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Rancho Bernardo, CA Weather Forecast
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Rancho Bernardo Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY |
 |  | | | | |  |  |  |  | | |
| Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers |
| Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 70°FLo: 21°C | Hi: 97°FHi: 36°C | Lo: 68°FLo: 20°C | Hi: 93°FHi: 34°C | Lo: 65°FLo: 18°C | Hi: 84°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 77°FHi: 25°C | Lo: 56°FLo: 13°C | Hi: 74°FHi: 23°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1250 PM PDT Tue Oct 06 2026 
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Issued: 1035 PM PDT Tue Oct 6 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
...UPDATED AVIATION DISCUSSION...
.SHORT TERM (Today through Friday)...
Today marked day five of the current heatwave. Widespread Major to Extreme HeatRisk will continue through Wednesday for the coasts and valleys, as heat stress compounds over time especially given the warm overnight lows. Several daily temperature records were broken. A small increase in ...