Trona, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Trona, a community in San Bernardino County, California.
Overnight
77°F
Clear
Clear. Low around 77, with temperatures rising to around 79 overnight. East wind around 2 mph.
7-day forecast for Trona
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 77°F | Clear | 2 mph E | 0% |
| Tuesday | 111°F | Sunny | 1 to 12 mph SSE | 0% |
| Tuesday Night | 79°F | Clear | 2 to 14 mph S | 0% |
| Wednesday | 111°F | Sunny | 1 to 12 mph SSW | 0% |
| Wednesday Night | 80°F | Clear | 2 to 13 mph WSW | 0% |
| Thursday | 110°F | Sunny | 1 to 9 mph SSW | 0% |
| Thursday Night | 81°F | Clear | 2 to 9 mph SW | 0% |
| Friday | 110°F | Sunny | 1 to 8 mph SSW | 0% |
| Friday Night | 82°F | Clear | 2 to 7 mph SW | 0% |
| Saturday | 111°F | Sunny | 2 to 10 mph SSW | 1% |
| Saturday Night | 81°F | Clear | 2 to 10 mph SW | 1% |
| Sunday | 111°F | Sunny | 2 to 16 mph SSW | 0% |
| Sunday Night | 80°F | Mostly Clear | 3 to 17 mph SSW | 0% |
| Monday | 108°F | Sunny | 3 to 22 mph SSW | 3% |
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 Aug 4, 2026.