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Barstow Service Center Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY |
 |  | | | | | | | | | |
| Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Clear | Mostly Clear |
| Lo: 77°FLo: 25°C | Hi: 104°FHi: 40°C | Lo: 77°FLo: 25°C | Hi: 105°FHi: 41°C | Lo: 80°FLo: 27°C | Hi: 106°FHi: 41°C Lo: 80°FLo: 27°C | Hi: 106°FHi: 41°C Lo: 80°FLo: 27°C | Hi: 105°FHi: 41°C | Hi: 104°FHi: 40°C Lo: 77°FLo: 25°C | Hi: 104°FHi: 40°C Lo: 77°FLo: 25°C | Hi: 104°FHi: 40°C Lo: 77°FLo: 25°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 300 PM PDT Sun Aug 23 2026 
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Barstow Service Center Forecast Discussion
Issued: 343 PM PDT Sun Aug 23 2026
Key Messages
- Hotter than normal temperatures will continue through the week.
- Chances for isolated showers and thunderstorms will linger through Monday for portions of our forecast area.
Discussion
...through Saturday.
Persistent ridging across the Desert Southwest will keep temperatures above normal through the week. Monday will be the "coolest" day of the week, with afternoon high temperatures topping out around 2 top 5 degrees above normal. Temperatures across the region will increase on Tuesday a...