Frost Dates for 74056 — Pawhuska, Oklahoma

Half of springs at Pawhuska, OK see their last 32°F night by April 6; only one in ten is past it by March 21, and one in ten still has one after April 23. Planting tender crops after April 12 leaves a 30% risk of a frost on them, after April 17 20%, and after April 23 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 October 29 in half of years, as early as October 13 one year in ten, and holds off past November 11 one year in ten. A hard freeze of 28°F follows 8 days later, around November 6; in spring the one-in-ten date for 28°F is April 11, 12 days before the 32°F one. The freeze-free season lasts 204 days in a typical year, shorter than at 78% of the 114 Oklahoma stations; it reaches 226 days one year in ten and falls short of 180 one year in ten. On average 89 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 18, and return around October 19. Severe cold of 16°F or below comes every winter, usually between December 9 and February 23.

July is the warmest month at Pawhuska, OK, averaging 92°F by day and 71°F at night; January is the coldest at 49°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 67% of years.

Warmth for growing adds up to 4,986 growing degree days a year (base 50°F), fewer than at 73% of the 114 Oklahoma stations. 38% of them (1,902) have built up by the end of June, and July adds the most, 976. Precipitation totals 45.3 inches a year, most in May (6.1") and least in January (1.7"); May to September bring 55% of it.

The nearest other station, Barnsdall, OK, 16 miles southeast of Pawhuska, has a last frost 6 days earlier (March 31), a first frost 2 days later (October 31), a season 8 days longer.

The first measurable snow (0.1 inch or more) in Pawhuska usually arrives around December 30, and the last of the season around February 9. Those are the middle dates across the winters of 1991–2020 at Pawhuska, OK, 6.7 miles away: half of years saw snow earlier, half later. Snow fell in 84% of those winters. The last 32°F night of spring typically comes 56 days after the last snow.

ZIP 74056 is 7 miles from Pawhuska, OK, which stands at 835 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 74056 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°C) over 1991–2020; a zone describes winter lows, not frost dates.