Weather WorldBig Island Lake, CA Weather Forecast
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Big Island Lake Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
 |  | |  |  | |  |  | | | | |
| Mostly Cloudy | Partly Sunny | Mostly Cloudy | Sunny | Mostly Clear | Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear |
| Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 54°FLo: 12°C | Hi: 73°FHi: 23°C | Lo: 52°FLo: 11°C | Hi: 73°FHi: 23°C | Hi: 72°FHi: 22°C Lo: 52°FLo: 11°C | Hi: 72°FHi: 22°C Lo: 52°FLo: 11°C | Hi: 72°FHi: 22°C Lo: 52°FLo: 11°C | Hi: 72°FHi: 22°C Lo: 52°FLo: 11°C | Hi: 72°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 72°FHi: 22°C Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 641 PM PDT Thu Aug 20 2026 
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Big Island Lake Forecast Discussion
Issued: 1000 PM PDT Thu Aug 20 2026
Key Messages
1. Warmup continues today before trending back to seasonal averages.
2. Monsoonal moisture brings 5 to 15 percent chance of thunderstorms over the Sierra Nevada Friday into Saturday.
3. Breezy conditions take place over typical wind-prone areas including San Luis Reservoir, Lake Isabella and the Mojave Desert Slopes.
Discussion
... Today`s highs reached in the triple digits in many valley and desert locations. A modest lowering of temperatures is in store fo...