Frost Dates for 73007 — Arcadia, Oklahoma

Half of springs at Guthrie 5S, OK see their last 32°F night by April 10; only one in ten is past it by March 24, and one in ten still has one after April 30. Planting tender crops after April 18 leaves a 30% risk of a frost on them, after April 22 20%, and after April 30 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 October 28 in half of years, as early as October 14 one year in ten, and holds off past November 10 one year in ten. A hard freeze of 28°F follows 8 days later, around November 5; in spring the one-in-ten date for 28°F is April 17, 13 days before the 32°F one. The freeze-free season lasts 199 days in a typical year, shorter than at 86% of the 114 Oklahoma stations; it reaches 222 days one year in ten and falls short of 178 one year in ten. On average 87 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 22, and return around October 19. Severe cold of 16°F or below comes every winter, usually between December 7 and February 24.

July is the warmest month at Guthrie 5S, OK, averaging 93°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 75% of years.

Warmth for growing adds up to 4,979 growing degree days a year (base 50°F), fewer than at 75% of the 114 Oklahoma stations. 37% of them (1,848) have built up by the end of June, and July adds the most, 1,000. Precipitation totals 38.3 inches a year, most in June (5.3") and least in January (1.4"); May to September bring 54% of it.

The nearest other station, Spencer 2ENE Mesonet, OK, 10 miles south of Arcadia, has a last frost 8 days earlier (April 2), a first frost 8 days later (November 5), a season 18 days longer.

The first measurable snow (0.1 inch or more) in Arcadia usually arrives around December 13, and the last of the season around February 16. Those are the middle dates across the winters of 1991–2020 at Guthrie 5S, OK, 9.8 miles away: half of years saw snow earlier, half later. Snow fell in 96% of those winters. The last 32°F night of spring typically comes 53 days after the last snow.

ZIP 73007 is 10 miles from Guthrie 5S, OK, which stands at 1,110 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 73034 (Edmond). The 2023 USDA Plant Hardiness Zone Map lists ZIP 73007 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.