Frost Dates for 75925 — Alto, Texas

Half of springs at Rusk, TX see their last 32°F night by March 7; only one in ten is past it by February 15, and one in ten still has one after March 29. Planting tender crops after March 16 leaves a 30% risk of a frost on them, after March 22 20%, and after March 29 10%. The 22 days between the even-odds date and the one-in-ten date is wider than at 63% 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 25 in half of years, as early as November 5 one year in ten, and holds off past December 14 one year in ten. A hard freeze of 28°F follows 12 days later, around December 7; in spring the one-in-ten date for 28°F is March 15, 14 days before the 32°F one. The freeze-free season lasts 263 days in a typical year, longer than at 68% of the 339 Texas stations; it reaches 291 days one year in ten and falls short of 236 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 16 days longer, to about March 23, and return around November 13. Nights of 24°F, cold enough to damage hardier plants, come in 92% of winters and 16°F in 28%.

August is the warmest month at Rusk, TX, averaging 92°F by day and 72°F at night; January is the coldest at 56°F and 37°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 65% of years.

Warmth for growing adds up to 6,011 growing degree days a year (base 50°F), fewer than at 72% of the 351 Texas stations. 40% of them (2,411) have built up by the end of June, and August adds the most, 986. Precipitation totals 50.4 inches a year, most in December (4.9") and least in July (3.4"); May to September bring 39% of it.

The nearest other station, Lufkin 11 NW, TX, 17 miles southeast of Alto and 345 feet lower, has a last frost 12 days later (March 19), a first frost 15 days earlier (November 10), a season 24 days shorter.

Measurable snow is rare here: only 4 of 18 winters from 1991 to 2020 recorded 0.1 inch or more at Alto 5 SW, TX, 4.8 miles away, so there is no typical first-snow date to plan around.

ZIP 75925 is 14 miles from Rusk, TX, which stands at 695 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 75785 (Rusk). The 2023 USDA Plant Hardiness Zone Map lists ZIP 75925 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.