Frost Dates for 76380 — Seymour, Texas

Half of springs at Seymour 3NW, TX see their last 32°F night by March 30; only one in ten is past it by March 8, and one in ten still has one after April 18. Planting tender crops after April 5 leaves a 30% risk of a frost on them, after April 10 20%, and after April 18 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 6 in half of years, as early as October 20 one year in ten, and holds off past November 22 one year in ten. A hard freeze of 28°F follows 9 days later, around November 15; in spring the one-in-ten date for 28°F is April 3, 15 days before the 32°F one. The freeze-free season lasts 222 days in a typical year, shorter than at 84% of the 339 Texas stations; it reaches 247 days one year in ten and falls short of 198 one year in ten. On average 69 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 10 days longer, to about April 9, and return around October 29. Severe cold of 16°F or below comes in 90% of winters, usually between December 22 and January 30.

July is the warmest month at Seymour 3NW, TX, averaging 97°F by day and 72°F at night; January is the coldest at 55°F and 28°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 44% of years.

Warmth for growing adds up to 5,735 growing degree days a year (base 50°F), fewer than at 83% of the 351 Texas stations. 39% of them (2,226) have built up by the end of June, and July adds the most, 1,075. Precipitation totals 28.9 inches a year, most in May (3.8") and least in January (1.2"); May to September bring 57% of it.

The nearest other station, Lake Kemp, TX, 14 miles northeast of Seymour, has a last frost 10 days earlier (March 20), a first frost 7 days later (November 13), a season 16 days longer.

Measurable snow is rare here: only 7 of 16 winters from 1991 to 2020 recorded 0.1 inch or more at Seymour 3NW, TX, 3.3 miles away, so there is no typical first-snow date to plan around.

ZIP 76380 is 3 miles from Seymour 3NW, TX, which stands at 1,311 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 76380 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.