Hourly Weather-La Mesa, CA. Current conditions at DW5256 La Mesa (D5256) Lat: 32.7663°NLon: 117.01335°WElev: 659ft. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the La Mesa area. Get the latest 7 Day weather for La Mesa, CA, US including weather news, video, warnings and interactive maps from the weather experts. 74 ° 41 ° 4. Mesa Extended Forecast with high and low temperatures. La Mesa Extended Forecast with high and low temperatures. Saturday, December 5 Red Flag Warning. °F. 80 ° 39 ° 2. 11 pm. Up to 90 days of daily highs, lows, and precipitation chances. 29. Check out our current live radar and weather forecasts for La Mesa, California to help plan your day Find the most current and reliable 7 day weather forecasts, storm alerts, reports and information for [city] with The Weather Network. Find the most current and reliable 14 day weather forecasts, storm alerts, reports and information for La Mesa, CA, US with The Weather Network. Want to know what the weather is now? 11:20 am PST sun mon tue wed thu fri sat. Hi/Low, RealFeel®, precip, radar, & everything you need to be ready for the day, commute, and weekend! La Mesa Weather Forecasts. 74 ° 35 ° 6. 75 ° 34 ° 5. as of 11:00 pm PST. 81 ° 39 ° 3. 77 ° 36 ° 30. °F. Last 2 weeks of weather Get the forecast for today, tonight & tomorrow's weather for La Mesa, NM. La Mesa, CA Monthly Weather. 81 ° 42 ° 1. Know what's coming with AccuWeather's extended daily forecasts for La Mesa, CA. Last 2 weeks of weather