Wheeler, OR 97147 Frost Dates
97147, near Wheeler, OR: the frost window
Around 04/02 is the usual last spring frost, about 217 days away. Fall's first freeze usually shows up around 11/12, roughly 223 days after the last spring frost.
Wheeler sits in USDA Zone 9a (20 to 25°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
Wheeler's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/02 isn't a guarantee
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/29 and only about 1 year in 10 sees frost after that.
Wheeler against the rest of the dataset
Wheeler's growing season runs about 223 days, ranking 12,123 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 168 of 463.
Learn more
Two guides worth reading on 97147: zone vs. frost date, on why Zone 9a and Wheeler's frost date answer different questions, and the frost range, on how to read the range around Wheeler's dates instead of trusting one.