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Mountain Pass Weather Forecast
| TONIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  | | | | | | | | | |
| Partly Cloudy | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Clear | Clear | Clear | Clear | Clear |
| Lo: 70°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 73°FLo: 23°C | Hi: 95°FHi: 35°C | Lo: 76°FLo: 24°C | Hi: 100°FHi: 38°C Lo: 78°FLo: 26°C | Hi: 100°FHi: 38°C Lo: 78°FLo: 26°C | Hi: 100°FHi: 38°C Lo: 78°FLo: 26°C | Hi: 100°FHi: 38°C Lo: 78°FLo: 26°C | Hi: 100°FHi: 38°C Lo: 78°FLo: 26°C | Hi: 96°FHi: 36°C Lo: 72°FLo: 22°C | Hi: 96°FHi: 36°C Lo: 72°FLo: 22°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 300 PM PDT Sun Sep 06 2026 
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Issued: 942 PM PDT Sun Sep 6 2026
Key Messages
- A band of showers with a chance of embedded thunderstorms continues along the I-15 and I-40 corridors this afternoon.
- Drier conditions expected for Labor Day, with low chances for isolated storm activity later this week.
Discussion
...through Saturday.
Our band of light to moderate rain has set up along the I-15 and I-40 corridors. Rain rates have generally been around 0.10" per hour or less, with rainfall totals across the area ranging from a trace to 0.33" as of 1230PM. Have seen only...