Frost Dates for 78140 — Nixon, Texas

Half of springs at Nixon, TX see their last 32°F night by March 7; only one in ten is past it by February 9, and one in ten still has one after March 30. Planting tender crops after March 16 leaves a 30% risk of a frost on them, after March 22 20%, and after March 30 10%. The 23 days between the even-odds date and the one-in-ten date is wider than at 72% 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 22 in half of years, as early as November 2 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 4; in spring the one-in-ten date for 28°F is March 14, 16 days before the 32°F one. The freeze-free season lasts 260 days in a typical year, longer than at 64% of the 339 Texas stations; it reaches 293 days one year in ten and falls short of 229 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 14 days longer, to about March 21, and return around November 11. Nights of 24°F, cold enough to damage hardier plants, come in 86% of winters and 16°F in 12%.

August is the warmest month at Nixon, TX, averaging 97°F by day and 72°F at night; January is the coldest at 65°F and 38°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 61% of years.

Warmth for growing adds up to 7,155 growing degree days a year (base 50°F), more than at 72% of the 351 Texas stations. 42% of them (3,016) have built up by the end of June, and August adds the most, 1,069. Precipitation totals 34.5 inches a year, most in May (4.4") and least in January (2.1"); May to September bring 48% of it.

The nearest other station, Gonzales 2S, TX, 23 miles northeast of Nixon, has a last frost 9 days earlier (February 26), a first frost 6 days later (November 28), a season 12 days longer.

Measurable snow is rare here: only 1 of 26 winters from 1991 to 2020 recorded 0.1 inch or more at Nixon, TX, 0.8 miles away, so there is no typical first-snow date to plan around.

ZIP 78140 is under a mile from Nixon, TX, which stands at 340 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 78160 (Stockdale). The 2023 USDA Plant Hardiness Zone Map lists ZIP 78140 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.