Frost Dates for 90028 — Los Angeles, California

In the 55% of winters that bring a 32°F night, half of springs at Burbank Valley Pump Plt, CA see their last 32°F night by January 2; only one in ten is past it by December 11, and one in ten still has one after January 31. Counting the winters with no freeze at all, the risk of a 32°F night after January 31 is under 5% and after January 2 27%. The 29 days between the even-odds date and the one-in-ten date is narrower than at 52% 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 26 in half of years, as early as December 5 one year in ten, and holds off past January 18 one year in ten. A hard freeze of 28°F is less common: it came in 3% of winters. The freeze-free season lasts 364 days in a typical year, the longest of the 219 California stations; it reaches 365 days one year in ten and falls short of 330 one year in ten. On average 1 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 34 days longer, to about February 5, and return around December 12. No night reached 24°F in 1991–2020.

August is the warmest month at Burbank Valley Pump Plt, CA, averaging 88°F by day and 63°F at night; December is the coldest at 68°F and 42°F. From February to November the chance of a 32°F night stays under 10% each month.

Warmth for growing adds up to 5,340 growing degree days a year (base 50°F), more than at 75% of the 283 California stations. 39% of them (2,061) have built up by the end of June, and August adds the most, 794. Precipitation totals 16.6 inches a year, most in February (4.5") and least in July (0.0"); May to September bring 4% of it.

The nearest other station, Los Angeles Dwtn Usc Campus, CA, 6 miles southeast of Los Angeles and 425 feet lower, has a 32°F night in 0% of winters against 55% here, and a coolest-month low 6°F warmer (48°F).

Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Burbank Valley Pump Plt, CA, 6.2 miles away, so there is no typical first-snow date to plan around.

ZIP 90028 is 6 miles from Burbank Valley Pump Plt, CA, which stands at 655 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 14 other ZIP codes share the station; its figures are presented in full for 91601 (North Hollywood). The 2023 USDA Plant Hardiness Zone Map lists ZIP 90028 in zone 10b, the band where the coldest night of the year averaged 35 to 40°F (1.7 to 4.4°C) over 1991–2020; a zone describes winter lows, not frost dates.