Frost Dates for 75432 — Cooper, Texas

Half of springs at Cooper Dam, TX see their last 32°F night by March 18; only one in ten is past it by March 1, and one in ten still has one after April 1. Planting tender crops after March 24 leaves a 30% risk of a frost on them, after March 28 20%, and after April 1 10%. The 14 days between the even-odds date and the one-in-ten date is narrower than at 96% of the 339 Texas stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 13 in half of years, as early as October 30 one year in ten, and holds off past December 1 one year in ten. A hard freeze of 28°F follows 13 days later, around November 26; in spring the one-in-ten date for 28°F is March 23, 9 days before the 32°F one. The freeze-free season lasts 241 days in a typical year, shorter than at 60% of the 339 Texas stations; it reaches 266 days one year in ten and falls short of 218 one year in ten. On average 45 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 March 30, and return around November 4. Nights of 24°F, cold enough to damage hardier plants, come in 99% of winters and 16°F in 57%.

July is the warmest month at Cooper Dam, TX, averaging 94°F by day and 74°F at night; January is the coldest at 54°F and 34°F. A freezing night is all but certain in every month from December 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 88% of years and April still brings one in 11% of years.

Warmth for growing adds up to 6,015 growing degree days a year (base 50°F), fewer than at 72% of the 351 Texas stations. 39% of them (2,357) have built up by the end of June, and July adds the most, 1,046. Precipitation totals 49.4 inches a year, most in October (5.8") and least in August (3.0"); May to September bring 38% of it.

The nearest other station, Sulphur Springs, TX, 16 miles south of Cooper, has a last frost 3 days earlier (March 15), a first frost 1 day later (November 14), a season 4 days longer.

Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Sulphur Springs, TX, 16.2 miles away, so there is no typical first-snow date to plan around.

ZIP 75432 is 6 miles from Cooper Dam, TX, which stands at 463 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 75432 in zone 8b, the band where the coldest night of the year averaged 15 to 20°F (-9.4 to -6.7°C) over 1991–2020; a zone describes winter lows, not frost dates.