Frost Dates for 74883 — Wetumka, Oklahoma

Half of springs at Holdenville 3ESE Mesonet, OK see their last 32°F night by March 29; only one in ten is past it by March 9, and one in ten still has one after April 14. Planting tender crops after April 4 leaves a 30% risk of a frost on them, after April 8 20%, and after April 14 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 November 5 in half of years, as early as October 21 one year in ten, and holds off past November 21 one year in ten. A hard freeze of 28°F follows 11 days later, around November 16; in spring the one-in-ten date for 28°F is April 2, 12 days before the 32°F one. The freeze-free season lasts 221 days in a typical year, longer than at 80% of the 114 Oklahoma stations; it reaches 246 days one year in ten and falls short of 199 one year in ten. On average 66 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 10, and return around October 27. Severe cold of 16°F or below comes in 92% of winters, usually between December 28 and February 6.

August is the warmest month at Holdenville 3ESE Mesonet, OK, averaging 92°F by day and 70°F at night; January is the coldest at 51°F and 30°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 43% of years.

Warmth for growing adds up to 5,183 growing degree days a year (base 50°F), more than at 59% of the 114 Oklahoma stations. 38% of them (1,988) have built up by the end of June, and August adds the most, 971.

The nearest other station, Okemah, OK, 14 miles north of Wetumka, has a last frost 5 days earlier (March 24), a first frost 4 days later (November 9), a season 8 days longer.

The first measurable snow (0.1 inch or more) in Wetumka usually arrives around December 25, and the last of the season around February 17. Those are the middle dates across the winters of 1991–2020 at Okemah, OK, 13.9 miles away: half of years saw snow earlier, half later. Snow fell in 90% of those winters. The last 32°F night of spring typically comes 40 days after the last snow.

ZIP 74883 is 13 miles from Holdenville 3ESE Mesonet, OK, which stands at 918 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 74848 (Holdenville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 74883 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.