Frost Dates for 78947 — Lexington, Texas

Half of springs at Lexington, TX see their last 32°F night by March 5; only one in ten is past it by February 10, and one in ten still has one after March 31. Planting tender crops after March 15 leaves a 30% risk of a frost on them, after March 21 20%, and after March 31 10%. The 26 days between the even-odds date and the one-in-ten date is wider than at 84% 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 21 in half of years, as early as November 3 one year in ten, and holds off past December 11 one year in ten. A hard freeze of 28°F follows 12 days later, around December 3; in spring the one-in-ten date for 28°F is March 14, 17 days before the 32°F one. The freeze-free season lasts 262 days in a typical year, longer than at 67% of the 339 Texas stations; it reaches 294 days one year in ten and falls short of 231 one year in ten. On average 27 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 15 days longer, to about March 20, and return around November 10. Nights of 24°F, cold enough to damage hardier plants, come in 89% of winters and 16°F in 10%.

August is the warmest month at Lexington, TX, averaging 96°F by day and 73°F at night; January is the coldest at 61°F and 39°F. A freezing night is all but certain in every month from December to 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 85% of years and March still brings one in 57% of years.

Warmth for growing adds up to 6,966 growing degree days a year (base 50°F), more than at 68% of the 351 Texas stations. 41% of them (2,890) have built up by the end of June, and August adds the most, 1,076. Precipitation totals 37.6 inches a year, most in May (4.7") and least in July (2.1"); May to September bring 42% of it.

The nearest other station, Elgin 1 N, TX, 20 miles west of Lexington and 171 feet higher, has a last frost 1 day earlier (March 4), a first frost 3 days later (November 24), a season 2 days longer.

Measurable snow is rare here: only 1 of 25 winters from 1991 to 2020 recorded 0.1 inch or more at Lexington, TX, 1.6 miles away, so there is no typical first-snow date to plan around.

ZIP 78947 is 2 miles from Lexington, TX, which stands at 423 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 78942 (Giddings). The 2023 USDA Plant Hardiness Zone Map lists ZIP 78947 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.