Frost Dates for 79064 — Olton, Texas

Half of springs at Olton, TX see their last 32°F night by April 6; only one in ten is past it by March 22, and one in ten still has one after April 23. Planting tender crops after April 13 leaves a 30% risk of a frost on them, after April 18 20%, and after April 23 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 1 in half of years, as early as October 17 one year in ten, and holds off past November 13 one year in ten. A hard freeze of 28°F follows 8 days later, around November 9; in spring the one-in-ten date for 28°F is April 11, 12 days before the 32°F one. The freeze-free season lasts 206 days in a typical year, shorter than at 92% of the 339 Texas stations; it reaches 227 days one year in ten and falls short of 183 one year in ten. On average 109 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 13 days longer, to about April 19, and return around October 22. Severe cold of 16°F or below comes in 99% of winters, usually between December 13 and February 14.

July is the warmest month at Olton, TX, averaging 90°F by day and 66°F at night; January is the coldest at 53°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 70% of years.

Warmth for growing adds up to 4,429 growing degree days a year (base 50°F), fewer than at 97% of the 351 Texas stations. 39% of them (1,721) have built up by the end of June, and July adds the most, 876. Precipitation totals 19.0 inches a year, most in June (2.7") and least in January (0.6"); May to September bring 64% of it.

The nearest other station, Plainview Wtr Productn, TX, 22 miles east of Olton and 190 feet lower, has a last frost 5 days later (April 11), a first frost 3 days earlier (October 29), a season 6 days shorter.

The first measurable snow (0.1 inch or more) in Olton usually arrives around December 7, and the last of the season around February 14. Those are the middle dates across the winters of 1991–2020 at Olton, TX, 0.6 miles away: half of years saw snow earlier, half later. Snow fell in 96% of those winters. The last 32°F night of spring typically comes 51 days after the last snow.

ZIP 79064 is under a mile from Olton, TX, which stands at 3,640 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 79064 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.