Frost Dates for 78114 — Floresville, Texas

Half of springs at Floresville, TX see their last 32°F night by March 6; only one in ten is past it by February 10, 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 24 days between the even-odds date and the one-in-ten date is wider than at 76% 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 20 in half of years, as early as November 2 one year in ten, and holds off past December 12 one year in ten. A hard freeze of 28°F follows 13 days later, around December 3; 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 261 days in a typical year, longer than at 65% of the 339 Texas stations; it reaches 296 days one year in ten and falls short of 227 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 21, and return around November 8. Nights of 24°F, cold enough to damage hardier plants, come in 86% of winters and 16°F in 20%.

August is the warmest month at Floresville, TX, averaging 98°F by day and 73°F at night; January is the coldest at 65°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 86% of years and March still brings one in 61% of years.

Warmth for growing adds up to 7,407 growing degree days a year (base 50°F), more than at 77% of the 351 Texas stations. 43% of them (3,158) have built up by the end of June, and August adds the most, 1,094. Precipitation totals 31.7 inches a year, most in May (4.4") and least in January (1.6"); May to September bring 52% of it.

The nearest other station, San Antonio Stinson Airport, TX, 22 miles northwest of Floresville and 171 feet higher, has a last frost 14 days earlier (February 20), a first frost 13 days later (December 3), a season 30 days longer.

Measurable snow is rare here: only 0 of 25 winters from 1991 to 2020 recorded 0.1 inch or more at Floresville, TX, 1.6 miles away, so there is no typical first-snow date to plan around.

ZIP 78114 is 2 miles from Floresville, TX, which stands at 400 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 78114 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.