Onyx, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Onyx, a community in Kern County, California.
This Afternoon
78°F
Sunny
Sunny. High near 78, with temperatures falling to around 76 in the afternoon. West southwest wind 15 to 20 mph, with gusts as high as 30 mph.
7-day forecast for Onyx
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Sunny | 15 to 20 mph WSW | 0% |
| Tonight | 54°F | Clear | 5 to 15 mph N | 0% |
| Saturday | 85°F | Sunny | 0 to 15 mph W | 0% |
| Saturday Night | 58°F | Partly Cloudy | 0 to 10 mph N | 0% |
| Sunday | 85°F | Mostly Sunny | 5 to 15 mph E | 0% |
| Sunday Night | 61°F | Partly Cloudy | 0 to 15 mph W | 0% |
| Monday | 82°F | Mostly Sunny | 0 to 15 mph W | 8% |
| Monday Night | 58°F | Mostly Clear | 5 to 15 mph WNW | 8% |
| Tuesday | 84°F | Sunny | 5 to 15 mph WNW | 2% |
| Tuesday Night | 59°F | Mostly Clear | 0 to 15 mph NW | 1% |
| Wednesday | 87°F | Sunny | 5 to 15 mph ENE | 2% |
| Wednesday Night | 61°F | Mostly Clear | 5 to 15 mph NE | 2% |
| Thursday | 88°F | Sunny | 5 to 15 mph E | 2% |
| Thursday Night | 62°F | Mostly Clear | 5 to 15 mph WNW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Onyx (35.670, -118.227). Updated through the day.
Growing snapshot for Onyx
Last spring frost
Apr 5
First fall frost
Nov 3
Growing season
212 days
Hardiness zone
9a
More local growing data for Onyx: nearby ZIP 93283 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, S Lake Fs, Ca (5.2 mi from Onyx). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.