Frost Dates for 75050 — Grand Prairie, Texas

Half of springs at Arlington Six Flags, TX see their last 32°F night by March 9; only one in ten is past it by February 19, and one in ten still has one after April 2. Planting tender crops after March 18 leaves a 30% risk of a frost on them, after March 25 20%, and after April 2 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 October 31 one year in ten, and holds off past December 10 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 16, 17 days before the 32°F one. The freeze-free season lasts 253 days in a typical year, longer than at 56% of the 339 Texas stations; it reaches 280 days one year in ten and falls short of 223 one year in ten. On average 37 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 16 days longer, to about March 25, and return around November 8. Nights of 24°F, cold enough to damage hardier plants, come in 98% of winters and 16°F in 47%.

July is the warmest month at Arlington Six Flags, TX, averaging 94°F by day and 75°F at night; January is the coldest at 55°F and 34°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 67% of years and April still brings one in 11% of years.

Warmth for growing adds up to 6,204 growing degree days a year (base 50°F), fewer than at 59% of the 351 Texas stations. 39% of them (2,446) have built up by the end of June, and July adds the most, 1,077. Precipitation totals 40.2 inches a year, most in October (4.8") and least in August (2.4"); May to September bring 42% of it.

The nearest other station, Arlington Municipal Airport, TX, 8 miles southwest of Grand Prairie, has the same 50% last-frost date, a first frost 1 day later (November 21), a season 3 days longer.

Measurable snow is rare here: only 5 of 18 winters from 1991 to 2020 recorded 0.1 inch or more at Arlington Six Flags, TX, 3.6 miles away, so there is no typical first-snow date to plan around.

ZIP 75050 is 4 miles from Arlington Six Flags, TX, which stands at 536 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 10 other ZIP codes share the station; its figures are presented in full for 76010 (Arlington). The 2023 USDA Plant Hardiness Zone Map lists ZIP 75050 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.