Oldsmar, FL 33615 Frost Dates
When can you plant in Oldsmar, FL?
Around 01/20 is the usual last spring frost, about 145 days away. The first fall frost typically arrives around 01/12, about 365 frost-free days later.
Zone 10a (30 to 35°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Oldsmar, not a forecast for this year.
What to do before the first frost
About 20 weeks of growing season left in Oldsmar before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 01/20 isn't a guarantee
01/20 is the middle of 30 years of NOAA records, not a promise. Plant by 02/10 and you're betting against frost in roughly 9 years out of 10. 12/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Oldsmar compares
Oldsmar's growing season runs about 365 days, ranking 1,639 of 40,283 US ZIP codes measured here, longest to shortest. Within FL, it ranks 675 of 1,609.
Learn more
the frost range covers how to read the range around Oldsmar's dates instead of trusting one. local microclimates covers what one yard in Oldsmar can differ from the 33615 normal.