Frost Dates for 77630 — Orange, Texas

Half of springs at Orange 9 N, TX see their last 32°F night by February 28; only one in ten is past it by January 29, and one in ten still has one after March 29. Planting tender crops after March 9 leaves a 30% risk of a frost on them, after March 17 20%, and after March 29 10%. The 29 days between the even-odds date and the one-in-ten date is wider than at 90% 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 23 in half of years, as early as November 4 one year in ten, and holds off past December 24 one year in ten. A hard freeze of 28°F follows 19 days later, around December 12; in spring the one-in-ten date for 28°F is March 9, 20 days before the 32°F one. The freeze-free season lasts 273 days in a typical year, longer than at 73% of the 339 Texas stations; it reaches 308 days one year in ten and falls short of 239 one year in ten. On average 19 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 16, and return around November 12. Nights of 24°F, cold enough to damage hardier plants, come in 63% of winters and 16°F in 5%.

July is the warmest month at Orange 9 N, TX, averaging 90°F by day and 73°F at night; January is the coldest at 61°F and 40°F. A freezing night is all but certain in January (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 73% of years and March still brings one in 42% of years.

Warmth for growing adds up to 6,448 growing degree days a year (base 50°F), more than at 53% of the 351 Texas stations. 42% of them (2,707) have built up by the end of June, and July adds the most, 969. Precipitation totals 64.4 inches a year, most in June (6.8") and least in March (3.5"); May to September bring 48% of it.

The nearest other station, Port Arthur SE Tx Airport, TX, 18 miles southwest of Orange, has a last frost 14 days earlier (February 14), a first frost 14 days later (December 7), a season 28 days longer.

Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Orange 9 N, TX, 9.7 miles away, so there is no typical first-snow date to plan around.

ZIP 77630 is 10 miles from Orange 9 N, TX, which stands at 18 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 77630 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.