Toledo, OR 97391 Frost Dates
97391, near Toledo, OR: the frost window
Typically, the last spring freeze lands around 03/21, roughly 205 days out. Fall's first freeze usually shows up around 11/27, roughly 252 days after the last spring frost.
Toledo sits in USDA Zone 9a (20 to 25°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.
Stretching the season past the first frost
Toledo's growing season runs out in roughly 13 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/21 isn't a guarantee
03/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/12 and only about 1 year in 10 sees frost after that.
Toledo against the rest of the dataset
Toledo's growing season runs about 252 days, ranking 7,238 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 52 of 463.
Learn more
Two guides worth reading on 97391: zone vs. frost date, on why Zone 9a and Toledo's frost date answer different questions, and the frost range, on how to read the range around Toledo's dates instead of trusting one.