Dundee, OR 97115 Frost Dates
Dundee, OR: when does the frost end?
Typically, the last spring freeze lands around 03/21, roughly 205 days out. Fall's first freeze usually shows up around 11/22, roughly 241 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Dundee in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 12 weeks until Dundee's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
03/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/19 and only about 1 year in 10 sees frost after that.
Dundee against the rest of the dataset
Dundee's growing season runs about 241 days, ranking 8,549 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 122 of 463.
Learn more
Before leaning on 97115's figures: the frost range explains how to read the range around Dundee's dates instead of trusting one, while local microclimates explains what one yard in Dundee can differ from the 97115 normal.