Frost Dates for 85348 — Salome, Arizona

Half of springs at Bouse, AZ see their last 32°F night by February 18; only one in ten is past it by January 24, and one in ten still has one after March 12. Planting tender crops after February 28 leaves a 30% risk of a frost on them, after March 4 20%, and after March 12 10%. The 22 days between the even-odds date and the one-in-ten date is wider than at 54% of the 99 Arizona stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.

In fall the first 32°F night comes by November 28 in half of years, as early as November 12 one year in ten, and holds off past December 15 one year in ten. A hard freeze of 28°F follows 11 days later, around December 9; in spring the one-in-ten date for 28°F is February 24, 16 days before the 32°F one. The freeze-free season lasts 284 days in a typical year, longer than at 66% of the 99 Arizona stations; it reaches 313 days one year in ten and falls short of 252 one year in ten. On average 26 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 20 days longer, to about March 10, and return around November 17. Nights of 24°F, cold enough to damage hardier plants, come in 67% of winters and 16°F in 2%.

July is the warmest month at Bouse, AZ, averaging 108°F by day and 78°F at night; December is the coldest at 64°F and 36°F. A freezing night is all but certain in every month from December to January (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 73% of years and March still brings one in 27% of years.

Warmth for growing adds up to 7,943 growing degree days a year (base 50°F), more than at 76% of the 103 Arizona stations. 40% of them (3,207) have built up by the end of June, and July adds the most, 1,342. Precipitation totals 5.6 inches a year, most in February (0.8") and least in June (0.0"); May to September bring 37% of it.

The nearest other station, Quartzsite, AZ, 35 miles west of Salome, has a last frost 21 days earlier (January 28), a first frost 8 days later (December 6), a season 31 days longer.

Measurable snow is rare here: only 0 of 21 winters from 1991 to 2020 recorded 0.1 inch or more at Bouse, AZ, 27.3 miles away, so there is no typical first-snow date to plan around.

ZIP 85348 is 27 miles from Bouse, AZ, which stands at 925 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. That is farther than 25 miles, so local frost can differ noticeably from these figures. The 2023 USDA Plant Hardiness Zone Map lists ZIP 85348 in zone 9a, the band where the coldest night of the year averaged 20 to 25°F (-6.7 to -3.9°C) over 1991–2020; a zone describes winter lows, not frost dates.