Frost Dates for 93630 — Kerman, California

Half of springs at Madera, CA see their last 32°F night by February 18; only one in ten is past it by January 16, and one in ten still has one after March 18. Planting tender crops after February 28 leaves a 30% risk of a frost on them, after March 5 20%, and after March 18 10%. The 28 days between the even-odds date and the one-in-ten date is narrower than at 60% 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 10 one year in ten, and holds off past December 18 one year in ten. A hard freeze of 28°F follows 13 days later, around December 10; in spring the one-in-ten date for 28°F is February 19, 27 days before the 32°F one. The freeze-free season lasts 281 days in a typical year, longer than at 52% of the 219 California stations; it reaches 319 days one year in ten and falls short of 245 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 35 days longer, to about March 25, and return around November 11. A 24°F night is unusual: 45% of winters had one.

July is the warmest month at Madera, CA, averaging 96°F by day and 64°F at night; December is the coldest at 55°F and 36°F. 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 25% of years.

Warmth for growing adds up to 4,942 growing degree days a year (base 50°F), more than at 62% of the 283 California stations. 37% of them (1,851) have built up by the end of June, and July adds the most, 930. Precipitation totals 11.3 inches a year, most in January (2.1") and least in July (0.0"); May to September bring 7% of it.

The nearest other station, Madera Municipal Airport, CA, 18 miles north of Kerman, has a last frost 6 days earlier (February 12), a first frost 3 days later (November 30), a season 12 days longer.

Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Madera, CA, 16.4 miles away, so there is no typical first-snow date to plan around.

ZIP 93630 is 16 miles from Madera, CA, which stands at 270 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 93638 (Madera). The 2023 USDA Plant Hardiness Zone Map lists ZIP 93630 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.