Helix, OR 97835 Frost Dates
Helix, OR: when does the frost end?
The last spring frost here typically falls around 04/26, about 241 days from today. Fall's first freeze usually shows up around 10/16, roughly 174 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Helix in Zone 7a (0 to 5°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 7 weeks until Helix'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
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Helix against the rest of the dataset
At roughly 174 frost-free days, Helix places 27,640 of 40,283 ZIP codes in this dataset. Within OR, it ranks 312 of 463.
Learn more
Before leaning on 97835's figures: local microclimates explains what one yard in Helix can differ from the 97835 normal, while zone vs. frost date explains why Zone 7a and Helix's frost date answer different questions.