Frost Dates for 74881 — Wellston, Oklahoma

Half of springs at Chandler, OK see their last 32°F night by April 7; only one in ten is past it by March 23, and one in ten still has one after April 23. Planting tender crops after April 14 leaves a 30% risk of a frost on them, after April 18 20%, and after April 23 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 61% of the 114 Oklahoma stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 30 in half of years, as early as October 15 one year in ten, and holds off past November 15 one year in ten. A hard freeze of 28°F follows 8 days later, around November 7; in spring the one-in-ten date for 28°F is April 12, 11 days before the 32°F one. The freeze-free season lasts 205 days in a typical year, shorter than at 76% of the 114 Oklahoma stations; it reaches 227 days one year in ten and falls short of 182 one year in ten. On average 80 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 April 19, and return around October 21. Severe cold of 16°F or below comes every winter, usually between December 9 and February 24.

July is the warmest month at Chandler, OK, averaging 95°F by day and 70°F at night; January is the coldest at 52°F and 25°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 70% of years.

Warmth for growing adds up to 5,164 growing degree days a year (base 50°F), more than at 55% of the 114 Oklahoma stations. 38% of them (1,955) have built up by the end of June, and July adds the most, 1,001. Precipitation totals 36.2 inches a year, most in June (4.8") and least in January (1.2"); May to September bring 53% of it.

The nearest other station, Meeker 5 W, OK, 14 miles south of Wellston, has a last frost 3 days earlier (April 4), the same first-frost date, a season 3 days longer.

The first measurable snow (0.1 inch or more) in Wellston usually arrives around January 7, and the last of the season around January 29. Those are the middle dates across the winters of 1991–2020 at Meeker 5 W, OK, 14.1 miles away: half of years saw snow earlier, half later. Snow fell in 95% of those winters. The last 32°F night of spring typically comes 68 days after the last snow.

ZIP 74881 is 11 miles from Chandler, OK, which stands at 958 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 74834 (Chandler). The 2023 USDA Plant Hardiness Zone Map lists ZIP 74881 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.