Jupiter Island, FL 33455 Frost Dates
Jupiter Island, FL: 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 01/18, roughly 365 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Jupiter Island in Zone 10b (35 to 40°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 20 weeks until Jupiter Island'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
01/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 02/10 and only about 1 year in 10 sees frost after that.
Jupiter Island against the rest of the dataset
Jupiter Island's growing season runs about 365 days, ranking 1,977 of 40,283 US ZIP codes measured here, longest to shortest. Within FL, it ranks 880 of 1,609.
Learn more
Before leaning on 33455's figures: local microclimates explains what one yard in Jupiter Island can differ from the 33455 normal, while zone vs. frost date explains why Zone 10b and Jupiter Island's frost date answer different questions.