Frost dates for 90755Signal Hill, CA
Frost occurs in about 1% of years near Signal Hill, based on NOAA 1991-2020 records for the Long Beach Daugherty Fld, CA station.
Frost occurs in about 1% 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 17 · Jan 8 · Feb 8 | Dec 13 · Jan 1 · Jan 31 | 365 days | 40% |
| Frost / freeze (32°F) | — | — | 365 days | 1% |
| Hard freeze (28°F) | — | — | 365 days | 0% |
Where these dates come from
ZIP code 90755 is matched to the NOAA station Long Beach Daugherty Fld, CA, 2.2 km away, at 31 ft elevation (130 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Long Beach Daugherty Fld, CA (used) | 31 ft | — | — |
| Torrance Ap, CA | 90 ft | Jan 9 | Jan 5 |
| Fullerton Muni Ap, CA | 96 ft | — | — |
| Redondo Beach, CA | 142 ft | — | — |
Frost dates near Signal Hill
- Long Beach, CA 90822 · last —, first —
- Lakewood, CA 90712 · last —, first —
- Carson, CA 90895 · last —, first —
- Los Alamitos, CA 90721 · last —, first —
- Wilmington, CA 90748 · last Jan 9, first Jan 5
- Hawaiian Gardens, CA 90716 · last —, first —
- Seal Beach, CA 90740 · last —, first —
- Compton, CA 90221 · last —, first —
Frequently asked questions
- When is the last frost in Signal Hill, CA?
- Frost occurs in about 1% of years at the nearest NOAA station (Long Beach Daugherty Fld, CA), so there is no reliable average last frost date.
- When is the first frost in Signal Hill, CA?
- Frost occurs in about 1% 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.