Frost Dates for 93212 — Corcoran, California

Half of springs at Corcoran Irrig Dist, CA see their last 32°F night by February 15; only one in ten is past it by January 17, and one in ten still has one after March 10. Planting tender crops after February 26 leaves a 30% risk of a frost on them, after March 3 20%, and after March 10 10%. The 23 days between the even-odds date and the one-in-ten date is narrower than at 78% 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 November 27 in half of years, as early as November 12 one year in ten, and holds off past December 13 one year in ten. A hard freeze of 28°F follows 11 days later, around December 8; in spring the one-in-ten date for 28°F is February 11, 27 days before the 32°F one. The freeze-free season lasts 285 days in a typical year, longer than at 56% of the 219 California stations; it reaches 320 days one year in ten and falls short of 254 one year in ten. On average 21 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 33 days longer, to about March 20, and return around November 12. A 24°F night is unusual: 49% of winters had one.

July is the warmest month at Corcoran Irrig Dist, CA, averaging 98°F by day and 64°F at night; December is the coldest at 57°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 66% of years and March still brings one in 23% of years.

Warmth for growing adds up to 5,369 growing degree days a year (base 50°F), more than at 76% of the 283 California stations. 38% of them (2,061) have built up by the end of June, and July adds the most, 970.

The nearest other station, Hanford 1 S, CA, 17 miles north of Corcoran, has a last frost 8 days earlier (February 7), a first frost 4 days later (December 1), a season 11 days longer.

Measurable snow is rare here: only 1 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Corcoran Irrig Dist, CA, 1.7 miles away, so there is no typical first-snow date to plan around.

ZIP 93212 is 2 miles from Corcoran Irrig Dist, CA, which stands at 200 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 93212 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.