Frost Dates for 73006 — Apache, Oklahoma

Half of springs at Apache 4ENE Mesonet, OK see their last 32°F night by April 3; only one in ten is past it by March 16, and one in ten still has one after April 21. Planting tender crops after April 10 leaves a 30% risk of a frost on them, after April 15 20%, and after April 21 10%. The 18 days between the even-odds date and the one-in-ten date is wider than at 60% of the 114 Oklahoma stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 3 in half of years, as early as October 20 one year in ten, and holds off past November 18 one year in ten. A hard freeze of 28°F follows 9 days later, around November 12; in spring the one-in-ten date for 28°F is April 9, 12 days before the 32°F one. The freeze-free season lasts 213 days in a typical year, longer than at 59% of the 114 Oklahoma stations; it reaches 237 days one year in ten and falls short of 190 one year in ten. On average 78 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 15, and return around October 26. Severe cold of 16°F or below comes in 96% of winters, usually between December 21 and February 11.

July is the warmest month at Apache 4ENE Mesonet, OK, averaging 93°F by day and 70°F at night; January is the coldest at 50°F and 28°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 58% of years.

Warmth for growing adds up to 5,092 growing degree days a year (base 50°F), fewer than at 60% of the 114 Oklahoma stations. 38% of them (1,942) have built up by the end of June, and July adds the most, 978.

The nearest other station, Medicine Pk 3W Mesonet, OK, 15 miles southwest of Apache and 154 feet higher, has a last frost 13 days earlier (March 21), a first frost 9 days later (November 12), a season 21 days longer.

The first measurable snow (0.1 inch or more) in Apache usually arrives around December 25, and the last of the season around January 27. Those are the middle dates across the winters of 1991–2020 at Apache, OK, 1.6 miles away: half of years saw snow earlier, half later. Snow fell in 56% of those winters. The last 32°F night of spring typically comes 66 days after the last snow.

ZIP 73006 is 6 miles from Apache 4ENE Mesonet, OK, which stands at 1,443 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 73538 (Elgin). The 2023 USDA Plant Hardiness Zone Map lists ZIP 73006 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.