Frost Dates for 75126 — Forney, Texas

Half of springs at Terrell Municipal Airport, TX see their last 32°F night by March 11; only one in ten is past it by February 21, and one in ten still has one after March 29. Planting tender crops after March 17 leaves a 30% risk of a frost on them, after March 22 20%, and after March 29 10%. The 18 days between the even-odds date and the one-in-ten date is narrower than at 75% of the 339 Texas stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 18 in half of years, as early as November 2 one year in ten, and holds off past December 6 one year in ten. A hard freeze of 28°F follows 12 days later, around November 30; in spring the one-in-ten date for 28°F is March 16, 13 days before the 32°F one. The freeze-free season lasts 250 days in a typical year, longer than at 52% of the 339 Texas stations; it reaches 278 days one year in ten and falls short of 225 one year in ten. On average 35 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 24, and return around November 7. Nights of 24°F, cold enough to damage hardier plants, come in 97% of winters and 16°F in 33%.

August is the warmest month at Terrell Municipal Airport, TX, averaging 96°F by day and 74°F at night; January is the coldest at 57°F and 36°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 75% of years.

Warmth for growing adds up to 6,511 growing degree days a year (base 50°F), more than at 56% of the 351 Texas stations. 40% of them (2,608) have built up by the end of June, and August adds the most, 1,089. Precipitation totals 38.4 inches a year, most in May (4.7") and least in July (2.0"); May to September bring 39% of it.

The nearest other station, Kaufman 3 SE, TX, 17 miles southeast of Forney, has a last frost 5 days later (March 16), a first frost 4 days earlier (November 14), a season 7 days shorter.

Measurable snow is rare here: only 2 of 18 winters from 1991 to 2020 recorded 0.1 inch or more at Terrell, TX, 8.1 miles away, so there is no typical first-snow date to plan around.

ZIP 75126 is 12 miles from Terrell Municipal Airport, TX, which stands at 475 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 75126 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.