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Mount Vernon Park, CA Weather Forecast
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Mount Vernon Park Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY |
 |  | | | | | |  |  |  | | |
| Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Partly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers |
| Lo: 70°FLo: 21°C | Hi: 101°FHi: 38°C | Lo: 69°FLo: 21°C | Hi: 100°FHi: 38°C | Lo: 68°FLo: 20°C | Hi: 96°FHi: 36°C | Lo: 65°FLo: 18°C | Hi: 86°FHi: 30°C | Lo: 60°FLo: 16°C | Hi: 78°FHi: 26°C | Lo: 54°FLo: 12°C | Hi: 71°FHi: 22°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1250 PM PDT Tue Oct 06 2026 
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Issued: 451 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 marks 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. Today several calender day high records may be broken (updates on th...