Millbrae

What is the climate like in Millbrae?

The best time to visit Millbrae is typically April – November, with trip comfort peaking in September (8.1/10). Millbrae is warmest in September, when daily highs average 66°F (19°C), and coolest in February, when lows fall to about 49°F (9°C). The wettest month is typically January and the driest is June; the year sees roughly 22 in (556 mm) of precipitation.

• Best time to visitApril – November — comfort peaks in September (8.1/10)
• Warmest monthSeptember — average high 66°F (19°C)
• Coolest monthFebruary — average low 49°F (9°C)
• Wettest monthJanuary (4.5 in (114 mm))
• Driest monthJune (0.1 in (3 mm))
• Annual precipitation22 in (556 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromSan Francisco Intl AP, 3 km away (1945-2026)