Frost Dates for 95531 — Crescent City, California

Half of springs at Crescent City 3 NNW, CA see their last 32°F night by March 11; only one in ten is past it by January 31, and one in ten still has one after April 12. Planting tender crops after March 25 leaves a 30% risk of a frost on them, after March 31 20%, and after April 12 10%. The 32 days between the even-odds date and the one-in-ten date is wider than at 55% 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 23 in half of years, as early as November 1 one year in ten, and holds off past December 25 one year in ten. A hard freeze of 28°F follows 24 days later, around December 17; in spring the one-in-ten date for 28°F is March 7, 36 days before the 32°F one. The freeze-free season lasts 256 days in a typical year, shorter than at 65% of the 219 California stations; it reaches 307 days one year in ten and falls short of 216 one year in ten. On average 17 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 43 days longer, to about April 23, and return around November 1. A 24°F night is unusual: 18% of winters had one.

August is the warmest month at Crescent City 3 NNW, CA, averaging 66°F by day and 52°F at night; December is the coldest at 53°F and 39°F. From May to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 69% of years and March still brings one in 52% of years and April still brings one in 17% of years.

Warmth for growing adds up to 1,363 growing degree days a year (base 50°F), fewer than at 98% of the 283 California stations. 31% of them (425) have built up by the end of June, and August adds the most, 274. Precipitation totals 71.6 inches a year, most in December (13.4") and least in July (0.2"); May to September bring 10% of it.

The nearest other station, Brookings 2 SE, OR, 18 miles north of Crescent City, has a last frost 39 days earlier (January 31), a first frost 34 days later (December 27), a season 78 days longer.

Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Crescent City 3 NNW, CA, 2.6 miles away, so there is no typical first-snow date to plan around.

ZIP 95531 is 3 miles from Crescent City 3 NNW, CA, which stands at 43 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 95531 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.