Frost dates for 92178Coronado, CA
Frost is extremely rare here near Coronado, based on NOAA 1991-2020 records for the North Island Nas, CA station.
Frost is extremely rare here. 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 18 · Jan 3 · Jan 23 | Dec 14 · Jan 1 · Jan 23 | 365 days | 11% |
| Frost / freeze (32°F) | — | — | 365 days | 0% |
| Hard freeze (28°F) | — | — | 365 days | 0% |
Where these dates come from
ZIP code 92178 is matched to the NOAA station North Island Nas, CA, 2.2 km away, at 26 ft elevation (6 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| North Island Nas, CA (used) | 26 ft | — | — |
| San Diego Lindbergh Fld, CA | 15 ft | — | — |
| San Diego Seaworld, CA | 14 ft | — | — |
| Chula Vista, CA | 56 ft | — | — |
Frost dates near Coronado
- Coronado, CA 92118 · last —, first —
- San Diego, CA 92155 · last —, first —
- National City, CA 91951 · last —, first —
- Chula Vista, CA 91909 · last —, first —
- Imperial Beach, CA 91933 · last —, first —
- Bonita, CA 91908 · last —, first —
- Lemon Grove, CA 91945 · last —, first —
- La Mesa, CA 91943 · last Jan 6, first Dec 21
Frequently asked questions
- When is the last frost in Coronado, CA?
- Frost is extremely rare here at the nearest NOAA station (North Island Nas, CA), so there is no reliable average last frost date.
- When is the first frost in Coronado, CA?
- Frost is extremely rare here 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.