Frost dates for 92054 — Oceanside, CA
Frost is light and occasional here — typically a few cold nights around midwinter (about 8 a year). Cover tender plants when frost is forecast.
How Oceanside compares
- In a typical year, frost nights in Oceanside fall between December 11 and January 23. In 1 year in 10 the first frost comes as early as November 21, or the last frost as late as February 22.
- Nearby San Diego, CA, 54 km away, rarely gets frost, a reminder of how much elevation and distance from the coast matter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | December 22 |
| 50% (median) | January 23 |
| 10% (safe for tender plants) | February 22 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 21 |
| 50% (median) | December 11 |
| 90% (late) | January 15 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Gardening where frost is rare
Oceanside, CA only freezes on a few winter nights, so the usual "plant after the last frost" rule doesn't apply. Heat and rainfall decide the seasons instead:
- Cool-season crops (lettuce, broccoli, peas, carrots) grow best from fall through late winter.
- Warm-season crops (tomatoes, peppers, beans, squash) do best planted in late winter to spring, and again in late summer for a fall crop — midsummer heat can stop tomatoes setting fruit.
- Heat lovers (okra, sweet potatoes, melons) can be planted through spring and early summer.
About these dates
Based on 1991–2020 NOAA climate normals for the Oceanside Muni Ap, CA weather station, 2 km away (elevation 30 ft (9 m)).
ZIP codes in Oceanside: 92049 92051 92052 92054 92056 92057 92058
Frost dates near Oceanside
- San Luis Rey Jan 23 · Dec 11
- Camp Pendleton Jan 23 · Dec 11
- Carlsbad rare frost
- Vista Jan 30 · Jan 7
- Bonsall Jan 30 · Jan 7
- San Marcos Jan 2 · Dec 30
- Encinitas rare frost
- Fallbrook Feb 2 · Jan 30
Frequently asked questions
When is the last frost in Oceanside, CA?
The median last spring frost in Oceanside, CA is January 23. There is still about a 10% chance of frost after February 22, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Oceanside, CA?
The median first fall frost is December 11, with about a 10% chance of frost before November 21.
How long is the growing season in Oceanside, CA?
About 322 days between the median last spring frost and first fall frost.
What planting zone is Oceanside, CA?
Oceanside, CA is in USDA hardiness zone 10a.