Frost Dates for 74884 — Wewoka, Oklahoma

Half of springs at Seminole, OK see their last 32°F night by April 5; only one in ten is past it by March 18, and one in ten still has one after April 22. Planting tender crops after April 12 leaves a 30% risk of a frost on them, after April 17 20%, and after April 22 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 41% of the 114 Oklahoma stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 1 in half of years, as early as October 18 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 9; in spring the one-in-ten date for 28°F is April 10, 12 days before the 32°F one. The freeze-free season lasts 210 days in a typical year, shorter than at 50% of the 114 Oklahoma stations; it reaches 234 days one year in ten and falls short of 189 one year in ten. On average 79 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 April 16, and return around October 24. Severe cold of 16°F or below comes every winter, usually between December 19 and February 14.

July is the warmest month at Seminole, OK, averaging 95°F by day and 71°F at night; January is the coldest at 52°F and 26°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 63% of years.

Warmth for growing adds up to 5,242 growing degree days a year (base 50°F), more than at 64% of the 114 Oklahoma stations. 38% of them (1,966) have built up by the end of June, and July adds the most, 1,017. Precipitation totals 43.2 inches a year, most in May (5.4") and least in January (1.9"); May to September bring 52% of it.

The nearest other station, Holdenville 3ESE Mesonet, OK, 11 miles southeast of Wewoka, has a last frost 7 days earlier (March 29), a first frost 4 days later (November 5), a season 11 days longer.

The first measurable snow (0.1 inch or more) in Wewoka usually arrives around December 30, and the last of the season around January 27. Those are the middle dates across the winters of 1991–2020 at Wewoka 3 SW, OK, 3 miles away: half of years saw snow earlier, half later. Snow fell in 76% of those winters. The last 32°F night of spring typically comes 68 days after the last snow.

ZIP 74884 is 9 miles from Seminole, OK, which stands at 924 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 74868 (Seminole). The 2023 USDA Plant Hardiness Zone Map lists ZIP 74884 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.