Barstow, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Barstow, a city in San Bernardino County, California.

Tonight

58°F

Mostly Clear

Mostly clear. Low around 58, with temperatures rising to around 60 overnight. West southwest wind 6 to 13 mph, with gusts as high as 21 mph.

7-day forecast for Barstow

When	Temp	Forecast	Wind	Precip
Tonight	58°F	Mostly Clear	6 to 13 mph WSW	0%
Saturday	88°F	Sunny	7 mph WNW	0%
Saturday Night	62°F	Mostly Clear	0 to 3 mph SSW	0%
Sunday	91°F	Mostly Sunny	3 to 8 mph N	0%
Sunday Night	65°F	Partly Cloudy	8 mph SSW	1%
Monday	86°F	Sunny	7 to 10 mph W	9%
Monday Night	62°F	Mostly Clear	6 to 12 mph WSW	9%
Tuesday	88°F	Sunny	6 mph NW	1%
Tuesday Night	66°F	Clear	1 to 5 mph NNE	0%
Wednesday	91°F	Sunny	2 to 16 mph N	1%
Wednesday Night	68°F	Mostly Clear	2 to 10 mph S	1%
Thursday	93°F	Sunny	2 to 15 mph ENE	4%
Thursday Night	70°F	Mostly Clear	3 to 12 mph S	1%
Friday	92°F	Sunny	3 to 13 mph SE	6%

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

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 Sep 19, 2026.