Brentwood, MO 63144 Frost Dates
When can you plant in Brentwood, MO?
The last spring frost here typically falls around 04/01, about 216 days from today. The first fall frost typically arrives around 11/04, about 218 frost-free days later.
Zone 7a (0 to 5°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 Brentwood, not a forecast for this year.
What to do before the first frost
About 10 weeks of growing season left in Brentwood before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/14 and you're betting against frost in roughly 9 years out of 10. 04/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Brentwood compares
Brentwood's growing season runs about 218 days, ranking 13,249 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 81 of 1,129.
Learn more
local microclimates covers what one yard in Brentwood can differ from the 63144 normal. zone vs. frost date covers why Zone 7a and Brentwood's frost date answer different questions.