separate Enterprise's last and first frost, putting it 39,902 of 40,283 ZIP codes nationally. Within OR, it ranks 430 of 463.
Learn more
local microclimates covers what one yard in Enterprise can differ from the 97828 normal. zone vs. frost date covers why Zone 7a and Enterprise's frost date answer different questions.