Frost Dates for 76667 — Mexia, Texas

Half of springs at Mexia, TX see their last 32°F night by March 13; only one in ten is past it by February 21, and one in ten still has one after April 4. Planting tender crops after March 24 leaves a 30% risk of a frost on them, after March 29 20%, and after April 4 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 22 in half of years, as early as November 4 one year in ten, and holds off past December 10 one year in ten. A hard freeze of 28°F follows 12 days later, around December 4; in spring the one-in-ten date for 28°F is March 24, 11 days before the 32°F one. The freeze-free season lasts 251 days in a typical year, longer than at 53% of the 339 Texas stations; it reaches 279 days one year in ten and falls short of 223 one year in ten. On average 34 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 29, and return around November 10. Nights of 24°F, cold enough to damage hardier plants, come in 93% of winters and 16°F in 28%.

August is the warmest month at Mexia, TX, averaging 98°F by day and 73°F at night; January is the coldest at 60°F and 36°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 77% of years and April still brings one in 14% of years.

Warmth for growing adds up to 6,589 growing degree days a year (base 50°F), more than at 58% of the 351 Texas stations. 39% of them (2,590) have built up by the end of June, and August adds the most, 1,086.

The nearest other station, Fairfield 3W, TX, 17 miles east of Mexia, has a last frost 3 days later (March 16), a first frost 8 days earlier (November 14), a season 8 days shorter.

Measurable snow is rare here: only 1 of 16 winters from 1991 to 2020 recorded 0.1 inch or more at Mexia, TX, 4.2 miles away, so there is no typical first-snow date to plan around.

ZIP 76667 is 4 miles from Mexia, TX, which stands at 503 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 76667 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.