Piedmont, CA frost dates
Last spring frostRaremost years have none
First fall frostRaremost years have none
Hardiness zone10aZone 10a
Gardening where frost is rare
Piedmont, CA rarely or never drops to freezing, so the usual "plant after the last frost" rule doesn't apply. Heat and rainfall decide the seasons instead:
- Cool-season crops (lettuce, broccoli, peas, carrots) grow best from fall through late winter.
- Warm-season crops (tomatoes, peppers, beans, squash) do best planted in late winter to spring, and again in late summer for a fall crop — midsummer heat can stop tomatoes setting fruit.
- Heat lovers (okra, sweet potatoes, melons) can be planted through spring and early summer.
How Piedmont compares
- Piedmont shares its weather station with Oakland, CA, 3 km away, so the two have the same frost dates.
About these dates
Based on 1991–2020 NOAA climate normals for the Oakland Museum, CA weather station, 4 km away (elevation 30 ft (9 m)).
Frost dates near Piedmont
- Oakland rare frost
- Emeryville rare frost
- Canyon Jan 3 · Jan 1
- Berkeley Jan 3 · Jan 1
- Orinda Jan 3 · Jan 1
- Alameda Jan 7 · Dec 23
- Albany Jan 3 · Jan 1
- El Cerrito Jan 3 · Jan 1
- Lafayette Jan 7 · Dec 19
- San Leandro Jan 2 · Dec 25
Frequently asked questions
When is the last frost in Piedmont, CA?
In most years Piedmont, CA has no frost at all. The nearest NOAA station averages 0 nights a year at or below 32°F — too few to calculate a typical frost date.