Trona, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Trona, a community in San Bernardino County, California.
This Afternoon
72°F
Sunny
Sunny. High near 72, with temperatures falling to around 70 in the afternoon. South southeast wind around 3 mph.
7-day forecast for Trona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Sunny | 3 mph SSE | 0% |
| Tonight | 51°F | Partly Cloudy | 5 mph NE | 0% |
| Thursday | 74°F | Mostly Sunny | 3 mph ENE | 0% |
| Thursday Night | 51°F | Mostly Clear | 5 mph N | 0% |
| Friday | 76°F | Sunny | 3 to 7 mph NNE | 0% |
| Friday Night | 51°F | Mostly Clear | 6 to 10 mph N | 0% |
| Saturday | 78°F | Sunny | 2 to 6 mph ENE | 0% |
| Saturday Night | 53°F | Clear | 3 mph N | 0% |
| Sunday | 79°F | Sunny | 3 mph E | 0% |
| Sunday Night | 54°F | Mostly Clear | 3 mph NNE | 0% |
| Monday | 78°F | Mostly Sunny | 0 to 3 mph ESE | 0% |
| Monday Night | 54°F | Partly Cloudy | 2 mph WNW | 0% |
| Tuesday | 78°F | Sunny | 0 to 3 mph S | 0% |
| Tuesday Night | 54°F | Mostly Clear | 2 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Trona (35.816, -117.347). Updated through the day.
Growing snapshot for Trona
Last spring frost
Feb 15
First fall frost
Nov 28
Growing season
285 days
Hardiness zone
9a
More local growing data for Trona: nearby ZIP 93562 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Trona, Ca (6.4 mi from Trona). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.