Humble, TX 77039 Frost Dates
77039, near Humble, TX: the frost window
The last spring frost here typically falls around 02/13, about 169 days from today. Fall's first freeze usually shows up around 12/09, roughly 300 days after the last spring frost.
Humble sits in USDA Zone 9b (25 to 30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Humble's growing season runs out in roughly 15 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 02/13 isn't a guarantee
02/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/12 and only about 1 year in 10 sees frost after that.
Humble against the rest of the dataset
At roughly 300 frost-free days, Humble places 4,092 of 40,283 ZIP codes in this dataset. Within TX, it ranks 422 of 2,558.
Learn more
Two guides worth reading on 77039: zone vs. frost date, on why Zone 9b and Humble's frost date answer different questions, and the frost range, on how to read the range around Humble's dates instead of trusting one.