February Weather in Millbrae, United States

Last updated: June 24, 2025

In Millbrae, United States, the average temperature in February hovers around 11°C (53°F), offering a mild climate. Temperatures can dip as low as 5°C (41°F) and soar up to 20°C (69°F). Expect a moderate level of rainfall, with an average precipitation of 101 mm (4.0 in) spread across 9 days. The atmosphere tends to be quite humid, showcasing an average humidity of 82%.

February Temperature in Millbrae

In February in Millbrae, the average temperature is 11°C (53°F), with a maximum reaching 20°C (69°F) and a minimum dipping as low as 5°C (41°F). It's a great time to visit for those who enjoy mild weather and outdoor activities.

February Weather in Millbrae: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Millbrae, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Millbrae, February typically has an average temperature of 11°C (53°F), with highs reaching up to 20°C (69°F) and lows dropping to around 5°C (41°F).

Data source: Temperature data for Millbrae generated using information from the Copernicus Climate Change Service.

February Precipitation in Millbrae

In Millbrae in February, the total precipitation amount is 101 mm (4.0 in), occurring over a span of 9 days.

February Precipitation Trends in Millbrae

The chart displays monthly precipitation patterns in Millbrae, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In Millbrae, February typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for February generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

February Humidity in Millbrae

In Millbrae in February humidity is 82%. With an average temperature of 11°C (53°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities uncomfortable and sticky, often requiring frequent breaks to escape the muggy atmosphere.

February Average Humidity in Millbrae

This chart illustrates the average monthly humidity levels in Millbrae, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in Millbrae is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for February generated using information from the Copernicus Climate Change Service.

February UV Index in Millbrae

In Millbrae in February, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Millbrae.

Maximum UV Index Levels in Millbrae for February

The chart shows the monthly maximum UV Index (UVI) for Millbrae in February, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In February, the maximum UV index in Millbrae typically reaches 5, which falls under the moderate exposure category.

Data source: Millbrae February UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How February Weather in Millbrae Compares to Other Months

Weather in Millbrae varies notably across the year, with each month offering distinct climate conditions. This page compares February’s weather to other months in Millbrae, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Millbrae, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (53°F)	102 mm (4.0 inches)	85%	moderate
February Weather	11°C (53°F)	101 mm (4.0 inches)	82%	moderate
March Weather	12°C (53°F)	77 mm (3.0 inches)	82%	very high
April Weather	12°C (55°F)	34 mm (1.3 inches)	79%	very high
May Weather	13°C (56°F)	22 mm (0.9 inches)	83%	very high
June Weather	15°C (58°F)	4 mm (0.2 inches)	84%	extreme
July Weather	15°C (59°F)	3 mm (0.1 inches)	87%	extreme
August Weather	16°C (61°F)	3 mm (0.1 inches)	87%	very high
September Weather	16°C (62°F)	3 mm (0.1 inches)	86%	very high
October Weather	15°C (60°F)	27 mm (1.1 inches)	80%	high
November Weather	13°C (56°F)	48 mm (1.9 inches)	79%	moderate
December Weather	12°C (53°F)	92 mm (3.6 inches)	79%	moderate