Frost dates for Elsinore, California
Half of years have their last spring frost by January 28, but 1 year in 10 still frosts after February 27.
A frost date is really a percentile from 30 years of records at a nearby weather station: in about half of years a frost still comes after the median date. Both numbers are below, so you can choose the risk yourself.
The odds
Last spring frost
How often a frost still comes on or after each date.
- 1 year in 10
- February 27
- 1 year in 5
- February 19
- 3 years in 10
- February 10
- 2 years in 5
- February 4
- Half of years (the median)
- January 28
First fall freeze
How often the first freeze comes on or before each date.
- 1 year in 10
- December 1
- 1 year in 5
- December 6
- 3 years in 10
- December 10
- 2 years in 5
- December 13
- Half of years (the median)
- December 18
- Growing season
- about 329 days
- Hardiness zones nearby
- 10a, 10b, 9b
- Summer days
- a usual high of about 35 °C95 °F
- Lettuce and spinach run to seed
- April to September, in hot, long days (how we know)
Summer and rain
A growing garden needs about 25 mm1 in of water a week, rain and watering together. Here is what a normal month brings.
- Nearly every drop is yours
- April to November: rain brings less than a quarter of the water a growing garden needs, about 25 mm1 in a week (how we know)
Month by month
- January
- high ~19 °C66 °F · low ~6 °C42 °F · rain ~75 mm3 in
- February
- high ~20 °C67 °F · low ~6 °C43 °F · rain ~72 mm2.9 in
- March
- high ~22 °C71 °F · low ~8 °C46 °F · rain ~38 mm1.5 in
- April
- high ~25 °C76 °F · low ~9 °C49 °F · rain ~14 mm0.5 in
- May
- high ~28 °C82 °F · low ~12 °C54 °F · rain ~5.3 mm0.2 in
- June
- high ~32 °C90 °F · low ~15 °C58 °F · rain ~1.8 mm0.07 in
- July
- high ~36 °C96 °F · low ~18 °C64 °F · rain ~4.6 mm0.2 in
- August
- high ~37 °C98 °F · low ~18 °C65 °F · rain ~1.5 mm0.06 in
- September
- high ~34 °C93 °F · low ~16 °C61 °F · rain ~4.3 mm0.2 in
- October
- high ~28 °C83 °F · low ~12 °C54 °F · rain ~13 mm0.5 in
- November
- high ~23 °C73 °F · low ~8 °C46 °F · rain ~15 mm0.6 in
- December
- high ~18 °C65 °F · low ~5 °C40 °F · rain ~51 mm2 in
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, the Elsinore station (listed by NOAA as Elsinore, USC00042805), at 33.69, -117.35. These are that station’s own records, unshifted. The further your garden is from it, the less exactly they describe your ground. The planner finds the nearest station to your garden and lowers its confidence with distance, so no number is presented as if it were measured in your garden.
Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a few hundred feet away does not. No table can know that about your garden. A few seasons of your own logged frosts can.
ZIP codes nearest this station
92530, 92532, 92562, 92570, 92571, 92584, 92585, 92586, 92587, 92595, 92678, 92883.
Nearby stations
The nearest stations and how their last-frost dates compare. Together they show how frost varies across your area.
- Tustin Irvine Ranch, CA, frost is rare
- Santa Ana Fire Stn, CA, frost is rare
- Anaheim, CA, frost is rare
- Vista, CA, frost is rare
- Fullerton Municipal Airport, CA, frost is rare
- Carlsbad Palomar Airport, CA, frost is rare
Other stations in California.
- Lake Arrowhead, CA, last frost by May 5
- Long Beach Daugherty Field, CA, frost is rare
- Wrightwood, CA, last frost by May 16
- Los Angeles Dwtn Usc Campus, CA, frost is rare
- Torrance Airport, CA, frost is rare
- Hawthorne Municipal Airport, CA, frost is rare
- San Diego Montgomery Field, CA, frost is rare
- Avalon Catalina Airport, CA, frost is rare
When do I plant? · Where the dates come from
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