Houston, TX 77009 Frost Dates
Houston, TX: when does the frost end?
The last spring frost here typically falls around 01/30, about 155 days from today. Fall's first freeze usually shows up around 12/28, roughly 330 days after the last spring frost.
Zone 9b (25 to 30°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 Houston, not a forecast for this year.
Stretching the season past the first frost
With roughly 17 weeks until Houston'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
01/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/29 and only about 1 year in 10 sees frost after that.
Houston against the rest of the dataset
About 330 days separate Houston's last and first frost, putting it 2,963 of 40,283 ZIP codes nationally. Within TX, it ranks 138 of 2,558.
Learn more
Before leaning on 77009's figures: local microclimates explains what one yard in Houston can differ from the 77009 normal, while zone vs. frost date explains why Zone 9b and Houston's frost date answer different questions.