Stevenson Ranch, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Stevenson Ranch, a community in Los Angeles County, California.
Overnight
56°F
Clear
Clear, with a low around 56. North wind around 5 mph.
7-day forecast for Stevenson Ranch
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Clear | 5 mph N | 0% |
| Saturday | 87°F | Sunny | 5 to 10 mph SSW | 0% |
| Saturday Night | 60°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Sunday | 83°F | Partly Sunny | 5 to 10 mph S | 0% |
| Sunday Night | 57°F | Mostly Cloudy then Patchy Fog | 5 mph S | 1% |
| Monday | 78°F | Patchy Fog then Mostly Sunny | 5 to 10 mph S | 1% |
| Monday Night | 56°F | Mostly Clear | 0 to 10 mph W | 0% |
| Tuesday | 82°F | Sunny | 0 to 5 mph ENE | 0% |
| Tuesday Night | 59°F | Clear | 0 to 5 mph NNE | 0% |
| Wednesday | 91°F | Sunny | 0 to 5 mph SSE | 0% |
| Wednesday Night | 62°F | Clear | 0 to 5 mph N | 0% |
| Thursday | 91°F | Sunny | 0 to 5 mph S | 0% |
| Thursday Night | 62°F | Mostly Clear | 0 to 5 mph SW | 2% |
| Friday | 89°F | Sunny | 0 to 10 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Stevenson Ranch (34.388, -118.584). Updated through the day.
Growing snapshot for Stevenson Ranch
Last spring frost
Jan 8
First fall frost
Jan 1
Growing season
365 days
Hardiness zone
10a
More local growing data for Stevenson Ranch: nearby ZIP 91355 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Newhall 5Nw, Ca (1.5 mi from Stevenson Ranch). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.