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
89°F
Sunny
Sunny, with a high near 89. South wind around 6 mph.
7-day forecast for Trona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 89°F | Sunny | 6 mph S | 0% |
| Tonight | 67°F | Clear | 1 to 5 mph W | 0% |
| Saturday | 94°F | Sunny | 1 to 5 mph E | 0% |
| Saturday Night | 69°F | Mostly Clear | 0 to 5 mph WNW | 0% |
| Sunday | 95°F | Mostly Sunny | 1 to 6 mph SE | 0% |
| Sunday Night | 72°F | Mostly Cloudy | 1 to 6 mph WSW | 2% |
| Monday | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 8 mph S | 14% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 to 7 mph NW | 14% |
| Tuesday | 94°F | Sunny | 1 to 6 mph NE | 3% |
| Tuesday Night | 71°F | Clear | 2 to 6 mph NNE | 1% |
| Wednesday | 96°F | Sunny | 3 to 8 mph NE | 1% |
| Wednesday Night | 72°F | Mostly Clear | 5 to 8 mph N | 1% |
| Thursday | 98°F | Sunny | 3 to 7 mph E | 1% |
| Thursday Night | 73°F | Mostly Clear | 2 to 7 mph WSW | 1% |
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 Sep 19, 2026.