Frost Dates for 78377 — Refugio, Texas

Half of springs at Refugio 2 NW, TX see their last 32°F night by February 27; only one in ten is past it by January 26, and one in ten still has one after March 19. Planting tender crops after March 7 leaves a 30% risk of a frost on them, after March 13 20%, and after March 19 10%. The 20 days between the even-odds date and the one-in-ten date is narrower than at 51% of the 339 Texas stations behind this site's ZIP pages.

In fall the first 32°F night comes by December 2 in half of years, as early as November 10 one year in ten, and holds off past January 2 one year in ten. A hard freeze of 28°F follows 16 days later, around December 18; in spring the one-in-ten date for 28°F is March 9, 10 days before the 32°F one. The freeze-free season lasts 283 days in a typical year, longer than at 79% of the 339 Texas stations; it reaches 324 days one year in ten and falls short of 251 one year in ten. On average 11 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 11 days longer, to about March 10, and return around November 21. Nights of 24°F, cold enough to damage hardier plants, come in 62% of winters and 16°F in 6%.

August is the warmest month at Refugio 2 NW, TX, averaging 95°F by day and 74°F at night; January is the coldest at 67°F and 45°F. From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 70% of years and March still brings one in 44% of years.

Warmth for growing adds up to 7,844 growing degree days a year (base 50°F), more than at 86% of the 351 Texas stations. 43% of them (3,391) have built up by the end of June, and August adds the most, 1,073. Precipitation totals 34.9 inches a year, most in October (4.0") and least in February (2.0"); May to September bring 47% of it.

The nearest other station, Welder Wildlife Foundation, TX, 18 miles southwest of Refugio, has a last frost 3 days earlier (February 24), a first frost 1 day earlier (December 1).

Measurable snow is rare here: only 1 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Refugio 2 NW, TX, 2.9 miles away, so there is no typical first-snow date to plan around.

ZIP 78377 is 3 miles from Refugio 2 NW, TX, which stands at 45 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 78377 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.