Frost Dates for 74865 — Roff, Oklahoma

Half of springs at Fittstown 6SW Mesonet, OK see their last 32°F night by March 29; only one in ten is past it by March 8, and one in ten still has one after April 18. Planting tender crops after April 5 leaves a 30% risk of a frost on them, after April 9 20%, and after April 18 10%. The 20 days between the even-odds date and the one-in-ten date is wider than at 92% of the 114 Oklahoma stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 6 in half of years, as early as October 21 one year in ten, and holds off past November 22 one year in ten. A hard freeze of 28°F follows 10 days later, around November 16; in spring the one-in-ten date for 28°F is April 4, 14 days before the 32°F one. The freeze-free season lasts 222 days in a typical year, longer than at 83% of the 114 Oklahoma stations; it reaches 247 days one year in ten and falls short of 198 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 28. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 88%.

August is the warmest month at Fittstown 6SW Mesonet, OK, averaging 93°F by day and 69°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 42% of years.

Warmth for growing adds up to 5,078 growing degree days a year (base 50°F), fewer than at 61% of the 114 Oklahoma stations. 38% of them (1,912) have built up by the end of June, and August adds the most, 957.

The nearest other station, Chickasaw Nra, OK, 12 miles southwest of Roff, has a last frost 6 days later (April 4), a first frost 6 days earlier (October 31), a season 14 days shorter.

The first measurable snow (0.1 inch or more) in Roff usually arrives around January 2, and the last of the season around February 6. Those are the middle dates across the winters of 1991–2020 at Pontotoc 1N, OK, 13.4 miles away: half of years saw snow earlier, half later. Snow fell in 78% of those winters. The last 32°F night of spring typically comes 51 days after the last snow.

ZIP 74865 is 7 miles from Fittstown 6SW Mesonet, OK, which stands at 1,148 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 74871 (Stonewall). The 2023 USDA Plant Hardiness Zone Map lists ZIP 74865 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.