Barstow, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Barstow, a city in San Bernardino County, California.
Overnight
74°F
Clear
Clear. Low around 74, with temperatures rising to around 77 overnight. West southwest wind around 12 mph.
7-day forecast for Barstow
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 74°F | Clear | 12 mph WSW | 0% |
| Tuesday | 108°F | Sunny | 8 to 17 mph WSW | 0% |
| Tuesday Night | 75°F | Clear | 9 to 18 mph SW | 0% |
| Wednesday | 108°F | Sunny | 7 to 10 mph W | 0% |
| Wednesday Night | 75°F | Mostly Clear | 8 to 17 mph WSW | 0% |
| Thursday | 108°F | Sunny | 8 mph W | 3% |
| Thursday Night | 76°F | Mostly Clear | 9 to 17 mph WSW | 3% |
| Friday | 108°F | Sunny | 9 mph W | 1% |
| Friday Night | 77°F | Mostly Clear | 9 to 16 mph WSW | 1% |
| Saturday | 108°F | Sunny | 12 mph WSW | 4% |
| Saturday Night | 77°F | Mostly Clear | 9 to 18 mph SW | 3% |
| Sunday | 107°F | Sunny | 8 to 18 mph WSW | 5% |
| Sunday Night | 75°F | Mostly Clear | 9 to 20 mph SW | 5% |
| Monday | 103°F | Slight Chance Showers And Thunderstorms | 8 to 22 mph WSW | 11% |
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
Nearby towns & communities
Adelanto
Apple Valley
Baker
Big Bear City
Big Bear Lake
Big River
Bloomington
Bluewater
Chino
Chino Hills
Colton
Crestline
Fontana
Fort Irwin
Grand Terrace
Hesperia
Highland
Homestead Valley
Homewood Canyon
Joshua Tree
Lake Arrowhead
Lenwood
Loma Linda
Lucerne Valley
Lytle Creek
Mentone
Montclair
Morongo Valley
Mountain View Acres
Muscoy
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 Aug 4, 2026.