Frost Dates for 79521 — Haskell, Texas

Half of springs at Haskell, TX see their last 32°F night by March 28; only one in ten is past it by March 9, and one in ten still has one after April 14. Planting tender crops after April 3 leaves a 30% risk of a frost on them, after April 7 20%, and after April 14 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 86% of the 339 Texas stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 7 in half of years, as early as October 25 one year in ten, and holds off past November 24 one year in ten. A hard freeze of 28°F follows 10 days later, around November 17; in spring the one-in-ten date for 28°F is April 3, 11 days before the 32°F one. The freeze-free season lasts 225 days in a typical year, shorter than at 81% of the 339 Texas stations; it reaches 250 days one year in ten and falls short of 201 one year in ten. On average 63 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 April 8, and return around October 31. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 86%.

July is the warmest month at Haskell, TX, averaging 95°F by day and 72°F at night; January is the coldest at 56°F and 29°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 40% of years.

Warmth for growing adds up to 5,711 growing degree days a year (base 50°F), fewer than at 84% of the 351 Texas stations. 40% of them (2,273) have built up by the end of June, and July adds the most, 1,037. Precipitation totals 27.1 inches a year, most in June (3.8") and least in January (1.2"); May to September bring 55% of it.

The nearest other station, Stamford 1, TX, 15 miles south of Haskell, has a last frost 5 days earlier (March 23), a first frost 4 days later (November 11), a season 9 days longer.

The first measurable snow (0.1 inch or more) in Haskell usually arrives around December 22, and the last of the season around January 18. Those are the middle dates across the winters of 1991–2020 at Haskell, TX, 2.4 miles away: half of years saw snow earlier, half later. Snow fell in 70% of those winters. The last 32°F night of spring typically comes 69 days after the last snow.

ZIP 79521 is 2 miles from Haskell, TX, which stands at 1,590 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 79521 in zone 8a, the band where the coldest night of the year averaged 10 to 15°F (-12.2 to -9.4°C) over 1991–2020; a zone describes winter lows, not frost dates.