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Arrowhead Lake Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
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| Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Sunny | Partly Cloudy | Clear | Clear |
| Hi: 82°FHi: 28°C | Lo: 49°FLo: 9°C | Hi: 86°FHi: 30°C | Lo: 52°FLo: 11°C | Hi: 87°FHi: 31°C | Lo: 53°FLo: 12°C | Hi: 87°FHi: 31°C Lo: 54°FLo: 12°C | Hi: 87°FHi: 31°C Lo: 54°FLo: 12°C | Hi: 84°FHi: 29°C | Lo: 51°FLo: 11°C | Hi: 82°FHi: 28°C Lo: 49°FLo: 9°C | Hi: 82°FHi: 28°C Lo: 49°FLo: 9°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 231 AM PDT Mon Aug 17 2026 
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Arrowhead Lake Forecast Discussion
Issued: 1248 AM PDT Mon Aug 17 2026
Key Messages
- Dry and warm conditions will prevail through mid-week across the region.
- Afternoon winds increase the fire risk Monday for northeast CA and northwest NV.
- Increased chances for isolated showers and thunderstorms return this upcoming weekend.
Discussion
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The synoptic pattern features an upper-level ridge building over the Desert Southwest, maintaining a dry southwest flow aloft across the region. This will lead to generally clear to partly cloudy skies and...