Wallowa, OR 97885 Frost Dates
97885, near Wallowa, OR: the frost window
The last spring frost here typically falls around 06/07, about 283 days from today. Fall's first freeze usually shows up around 09/09, roughly 91 days after the last spring frost.
Zone 6b (-5 to 0°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 Wallowa, not a forecast for this year.
Stretching the season past the first frost
Wallowa's growing season runs out in roughly 2 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Wallowa's last frost
06/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 07/07 and only about 1 year in 10 sees frost after that.
Wallowa against the rest of the dataset
About 91 days separate Wallowa's last and first frost, putting it 39,905 of 40,283 ZIP codes nationally. Within OR, it ranks 433 of 463.
Learn more
Two guides worth reading on 97885: the frost range, on how to read the range around Wallowa's dates instead of trusting one, and local microclimates, on what one yard in Wallowa can differ from the 97885 normal.