February Weather in South San Francisco, United States

Last updated: June 24, 2025

In South San Francisco, United States, the average temperature in February hovers around 11°C (52°F). Expect a minimum of 4°C (39°F) and a maximum of 20°C (69°F). This month also brings about 109 mm (4.3 in) of precipitation over 9 days, resulting in an average humidity of 82%.

February Temperature in South San Francisco

In February in South San Francisco, the average temperature is 11°C (52°F). Maximums can reach 20°C (69°F), and minimums can be as low as 4°C (39°F). It's a pleasant time to visit, perfect for outdoor activities and exploring the local sights.

February Weather in South San Francisco: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in South San Francisco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South San Francisco, February typically has an average temperature of 11°C (52°F), with highs reaching up to 20°C (69°F) and lows dropping to around 4°C (39°F).

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

February Precipitation in South San Francisco

In South San Francisco in February, the total precipitation amount is 109 mm (4.3 in) spread over 9 days.

February Precipitation Trends in South San Francisco

The chart displays monthly precipitation patterns in South San Francisco, 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 South San Francisco, February typically receives around 109 mm (4.3 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 South San Francisco

In South San Francisco in February, humidity is 82%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that seeps into your bones, making it essential to dress in layers and stay prepared for the moisture-laden air as you explore your surroundings.

February Average Humidity in South San Francisco

This chart illustrates the average monthly humidity levels in South San Francisco, 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 South San Francisco 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 South San Francisco

In South San Francisco 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 South San Francisco.

Maximum UV Index Levels in South San Francisco for February

The chart shows the monthly maximum UV Index (UVI) for South San Francisco 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 South San Francisco typically reaches 5, which falls under the moderate exposure category.

Data source: South San Francisco 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 South San Francisco Compares to Other Months

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

This table compares monthly weather conditions in South San Francisco, 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 (52°F)	106 mm (4.2 inches)	85%	moderate
February Weather	11°C (52°F)	109 mm (4.3 inches)	82%	moderate
March Weather	12°C (53°F)	78 mm (3.1 inches)	82%	very high
April Weather	13°C (55°F)	35 mm (1.4 inches)	79%	very high
May Weather	14°C (57°F)	20 mm (0.8 inches)	83%	very high
June Weather	15°C (60°F)	3 mm (0.1 inches)	84%	extreme
July Weather	15°C (60°F)	3 mm (0.1 inches)	87%	extreme
August Weather	16°C (61°F)	2 mm (0.1 inches)	87%	very high
September Weather	17°C (63°F)	2 mm (0.1 inches)	86%	very high
October Weather	16°C (60°F)	30 mm (1.2 inches)	80%	high
November Weather	13°C (56°F)	50 mm (2.0 inches)	79%	moderate
December Weather	11°C (52°F)	95 mm (3.7 inches)	79%	moderate