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Hourly Forecast
Daylight Hours
06:39
Sunrise
18:51
Sunset
Moon
Waxing Crescent
11:14
Moonrise
20:46
Moonset
Daily Forecast
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Air Quality Data Available
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UV Index
Humidity
Weather in Aliso Viejo today, September 15, 2026
Expect a muted, overcast feel in Aliso Viejo on September 15, 2026 as cloud persists. Brighter breaks, if they arrive, should stay brief. Cloud leads the morning, peaking close to 100% near 06:00. Sunshine has little room until later in the day.
The temperature range runs from about 19°C up to 23°C. Moisture in the air spans 74%-90%, with the highest values around 07:00. Airflow remains manageable, reaching about 4.2 km/h around 15:00.
Through the afternoon cloud remains the main feature, with cover near 100% around 12:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 15.0 km, briefly nearer 13.4 km. Sunrise is at 06:39 and sunset at 18:51, giving 12 hours 11 minutes of sunlight today.
The practical takeaway for Aliso Viejo on September 15, 2026 is a cloudy day that stays usable, just not particularly bright, around 23°C.
Frequently asked questions about weather in Aliso Viejo
How warm does it get in Aliso Viejo?
The warmest month in Aliso Viejo is August, with average high temperatures of 24°C. The average temperature during this period is around 22°C.
How cold does it get in Aliso Viejo?
The coldest month in Aliso Viejo is February, with average low temperatures of 11°C. The average temperature during this period is around 14°C.
What is the wettest time of year in Aliso Viejo?
The wettest month in Aliso Viejo is January, with an average of 70mm of precipitation.
What is the driest time of year in Aliso Viejo?
The driest month in Aliso Viejo is July, with an average of 1mm of precipitation.
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