Signal Hill, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Signal Hill, a city in Los Angeles County, California.
This Afternoon
75°F
Mostly Sunny
Mostly sunny, with a high near 75. West wind 5 to 15 mph, with gusts as high as 20 mph.
7-day forecast for Signal Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Mostly Sunny | 5 to 15 mph W | 0% |
| Tonight | 57°F | Mostly Clear | 0 to 15 mph NNW | 0% |
| Wednesday | 76°F | Sunny | 0 to 5 mph NW | 0% |
| Wednesday Night | 59°F | Mostly Clear | 5 mph NNW | 0% |
| Thursday | 80°F | Sunny | 5 to 15 mph NNW | 0% |
| Thursday Night | 60°F | Mostly Clear | 5 to 15 mph NW | 0% |
| Friday | 84°F | Sunny | 5 to 10 mph NW | 0% |
| Friday Night | 62°F | Clear | 5 to 10 mph NNW | 0% |
| Saturday | 87°F | Sunny | 0 to 5 mph NNW | 0% |
| Saturday Night | 64°F | Mostly Clear | 5 to 10 mph NNW | 0% |
| Sunday | 87°F | Sunny | 0 to 5 mph NW | 0% |
| Sunday Night | 66°F | Partly Cloudy | 5 mph NNW | 0% |
| Monday | 83°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Monday Night | 64°F | Partly Cloudy | 0 to 5 mph SSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Signal Hill (33.803, -118.170). Updated through the day.
Growing snapshot for Signal Hill
Growing season
365 days
Hardiness zone
10b
More local growing data for Signal Hill: nearby ZIP 90755 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Long Beach Daugherty Fld, Ca (1.3 mi from Signal Hill). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.