Bay City, OR 97134 Frost Dates
Bay City, OR: when does the frost end?
The last spring frost here typically falls around 03/17, about 201 days from today. Fall's first freeze usually shows up around 11/22, roughly 251 days after the last spring frost.
Zone 9a (20 to 25°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Bay City, not a forecast for this year.
Stretching the season past the first frost
With roughly 12 weeks until Bay City'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
03/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/15 and only about 1 year in 10 sees frost after that.
Bay City against the rest of the dataset
Bay City's growing season runs about 251 days, ranking 7,353 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 61 of 463.
Learn more
Before leaning on 97134's figures: the frost range explains how to read the range around Bay City's dates instead of trusting one, while local microclimates explains what one yard in Bay City can differ from the 97134 normal.