Frost Dates for 79108 — Amarillo, Texas

Half of springs at Amarillo, TX see their last 32°F night by April 13; only one in ten is past it by March 29, and one in ten still has one after April 29. Planting tender crops after April 20 leaves a 30% risk of a frost on them, after April 25 20%, and after April 29 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 91% of the 339 Texas stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 27 in half of years, as early as October 14 one year in ten, and holds off past November 8 one year in ten. A hard freeze of 28°F follows 9 days later, around November 5; in spring the one-in-ten date for 28°F is April 19, 10 days before the 32°F one. The freeze-free season lasts 195 days in a typical year, shorter than at 96% of the 339 Texas stations; it reaches 217 days one year in ten and falls short of 176 one year in ten. On average 108 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 12 days longer, to about April 25, and return around October 18. Severe cold of 16°F or below comes every winter, usually between December 4 and February 20.

July is the warmest month at Amarillo, TX, averaging 93°F by day and 66°F at night; January is the coldest at 52°F and 25°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 82% of years.

Warmth for growing adds up to 4,554 growing degree days a year (base 50°F), fewer than at 95% of the 351 Texas stations. 38% of them (1,721) have built up by the end of June, and July adds the most, 919. Precipitation totals 19.9 inches a year, most in June (2.9") and least in February (0.5"); May to September bring 63% of it.

The nearest other station, Amarillo 7ENE, TX, 6 miles southeast of Amarillo, has a last frost 2 days later (April 15), a first frost 2 days later (October 29), a season 1 day longer.

The first measurable snow (0.1 inch or more) in Amarillo usually arrives around November 23, and the last of the season around March 25. Those are the middle dates across the winters of 1991–2020 at Amarillo, TX, 6.2 miles away: half of years saw snow earlier, half later. Snow fell in 97% of those winters. The last 32°F night of spring typically comes 19 days after the last snow.

ZIP 79108 is 6 miles from Amarillo, TX, which stands at 3,587 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 79108 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°C) over 1991–2020; a zone describes winter lows, not frost dates.