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Hourly Forecast
Daylight Hours
06:57
Sunrise
19:10
Sunset
Moon
Waxing Crescent
11:44
Moonrise
20:55
Moonset
Daily Forecast
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Weather in Millbrae today, September 15, 2026
Plan for bright conditions in Millbrae on September 15, 2026, though cloud cover thickens for a spell near 22:00. The day as a whole still leans toward sunshine. Expect a brighter morning, with limited cloud around 2% by 10:00. Conditions start on a settled note.
Expect highs of 24°C and cooler readings close to 14°C. Expect humidity between 46% and 81%, most humid near 20:00. Airflow remains manageable, reaching about 6.4 km/h around 18:00.
Later hours favour clearer intervals, as cloud stays near 33% around 22:00. The afternoon is the better half for outdoor time. Visibility stays near 16.1 km. Sunrise is at 06:57 and sunset at 19:10, giving 12 hours 13 minutes of sunlight today.
Overall, Millbrae on September 15, 2026 favours outdoor plans under mostly open skies, with a comfortable high near 24°C.
Frequently asked questions about weather in Millbrae
How warm does it get in Millbrae?
The warmest month in Millbrae is September, with average high temperatures of 19°C. The average temperature during this period is around 16°C.
How cold does it get in Millbrae?
The coldest month in Millbrae is February, with average low temperatures of 9°C. The average temperature during this period is around 11°C.
What is the wettest time of year in Millbrae?
The wettest month in Millbrae is January, with an average of 113mm of precipitation.
What is the driest time of year in Millbrae?
The driest month in Millbrae is July, with an average of 1mm of precipitation.
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