Milwaukie, OR 97202 Frost Dates
Milwaukie, OR: when does the frost end?
Around 03/13 is the usual last spring frost, about 197 days away. Fall's first freeze usually shows up around 11/19, roughly 247 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Milwaukie in Zone 9a (20 to 25°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 Milwaukie's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Milwaukie's last frost
03/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/01 and only about 1 year in 10 sees frost after that.
Milwaukie against the rest of the dataset
Milwaukie's growing season runs about 247 days, ranking 7,800 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 93 of 463.
Learn more
Before leaning on 97202's figures: zone vs. frost date explains why Zone 9a and Milwaukie's frost date answer different questions, while the frost range explains how to read the range around Milwaukie's dates instead of trusting one.