Crosby, MS 39633 Frost Dates
When can you plant in Crosby, MS?
Around 03/11 is the usual last spring frost, about 195 days away. The first fall frost typically arrives around 11/17, about 251 frost-free days later.
Zone 9a (20 to 25°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 Crosby, not a forecast for this year.
What to do before the first frost
About 12 weeks of growing season left in Crosby before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Crosby's last frost
03/11 is the middle of 30 years of NOAA records, not a promise. Plant by 02/20 and you're betting against frost in roughly 9 years out of 10. 03/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Crosby compares
At roughly 251 frost-free days, Crosby places 7,405 of 40,283 ZIP codes in this dataset. Within MS, it ranks 135 of 523.
Learn more
local microclimates covers what one yard in Crosby can differ from the 39633 normal. zone vs. frost date covers why Zone 9a and Crosby's frost date answer different questions.