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Old Spanish Trail, CA Weather Forecast
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Old Spanish Trail Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | MONDAY |
 |  | | |  | | | | | | | |
| Partly Cloudy | Sunny | Partly Cloudy | Sunny | Mostly Clear | Sunny | Partly Cloudy | Sunny | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear |
| Lo: 70°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 96°FLo: 36°C | Hi: 92°FHi: 33°C | Lo: 97°FLo: 36°C | Hi: 93°FHi: 34°C | Lo: 98°FLo: 37°C | Hi: 91°FHi: 33°C | Lo: 97°FLo: 36°C | Hi: 90°FHi: 32°C Lo: 70°FLo: 21°C | Hi: 90°FHi: 32°C Lo: 70°FLo: 21°C | Hi: 90°FHi: 32°C Lo: 70°FLo: 21°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 300 PM PDT Mon Aug 17 2026 
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Old Spanish Trail Forecast Discussion
Issued: 425 PM PDT Mon Aug 17 2026
Key Messages
- Temperatures will peak on Wednesday and Thursday, with above- normal afternoon highs and near-record morning lows.
- Monsoon moisture increases late this week into the weekend, accompanied by increased shower and thunderstorm chances.
Discussion
...Through next weekend.
Broad ridging continues building westward across the Desert Southwest today, with increasing thicknesses and subsidence lending to our current warming and drying trend. Most locations will sta...