| NWS Forecast for: San Diego County Mountains Issued by: National Weather Service San Diego, CA Last Update: 1151 AM PDT Tue Aug 18 2026 |  |
| Tonight: Mostly clear. Lows 65 to 75. Areas of winds west 10 to 15 mph with gusts to 25 mph...becoming to 10 mph overnight. Wednesday: Mostly sunny in the morning...becoming partly cloudy. Highs 90 to 99. Light winds becoming west 10 mph in the afternoon. Wednesday Night: Partly cloudy in the evening...becoming mostly clear. Lows 66 to 76. Areas of winds west to 10 mph. Thursday: Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs 90 to 98. Areas of winds east to 10 mph becoming west 10 mph in the afternoon. Chance of measurable precipitation 20 percent. Thursday Night: Partly cloudy. Lows 66 to 75. Areas of winds west to 10 mph in the evening becoming light. Friday: Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs 90 to 99. Friday Night: Partly cloudy with a slight chance of showers in the evening, then mostly clear overnight. Lows 64 to 74. Saturday: Mostly sunny in the morning, then partly cloudy with a slight chance of showers in the afternoon. Highs 88 to 96. Saturday Night: Mostly clear with a slight chance of showers. Lows 63 to 73. Sunday: Mostly sunny in the morning...becoming partly cloudy. A slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs 87 to 95. Sunday Night: Partly cloudy with a slight chance of showers in the evening, then mostly clear overnight. Lows 63 to 73. Monday: Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs 86 to 95. Monday Night: Mostly clear. Lows 63 to 73. Tuesday: Mostly sunny. Highs 87 to 95. | |
| Zone Forecast: San Diego County Mountains | |
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