Frost dates for 92735Santa Ana, CA
Frost occurs in about 3% of years near Santa Ana, based on NOAA 1991-2020 records for the Santa Ana Fire Stn, CA station.
Frost occurs in about 3% of years. Frost-tender plants can usually grow year-round, but cover them if a rare cold snap is forecast.
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Dec 8 · Dec 31 · Feb 1 | Dec 6 · Dec 27 · Jan 27 | 365 days | 29% |
| Frost / freeze (32°F) | — | — | 365 days | 3% |
| Hard freeze (28°F) | — | — | 365 days | 0% |
Where these dates come from
ZIP code 92735 is matched to the NOAA station Santa Ana Fire Stn, CA, 3 km away, at 135 ft elevation (69 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Santa Ana Fire Stn, CA (used) | 135 ft | — | — |
| Santa Ana John Wayne Ap, CA | 54 ft | — | — |
| Tustin Irvine Rch, CA | 235 ft | Jan 5 | Dec 25 |
| Irvine Rch, CA | 540 ft | — | — |
Frost dates near Santa Ana
- Santa Ana, CA 92707 · last —, first —
- Tustin, CA 92780 · last —, first —
- Irvine, CA 92606 · last —, first —
- Aliso Viejo, CA 92698 · last —, first —
- Costa Mesa, CA 92626 · last —, first —
- Fountain Valley, CA 92728 · last —, first —
- Orange, CA 92856 · last —, first —
- Newport Beach, CA 92658 · last —, first —
Frequently asked questions
- When is the last frost in Santa Ana, CA?
- Frost occurs in about 3% of years at the nearest NOAA station (Santa Ana Fire Stn, CA), so there is no reliable average last frost date.
- When is the first frost in Santa Ana, CA?
- Frost occurs in about 3% of years at the nearest NOAA station.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.