Frost dates for 94622Oakland, CA
Frost occurs in about 3% of years near Oakland, based on NOAA 1991-2020 records for the Oakland Museum, 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 16 · Jan 5 · Feb 9 | Dec 7 · Dec 26 · Jan 23 | 360 days | 58% |
| Frost / freeze (32°F) | — | — | 365 days | 3% |
| Hard freeze (28°F) | — | — | 365 days | 0% |
Where these dates come from
ZIP code 94622 is matched to the NOAA station Oakland Museum, CA, 2.7 km away, at 30 ft elevation (131 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Oakland Museum, CA (used) | 30 ft | — | — |
| Oakland Metro Intl Ap, CA | 6 ft | Jan 7 | Dec 23 |
| Berkeley, CA | 310 ft | Jan 3 | Jan 1 |
| San Francisco Dwtn, CA | 150 ft | — | — |
Frost dates near Oakland
- Oakland, CA 94606 · last —, first —
- Piedmont, CA 94620 · last Jan 3, first Jan 1
- Alameda, CA 94501 · last —, first —
- Emeryville, CA 94662 · last —, first —
- Berkeley, CA 94705 · last Jan 3, first Jan 1
- Canyon, CA 94516 · last Jan 3, first Jan 1
- Orinda, CA 94563 · last Jan 3, first Jan 1
- Moraga, CA 94556 · last Jan 3, first Jan 1
Frequently asked questions
- When is the last frost in Oakland, CA?
- Frost occurs in about 3% of years at the nearest NOAA station (Oakland Museum, CA), so there is no reliable average last frost date.
- When is the first frost in Oakland, 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.