Frost Dates for 93706 — Fresno, California

Half of springs at Fresno 5 NE, CA see their last 32°F night by January 30; only one in ten is past it by January 1, and one in ten still has one after March 4. Planting tender crops after February 10 leaves a 30% risk of a frost on them, after February 21 20%, and after March 4 10%. The 33 days between the even-odds date and the one-in-ten date is wider than at 61% of the 220 California 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 December 11 in half of years, as early as November 25 one year in ten, and holds off past January 8 one year in ten. A hard freeze of 28°F follows 13 days later, around December 24; in spring the one-in-ten date for 28°F is January 27, 36 days before the 32°F one. The freeze-free season lasts 319 days in a typical year, longer than at 74% of the 219 California stations; it reaches 352 days one year in ten and falls short of 277 one year in ten. On average 13 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 31 days longer, to about March 2, and return around November 27. A 24°F night is unusual: 12% of winters had one.

July is the warmest month at Fresno 5 NE, CA, averaging 102°F by day and 68°F at night; December is the coldest at 61°F and 38°F. From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 37% of years and March still brings one in 11% of years.

Warmth for growing adds up to 6,297 growing degree days a year (base 50°F), more than at 95% of the 283 California stations. 39% of them (2,443) have built up by the end of June, and July adds the most, 1,077.

The nearest other station, Fresno Yosemite International Airport, CA, 9 miles northeast of Fresno, has a last frost 16 days earlier (January 14), a first frost 3 days later (December 14), a season 18 days longer.

Measurable snow is rare here: only 1 of 30 winters from 1991 to 2020 recorded 0.1 inch or more at Fresno Yosemite International Airport, CA, 8.8 miles away, so there is no typical first-snow date to plan around.

ZIP 93706 is 9 miles from Fresno 5 NE, CA, which stands at 338 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 11 other ZIP codes share the station; its figures are presented in full for 93727 (Fresno). The 2023 USDA Plant Hardiness Zone Map lists ZIP 93706 in zone 9b, the band where the coldest night of the year averaged 25 to 30°F (-3.9 to -1.1°C) over 1991–2020; a zone describes winter lows, not frost dates.