Signal Hill, CA frost dates
Last spring frostRaremost years have none
First fall frostRaremost years have none
Hardiness zone10bZone 10b
Gardening where frost is rare
Signal Hill, 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 Signal Hill compares
- Signal Hill shares its weather station with Long Beach, CA, 3 km away, so the two have the same frost dates.
About these dates
Based on 1991–2020 NOAA climate normals for the Long Beach Daugherty Fld, CA weather station, 2 km away (elevation 30 ft (9 m)).
Frost dates near Signal Hill
- Long Beach rare frost
- Lakewood rare frost
- Wilmington Jan 9 · Jan 5
- Carson Jan 9 · Jan 5
- Hawaiian Gardens rare frost
- Los Alamitos rare frost
- Seal Beach rare frost
- Bellflower rare frost
- Compton rare frost
- Paramount rare frost
Frequently asked questions
When is the last frost in Signal Hill, CA?
In most years Signal Hill, 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.