Frost dates for 92705Santa 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 92705 is matched to the NOAA station Santa Ana Fire Stn, CA, 7 km away, at 135 ft elevation (59 ft lower 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 | — | — |
| Tustin Irvine Rch, CA | 235 ft | Jan 5 | Dec 25 |
| Irvine Rch, CA | 540 ft | — | — |
| Santa Ana John Wayne Ap, CA | 54 ft | — | — |
Frost dates near Santa Ana
- Santa Ana, CA 92711 · last —, first —
- Tustin, CA 92782 · last —, first —
- Orange, CA 92869 · last —, first —
- Irvine, CA 92602 · last —, first —
- Villa Park, CA 92861 · last —, first —
- East Irvine, CA 92650 · last —, first —
- Aliso Viejo, CA 92698 · last —, first —
- Anaheim, CA 92817 · 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.