Frost Dates for 76901 — San Angelo, Texas

Half of springs at San Angelo WFO, TX see their last 32°F night by March 22; only one in ten is past it by March 3, and one in ten still has one after April 10. Planting tender crops after March 31 leaves a 30% risk of a frost on them, after April 4 20%, and after April 10 10%. The 19 days between the even-odds date and the one-in-ten date is narrower than at 63% of the 339 Texas stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 10 in half of years, as early as October 28 one year in ten, and holds off past November 28 one year in ten. A hard freeze of 28°F follows 11 days later, around November 21; in spring the one-in-ten date for 28°F is March 28, 13 days before the 32°F one. The freeze-free season lasts 233 days in a typical year, shorter than at 72% of the 339 Texas stations; it reaches 260 days one year in ten and falls short of 208 one year in ten. On average 60 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 5, and return around November 2. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 59%.

July is the warmest month at San Angelo WFO, TX, averaging 96°F by day and 71°F at night; January is the coldest at 60°F and 32°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 90% of years and April still brings one in 30% of years.

Warmth for growing adds up to 6,229 growing degree days a year (base 50°F), fewer than at 57% of the 351 Texas stations. 42% of them (2,607) have built up by the end of June, and July adds the most, 1,032. Precipitation totals 21.1 inches a year, most in May (3.2") and least in January (0.9"); May to September bring 55% of it.

The nearest other station, San Angelo, TX, 7 miles south of San Angelo, has a last frost 2 days earlier (March 20), the same first-frost date, a season 1 day shorter.

The first measurable snow (0.1 inch or more) in San Angelo usually arrives around January 10, and the last of the season around February 6. Those are the middle dates across the winters of 1991–2020 at San Angelo WFO, TX, 7.3 miles away: half of years saw snow earlier, half later. Snow fell in 65% of those winters. The last 32°F night of spring typically comes 44 days after the last snow.

ZIP 76901 is 7 miles from San Angelo WFO, TX, which stands at 1,890 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 76901 in zone 8a, the band where the coldest night of the year averaged 10 to 15°F (-12.2 to -9.4°C) over 1991–2020; a zone describes winter lows, not frost dates.