Frost Dates for 78045 — Laredo, Texas

In the 90% of winters that bring a 32°F night, half of springs at Laredo 2, TX see their last 32°F night by January 25; only one in ten is past it by December 25, and one in ten still has one after February 25. Counting the winters with no freeze at all, the risk of a 32°F night after February 25 is under 9% and after January 25 45%. The 31 days between the even-odds date and the one-in-ten date is wider than at 92% 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 December 17 in half of years, as early as November 23 one year in ten, and holds off past January 19 one year in ten. A hard freeze of 28°F follows 13 days later, around December 30; in spring the one-in-ten date for 28°F is February 11, 14 days before the 32°F one. The freeze-free season lasts 329 days in a typical year, longer than at 94% of the 339 Texas stations; it reaches 362 days one year in ten and falls short of 288 one year in ten. On average 5 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 19 days longer, to about February 13, and return around December 3. A 24°F night is unusual: 21% of winters had one.

August is the warmest month at Laredo 2, TX, averaging 101°F by day and 77°F at night; January is the coldest at 68°F and 47°F. From March to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 31% of years.

Warmth for growing adds up to 9,202 growing degree days a year (base 50°F), more than at 99% of the 351 Texas stations. 46% of them (4,190) have built up by the end of June, and August adds the most, 1,212. Precipitation totals 19.9 inches a year, most in September (3.9") and least in February (0.7"); May to September bring 60% of it.

The nearest other station, Laredo AFB, TX, 9 miles southeast of Laredo, has a last frost 5 days earlier (January 20), a first frost 8 days later (December 25), a season 15 days longer.

Measurable snow is rare here: only 2 of 25 winters from 1991 to 2020 recorded 0.1 inch or more at Laredo 2, TX, 6 miles away, so there is no typical first-snow date to plan around.

ZIP 78045 is 6 miles from Laredo 2, TX, which stands at 430 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 78045 in zone 9b, the band where the coldest night of the year averaged 25 to 30°F (-3.9 to -1.1°C) over 1991–2020; a zone describes winter lows, not frost dates.