- Clothing
- Warm jacket and comfortable layers recommended.
Tomorrow's Weather Forecast - San Jose
Tomorrow's weather in San Jose. high 24°C (75°F), low 13°C (55°F). Overcast.
Tomorrow’s Outlook
Tomorrow will be 2°C cooler than today. Expect pleasant, mostly clear skies with little chance of rain. Humidity stays high near 71%, so it will feel muggier and stickier than the temperature alone suggests. A light breeze near 22 km/h is expected. Sunrise is at 6:47 AM and sunset at 7:19 PM, for about 12h 32m of daylight.
- Tomorrow
- 24°/ 13°
- Today26° / 16°
Tomorrow’s Hourly Weather Outlook
Morning6 AM – Noon16°
- Rain probability
- 0%
- Wind speed
- 12 km/h
AfternoonNoon – 6 PM23°
- Rain probability
- 1%
- Wind speed
- 22 km/h
Evening6 PM – Midn17°
- Rain probability
- 0%
- Wind speed
- 19 km/h
NightMidn – 6 AM15°
- Rain probability
- 0%
- Wind speed
- 5 km/h
24-Hour Rain & Temperature Forecast
Tomorrow12 Sep
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Planning Advice for Tomorrow
- Outdoor
- Good conditions for outdoor activities.
- Travel
- Standard travel conditions expected.
Sunrise & Sunset
Sunrise
Dawn 6:17 AMTotal Daylight
Full day forecastSolar noon 1:03 PM
Sunset
Dusk 7:49 PMvs today-3 min daylight
Sunrise shift1 min later
Sunset shift1 min earlier
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
San Jose is forecast to reach a high of 24°C tomorrow, with an overnight low around 13°C. That's 6° below the long-term average high of 30°C for this time of year. It continues a recent pattern — 11 of the last 28 days with published data have run cooler than normal. Expect little chance of rain (1% probability) and moderate breezes averaging 22 km/h. Air quality is currently Moderate (AQI 62), driven mainly by PM2.5 at 14 μg/m³.
Today vs Normal
26°C-4° below normal
The long-term average high for today is 30°C.
11 of the last 28 days with published data ran above normal.
It continues that pattern - today's forecast is also running below normal.
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.