Barstow, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Barstow, a city in San Bernardino County, California.
Tonight
47°F
Clear
Clear, with a low around 47. West southwest wind 9 to 21 mph, with gusts as high as 30 mph.
7-day forecast for Barstow
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Clear | 9 to 21 mph WSW | 0% |
| Wednesday | 67°F | Sunny | 3 to 8 mph NW | 0% |
| Wednesday Night | 47°F | Mostly Clear | 5 mph SW | 0% |
| Thursday | 69°F | Mostly Sunny | 6 mph NNE | 0% |
| Thursday Night | 49°F | Mostly Clear | 6 mph SSE | 0% |
| Friday | 71°F | Sunny | 5 to 12 mph N | 0% |
| Friday Night | 50°F | Clear | 2 to 7 mph NE | 0% |
| Saturday | 73°F | Sunny | 5 to 14 mph ENE | 0% |
| Saturday Night | 51°F | Mostly Clear | 3 to 8 mph E | 0% |
| Sunday | 74°F | Sunny | 3 to 14 mph ENE | 0% |
| Sunday Night | 53°F | Partly Cloudy | 3 to 9 mph SE | 0% |
| Monday | 74°F | Mostly Sunny | 2 to 6 mph N | 0% |
| Monday Night | 53°F | Partly Cloudy | 5 mph SSW | 1% |
| Tuesday | 73°F | Mostly Sunny | 2 to 6 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Barstow (34.867, -117.043). Updated through the day.
Growing snapshot for Barstow
Last spring frost
Feb 22
First fall frost
Nov 23
Growing season
271 days
Hardiness zone
9a
More local growing data for Barstow: nearby ZIP 92311 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Barstow, Ca (5.2 mi from Barstow). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.