Frost Dates for 78941 — Flatonia, Texas

Half of springs at Flatonia 4SE, TX see their last 32°F night by March 2; only one in ten is past it by February 4, and one in ten still has one after March 21. Planting tender crops after March 10 leaves a 30% risk of a frost on them, after March 15 20%, and after March 21 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 27 in half of years, as early as November 8 one year in ten, and holds off past December 18 one year in ten. A hard freeze of 28°F follows 12 days later, around December 9; in spring the one-in-ten date for 28°F is March 12, 9 days before the 32°F one. The freeze-free season lasts 271 days in a typical year, longer than at 71% of the 339 Texas stations; it reaches 305 days one year in ten and falls short of 245 one year in ten. On average 11 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 11 days longer, to about March 13, and return around November 15. Nights of 24°F, cold enough to damage hardier plants, come in 84% of winters and 16°F in 12%.

August is the warmest month at Flatonia 4SE, TX, averaging 95°F by day and 71°F at night; January is the coldest at 62°F and 40°F. A freezing night is all but certain in every month from December to 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 85% of years and March still brings one in 55% of years.

Warmth for growing adds up to 6,871 growing degree days a year (base 50°F), more than at 65% of the 351 Texas stations. 42% of them (2,882) have built up by the end of June, and August adds the most, 1,026. Precipitation totals 37.9 inches a year, most in May (4.4") and least in February (2.1"); May to September bring 44% of it.

The nearest other station, Smithville, TX, 20 miles north of Flatonia and 153 feet lower, has a last frost 10 days later (March 12), a first frost 8 days earlier (November 19), a season 20 days shorter.

Measurable snow is rare here: only 0 of 24 winters from 1991 to 2020 recorded 0.1 inch or more at Flatonia 4SE, TX, 7 miles away, so there is no typical first-snow date to plan around.

ZIP 78941 is 7 miles from Flatonia 4SE, TX, which stands at 470 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 78956 (Schulenburg). The 2023 USDA Plant Hardiness Zone Map lists ZIP 78941 in zone 9a, the band where the coldest night of the year averaged 20 to 25°F (-6.7 to -3.9°C) over 1991–2020; a zone describes winter lows, not frost dates.