Weather World
City of La Mesa, CALa Mesa, CA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
La Mesa Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  | | | | |  | |  |  |  |
| Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of Showers | Chance of T-Storm |
| Lo: 61°FLo: 16°C | Hi: 87°FHi: 31°C | Lo: 60°FLo: 16°C | Hi: 86°FHi: 30°C | Lo: 58°FLo: 14°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C | Lo: 63°FLo: 17°C | Hi: 86°FHi: 30°C | Lo: 67°FLo: 19°C | Hi: 88°FHi: 31°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1216 PM PDT Mon Aug 31 2026 
La Mesa Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
La Mesa Weather Map
La Mesa Quick Facts
La Mesa Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 458 PM PDT Mon Aug 31 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
...UPDATED AVIATION DISCUSSION...
Today through Wednesday...
Current satellite and 500mb analysis reveals the upper ridge remains in control across the southeastern US with weak southwesterly flow aloft across southern California. The further displacement of the upper ridge allows for the continuation of the cooling trend observed through the last few days. ...