Frost Dates for 75163 — Trinidad, Texas

Half of springs at Athens, TX see their last 32°F night by March 18; only one in ten is past it by February 27, and one in ten still has one after April 6. Planting tender crops after March 26 leaves a 30% risk of a frost on them, after March 31 20%, and after April 6 10%. The 19 days between the even-odds date and the one-in-ten date is narrower than at 63% of the 339 Texas stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 12 in half of years, as early as October 28 one year in ten, and holds off past December 1 one year in ten. A hard freeze of 28°F follows 12 days later, around November 24; in spring the one-in-ten date for 28°F is March 26, 11 days before the 32°F one. The freeze-free season lasts 242 days in a typical year, shorter than at 58% of the 339 Texas stations; it reaches 267 days one year in ten and falls short of 216 one year in ten. On average 41 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 31, and return around November 3. Nights of 24°F, cold enough to damage hardier plants, come in 99% of winters and 16°F in 49%.

August is the warmest month at Athens, TX, averaging 95°F by day and 72°F at night; January is the coldest at 58°F and 35°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 85% of years and April still brings one in 20% of years.

Warmth for growing adds up to 6,257 growing degree days a year (base 50°F), fewer than at 56% of the 351 Texas stations. 40% of them (2,510) have built up by the end of June, and August adds the most, 1,044. Precipitation totals 44.7 inches a year, most in October (5.1") and least in July (2.5"); May to September bring 37% of it.

The nearest other station, Corsicana Campbell Field, TX, 20 miles southwest of Trinidad, has a last frost 11 days earlier (March 7), a first frost 11 days later (November 23), a season 19 days longer.

Measurable snow is rare here: only 1 of 15 winters from 1991 to 2020 recorded 0.1 inch or more at Corsicana 8 E, TX, 13.3 miles away, so there is no typical first-snow date to plan around.

ZIP 75163 is 16 miles from Athens, TX, which stands at 448 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 7 other ZIP codes share the station; its figures are presented in full for 75751 (Athens). The 2023 USDA Plant Hardiness Zone Map lists ZIP 75163 in zone 8b, the band where the coldest night of the year averaged 15 to 20°F (-9.4 to -6.7°C) over 1991–2020; a zone describes winter lows, not frost dates.