Medford, OR 97501 Frost Dates
Frost dates for Medford, OR, ZIP 97501
Around 04/08 is the usual last spring frost, about 223 days away. The first fall frost typically arrives around 10/29, about 204 frost-free days later.
Medford sits in USDA Zone 8b (15 to 20°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
Zone 8b around Medford has about 9 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.
The actual range around Medford's last frost
04/08 is the middle of 30 years of NOAA records, not a promise. Plant by 03/17 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Medford compares
At roughly 204 frost-free days, Medford places 16,465 of 40,283 ZIP codes in this dataset. Within OR, it ranks 211 of 463.
Learn more
zone vs. frost date explains why Zone 8b and Medford's frost date answer different questions, and the frost range explains how to read the range around Medford's dates instead of trusting one.