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Porterville High School Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SUNDAY | MONDAY |
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| Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Sunny | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear |
| Lo: 69°FLo: 21°C | Hi: 99°FHi: 37°C | Lo: 69°FLo: 21°C | Hi: 99°FHi: 37°C | Lo: 69°FLo: 21°C | Hi: 100°FHi: 38°C | Lo: 69°FLo: 21°C | Hi: 99°FHi: 37°C Lo: 69°FLo: 21°C | Hi: 99°FHi: 37°C Lo: 69°FLo: 21°C | Hi: 99°FHi: 37°C Lo: 69°FLo: 21°C | Hi: 99°FHi: 37°C Lo: 69°FLo: 21°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 646 PM PDT Mon Aug 17 2026 
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Issued: 1059 AM PDT Mon Aug 17 2026
Key Messages
1. Temperatures will gradually warm this week and rise back to around 5 degrees above average by the middle of the week. The temperatures will back down Friday into the weekend.
2. Breezy conditions take place over typical wind-prone areas including San Luis Reservoir, Lake Isabella and the Mojave Desert Slopes through this week. Lake Wind Advisory through 8 pm tonight for Lake Isabella.
Discussion
... Seasonable temperatures continue today as California is...