Tomorrow's Weather Forecast - San Diego

Tomorrow's weather in San Diego. high 26°C (79°F), low 20°C (68°F). Foggy.

Tomorrow’s Outlook

Tomorrow brings a similar temperature to today. Expect pleasant, mostly clear skies with little chance of rain. Humidity stays high near 88%, so it will feel muggier and stickier than the temperature alone suggests. A light breeze near 12 km/h is expected. Sunrise is at 6:30 AM and sunset at 6:58 PM, for about 12h 28m of daylight.

Tomorrow
26°/ 20°
Today26° / 21°

Tomorrow’s Hourly Weather Outlook

Morning6 AM – Noon21°
Rain probability
1%
Wind speed
8 km/h
AfternoonNoon – 6 PM25°
Rain probability
1%
Wind speed
12 km/h
Evening6 PM – Midn21°
Rain probability
1%
Wind speed
10 km/h
NightMidn – 6 AM21°
Rain probability
1%
Wind speed
9 km/h

24-Hour Rain & Temperature Forecast

Tomorrow12 Sep
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Temperature · peaks at +26°C

Planning Advice for Tomorrow

Clothing
Light layers work well; a jacket for the evening.
Outdoor
Good conditions for outdoor activities.
Travel
Standard travel conditions expected.

Sunrise & Sunset

Sunrise
Dawn 6:00 AM
Total Daylight
Full day forecastSolar noon 12:44 PM
Sunset
Dusk 7:28 PM
vs today-2 min daylight
Sunrise shift1 min later
Sunset shift1 min earlier

5-Day Weather Forecast

Full 15-Day Forecast
Today11 Sep
Foggy
26°/ 21°
1%
Rain
6–19
Wind
Tomorrow12 Sep
Foggy
26°/ 20°
1%
Rain
3–12
Wind
Sun13 Sep
Overcast
25°/ 20°
3%
Rain
1–15
Wind
Mon14 Sep
Sunny
24°/ 21°
6–17
Wind
Tue15 Sep
Sunny
23°/ 20°
1%
Rain
6–15
Wind

Weather Insight

San Diego is forecast to reach a high of 26°C tomorrow, with an overnight low around 20°C. That's 3° below the long-term average high of 29°C for this time of year. Expect little chance of rain (1% probability) and a gentle breeze averaging 12 km/h. Air quality is currently Moderate (AQI 58), driven mainly by PM2.5 at 12 μg/m³.

Today vs Normal

26°C-3° below normal

The long-term average high for today is 29°C.

18 of the last 28 days with published data ran above normal.

That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.

2026-08-28: 33°C33°2026-08-29: 34°C34°2026-08-30: 31°C31°2026-08-31: 29°C29°2026-09-01: 29°C29°2026-09-02: 27°C27°2026-09-03: 27°C27°2026-09-04: 27°C27°2026-09-05: 30°C30°2026-09-06: 31°C31°2026-09-07: 34°C34°2026-09-08: 35°C35°

Red = above normal, blue = at or below · last 12 days

Air Quality

Air Quality
Moderate

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.