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Grimshaw Lake, CA Weather Forecast
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Grimshaw Lake Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY |
 |  | | | | | | | | | |
| Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Clear | Clear | Mostly Clear | Mostly Clear | Mostly Clear |
| Hi: 92°FHi: 33°C | Lo: 70°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 70°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 70°FLo: 21°C | Hi: 91°FHi: 33°C Lo: 70°FLo: 21°C | Hi: 91°FHi: 33°C Lo: 70°FLo: 21°C | Hi: 91°FHi: 33°C Lo: 68°FLo: 20°C | Hi: 91°FHi: 33°C Lo: 68°FLo: 20°C | Hi: 91°FHi: 33°C Lo: 68°FLo: 20°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 301 AM PDT Sat Aug 22 2026 
Grimshaw Lake Radar Loop
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Grimshaw Lake Weather Map
Grimshaw Lake Quick Facts
Grimshaw Lake Forecast Discussion
Issued: 459 AM PDT Sat Aug 22 2026
Key Messages
- Above normal temperatures continue through next week.
- Isolated storm chances linger into early next week, with best chances in northwestern Arizona and the southern Great Basin.
Discussion
...through Friday.
Ensemble guidance keeps the ridge of high pressure centered generally over southern NM through the forecast period. Any "cooling" that would otherwise result from subtle height falls will largely be offset by increased vertical mixing thanks to the southwest flow aloft. As a result,...