Florence, OR 97480 Frost Dates
Florence, OR: when does the frost end?
Around 02/15 is the usual last spring frost, about 171 days away. 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
At roughly 306 frost-free days, Florence places 3,688 of 40,283 ZIP codes in this dataset. Within OR, it ranks 8 of 463.
Learn more
Before leaning on 97480's figures: the frost range explains how to read the range around Florence's dates instead of trusting one, while local microclimates explains what one yard in Florence can differ from the 97480 normal.