Frost Dates for 75644 — Gilmer, Texas

Half of springs at Gilmer 4 WNW, TX see their last 32°F night by March 26; only one in ten is past it by March 4, and one in ten still has one after April 16. Planting tender crops after April 4 leaves a 30% risk of a frost on them, after April 9 20%, and after April 16 10%. The 21 days between the even-odds date and the one-in-ten date is wider than at 50% 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 8 in half of years, as early as October 26 one year in ten, and holds off past November 25 one year in ten. A hard freeze of 28°F follows 11 days later, around November 19; in spring the one-in-ten date for 28°F is April 1, 15 days before the 32°F one. The freeze-free season lasts 229 days in a typical year, shorter than at 77% of the 339 Texas stations; it reaches 253 days one year in ten and falls short of 204 one year in ten. On average 54 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 14 days longer, to about April 9, and return around November 1. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 61%.

July is the warmest month at Gilmer 4 WNW, TX, averaging 93°F by day and 71°F at night; January is the coldest at 56°F and 33°F. A freezing night is all but certain in every month from November 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 89% of years and April still brings one in 38% of years.

Warmth for growing adds up to 5,554 growing degree days a year (base 50°F), fewer than at 87% of the 351 Texas stations. 39% of them (2,186) have built up by the end of June, and July adds the most, 978. Precipitation totals 48.1 inches a year, most in April (4.7") and least in August (3.0"); May to September bring 38% of it.

The nearest other station, Diana 2 W, TX, 10 miles east of Gilmer, has a last frost 16 days earlier (March 10), a first frost 7 days later (November 15), a season 22 days longer.

Measurable snow is rare here: only 10 of 22 winters from 1991 to 2020 recorded 0.1 inch or more at Gilmer 4 WNW, TX, 5.5 miles away, so there is no typical first-snow date to plan around.

ZIP 75644 is 6 miles from Gilmer 4 WNW, TX, which stands at 390 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 75644 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.