Frost Dates for 77465 — Palacios, Texas

Half of springs at Palacios Municipal Airport, TX see their last 32°F night by February 1; only one in ten is past it by December 30, and one in ten still has one after March 7. Planting tender crops after February 19 leaves a 30% risk of a frost on them, after February 27 20%, and after March 7 10%. The 34 days between the even-odds date and the one-in-ten date is wider than at 96% 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 December 17 in half of years, as early as November 24 one year in ten, and holds off past January 18 one year in ten. A hard freeze of 28°F follows 16 days later, around January 2; in spring the one-in-ten date for 28°F is February 24, 11 days before the 32°F one. The freeze-free season lasts 319 days in a typical year, longer than at 92% of the 339 Texas stations; it reaches 357 days one year in ten and falls short of 278 one year in ten. On average 5 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 23 days longer, to about February 24, and return around November 30. A 24°F night is unusual: 21% of winters had one.

August is the warmest month at Palacios Municipal Airport, TX, averaging 93°F by day and 79°F at night; January is the coldest at 65°F and 46°F. From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 38% of years and March still brings one in 17% of years.

Warmth for growing adds up to 8,100 growing degree days a year (base 50°F), more than at 90% of the 351 Texas stations. 43% of them (3,489) have built up by the end of June, and August adds the most, 1,105. Precipitation totals 43.3 inches a year, most in September (5.9") and least in February (1.9"); May to September bring 51% of it.

The nearest other station, Pt Comfort, TX, 21 miles west of Palacios, has the same 50% last-frost date, a first frost 4 days later (December 21), a season 2 days longer.

Measurable snow is rare here: only 1 of 19 winters from 1991 to 2020 recorded 0.1 inch or more at Matagorda No 2, TX, 15.5 miles away, so there is no typical first-snow date to plan around.

ZIP 77465 is 2 miles from Palacios Municipal Airport, TX, which stands at 12 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 77465 in zone 9b, the band where the coldest night of the year averaged 25 to 30°F (-3.9 to -1.1°C) over 1991–2020; a zone describes winter lows, not frost dates.