Frost Dates for 78164 — Yorktown, Texas

Half of springs at Cuero, TX see their last 32°F night by March 2; only one in ten is past it by February 2, and one in ten still has one after March 24. Planting tender crops after March 11 leaves a 30% risk of a frost on them, after March 17 20%, and after March 24 10%. The 22 days between the even-odds date and the one-in-ten date is wider than at 63% of the 339 Texas stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.

In fall the first 32°F night comes by November 27 in half of years, as early as November 4 one year in ten, and holds off past December 21 one year in ten. A hard freeze of 28°F follows 12 days later, around December 9; in spring the one-in-ten date for 28°F is March 12, 12 days before the 32°F one. The freeze-free season lasts 270 days in a typical year, longer than at 71% of the 339 Texas stations; it reaches 306 days one year in ten and falls short of 238 one year in ten. On average 21 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 13 days longer, to about March 15, and return around November 12. Nights of 24°F, cold enough to damage hardier plants, come in 77% of winters and 16°F in 13%.

August is the warmest month at Cuero, TX, averaging 98°F by day and 74°F at night; January is the coldest at 66°F and 42°F. A freezing night is all but certain in January (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 80% of years and March still brings one in 51% of years.

Warmth for growing adds up to 7,830 growing degree days a year (base 50°F), more than at 85% of the 351 Texas stations. 43% of them (3,348) have built up by the end of June, and August adds the most, 1,122. Precipitation totals 34.3 inches a year, most in May (4.4") and least in February (1.5"); May to September bring 49% of it.

The nearest other station, Karnes City 2N, TX, 22 miles west of Yorktown and 236 feet higher, has a last frost 14 days earlier (February 16), a first frost 12 days later (December 9), a season 30 days longer.

Measurable snow is rare here: only 2 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Yorktown, TX, 0.6 miles away, so there is no typical first-snow date to plan around.

ZIP 78164 is 13 miles from Cuero, TX, which stands at 214 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 77954 (Cuero). The 2023 USDA Plant Hardiness Zone Map lists ZIP 78164 in zone 9a, the band where the coldest night of the year averaged 20 to 25°F (-6.7 to -3.9°C) over 1991–2020; a zone describes winter lows, not frost dates.