Weather WorldPortsmouth Square, CA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Portsmouth Square Weather Forecast
| REST OF TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | TUESDAY |
 |  |  | | | | |  | | | |
| Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy |
| Hi: 66°FHi: 19°C | Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Lo: 59°FLo: 15°C | Hi: 66°FHi: 19°C Lo: 59°FLo: 15°C | Hi: 66°FHi: 19°C Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C Lo: 59°FLo: 15°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1102 AM PDT Wed Aug 19 2026 
Portsmouth Square Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Portsmouth Square Weather Map
Portsmouth Square Quick Facts
Portsmouth Square Forecast Discussion
Issued: 1034 AM PDT Wed Aug 19 2026
Key Messages
Updated at 1201 AM PDT Wed Aug 19 2026- Compressed marine layer today, increases Thursday into the weekend
- Near normal temperatures today followed by a gradual cooling into the weekend
- Elevations above about 1000 feet will have warm temperatures and RH values in the teens this morning into the afternoon
Aviation
... (18Z TAFS) Issued at 1027 AM PDT Wed Aug 19 2026
A mix of IFR/MVFR conditions this morning with high confidence of stratus to retreat to the coa...