Karnes City, TX 78118 Frost Dates
Karnes City, TX: when does the frost end?
Around 02/16 is the usual last spring frost, about 172 days away. Fall's first freeze usually shows up around 12/09, roughly 300 days after the last spring frost.
Karnes City sits in USDA Zone 9a (20 to 25°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
With roughly 15 weeks until Karnes City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Karnes City's last frost
02/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/13 and only about 1 year in 10 sees frost after that.
Karnes City against the rest of the dataset
Karnes City's growing season runs about 300 days, ranking 4,119 of 40,283 US ZIP codes measured here, longest to shortest. Within TX, it ranks 449 of 2,558.
Learn more
Before leaning on 78118's figures: local microclimates explains what one yard in Karnes City can differ from the 78118 normal, while zone vs. frost date explains why Zone 9a and Karnes City's frost date answer different questions.