Santa Susana, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Santa Susana, a community in Los Angeles County, California.
This Afternoon
84°F
Sunny
Sunny, with a high near 84. West wind 5 to 10 mph.
7-day forecast for Santa Susana
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Sunny | 5 to 10 mph W | 0% |
| Tonight | 59°F | Mostly Cloudy | 0 to 5 mph E | 0% |
| Sunday | 82°F | Mostly Sunny | 5 to 10 mph S | 0% |
| Sunday Night | 58°F | Mostly Cloudy then Patchy Fog | 5 mph S | 1% |
| Monday | 78°F | Patchy Fog then Mostly Sunny | 5 to 10 mph SSW | 1% |
| Monday Night | 56°F | Partly Cloudy | 5 to 10 mph E | 0% |
| Tuesday | 79°F | Sunny | 5 to 10 mph SSW | 0% |
| Tuesday Night | 62°F | Mostly Clear | 0 to 10 mph NNE | 0% |
| Wednesday | 89°F | Sunny | 0 to 5 mph SSW | 0% |
| Wednesday Night | 65°F | Mostly Clear | 0 to 10 mph NNE | 0% |
| Thursday | 90°F | Sunny | 0 to 5 mph SSE | 0% |
| Thursday Night | 65°F | Mostly Clear | 0 to 5 mph SE | 0% |
| Friday | 88°F | Sunny | 0 to 10 mph S | 1% |
| Friday Night | 64°F | Mostly Clear | 0 to 10 mph NNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Santa Susana (34.259, -118.664). Updated through the day.
Growing snapshot for Santa Susana
Last spring frost
Jan 24
First fall frost
Dec 15
Growing season
329 days
Hardiness zone
10a
More local growing data for Santa Susana: nearby ZIP 91304 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Woodland Hills Pierce College, Ca (5.1 mi from Santa Susana). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.