Florence, OR 97439 Frost Dates
Florence, OR: when does the frost end?
Typically, the last spring freeze lands around 02/15, roughly 171 days out. Fall's first freeze usually shows up around 12/09, roughly 306 days after the last spring frost.
Florence 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
With roughly 15 weeks until Florence'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
02/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/23 and only about 1 year in 10 sees frost after that.
Florence against the rest of the dataset
About 306 days separate Florence's last and first frost, putting it 3,686 of 40,283 ZIP codes nationally. Within OR, it ranks 6 of 463.
Learn more
Before leaning on 97439's figures: local microclimates explains what one yard in Florence can differ from the 97439 normal, while zone vs. frost date explains why Zone 9a and Florence's frost date answer different questions.