Oceanside, CA 92056 Frost Dates
Oceanside, CA: when does the frost end?
Around 01/23 is the usual last spring frost, about 148 days away. Fall's first freeze usually shows up around 12/11, roughly 325 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Oceanside in Zone 10a (30 to 35°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 15 weeks until Oceanside's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Oceanside's last frost
01/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/22 and only about 1 year in 10 sees frost after that.
Oceanside against the rest of the dataset
Oceanside's growing season runs about 325 days, ranking 3,212 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,374 of 2,555.
Learn more
Before leaning on 92056's figures: the frost range explains how to read the range around Oceanside's dates instead of trusting one, while local microclimates explains what one yard in Oceanside can differ from the 92056 normal.