Frost Dates for 86351 — Sedona, Arizona

Half of springs at Sedona, AZ see their last 32°F night by April 1; only one in ten is past it by March 6, and one in ten still has one after April 19. Planting tender crops after April 10 leaves a 30% risk of a frost on them, after April 13 20%, and after April 19 10%. The 18 days between the even-odds date and the one-in-ten date is narrower than at 74% of the 98 Arizona stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 17 in half of years, as early as October 28 one year in ten, and holds off past December 3 one year in ten. A hard freeze of 28°F follows 10 days later, around November 27; in spring the one-in-ten date for 28°F is April 6, 13 days before the 32°F one. The freeze-free season lasts 229 days in a typical year, longer than at 50% of the 98 Arizona stations; it reaches 261 days one year in ten and falls short of 202 one year in ten. On average 57 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 16 days longer, to about April 17, and return around November 5. Nights of 24°F, cold enough to damage hardier plants, come in 99% of winters and 16°F in 25%.

July is the warmest month at Sedona, AZ, averaging 97°F by day and 68°F at night; December is the coldest at 58°F and 33°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 88% of years and April still brings one in 52% of years.

Warmth for growing adds up to 5,300 growing degree days a year (base 50°F), fewer than at 57% of the 102 Arizona stations. 37% of them (1,946) have built up by the end of June, and July adds the most, 1,000. Precipitation totals 17.1 inches a year, most in February (2.2") and least in June (0.2"); May to September bring 36% of it.

The nearest other station, Montezuma Castle Nm, AZ, 13 miles south of Sedona and 1,040 feet lower, has a last frost 15 days later (April 16), a first frost 18 days earlier (October 30), a season 33 days shorter.

Measurable snow is rare here: only 8 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Sedona, AZ, 7.8 miles away, so there is no typical first-snow date to plan around.

ZIP 86351 is 8 miles from Sedona, AZ, which stands at 4,220 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 86336 (Sedona). The 2023 USDA Plant Hardiness Zone Map lists ZIP 86351 in zone 8b, the band where the coldest night of the year averaged 15 to 20°F (-9.4 to -6.7°C) over 1991–2020; a zone describes winter lows, not frost dates.