Glendale, OR 97497 Frost Dates
Glendale, OR: when does the frost end?
Typically, the last spring freeze lands around 05/16, roughly 261 days out. Fall's first freeze usually shows up around 10/30, roughly 164 days after the last spring frost.
Glendale sits in USDA Zone 8b (15 to 20°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
With roughly 9 weeks until Glendale's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Glendale's last frost
05/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/07 and only about 1 year in 10 sees frost after that.
Glendale against the rest of the dataset
At roughly 164 frost-free days, Glendale places 31,071 of 40,283 ZIP codes in this dataset. Within OR, it ranks 335 of 463.
Learn more
Before leaning on 97497's figures: the frost range explains how to read the range around Glendale's dates instead of trusting one, while local microclimates explains what one yard in Glendale can differ from the 97497 normal.