February Weather in Foster City, United States

Last updated: June 24, 2025

In February, the average temperature in Foster City, United States is a mild 11°C (53°F). Expect a comfortable range, with minimums dropping to 2°C (37°F) and maximums reaching up to 24°C (76°F). During this month, you'll encounter approximately 100 mm (3.9 in) of precipitation spread over 8 days, resulting in a high average humidity of 84%. Prepare for a blend of cool temps and refreshing rain!

February Temperature in Foster City

In February in Foster City, the average temperature is 11°C (53°F), with maximums reaching up to 24°C (76°F) and minimums dropping as low as 2°C (37°F). This mild weather makes Foster City an ideal destination for travelers looking to enjoy comfortable outdoor activities.

February Weather in Foster City: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Foster City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Foster City, February typically has an average temperature of 11°C (53°F), with highs reaching up to 24°C (76°F) and lows dropping to around 2°C (37°F).

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

February Precipitation in Foster City

In Foster City in February, the precipitation amount is 100 mm (3.9 in) spread over the course of 8 days.

February Precipitation Trends in Foster City

The chart displays monthly precipitation patterns in Foster City, 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 Foster City, February typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 8 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

February Humidity in Foster City

In Foster City in February, humidity is 84%. With an average temperature of 11°C (53°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a bit uncomfortable and requiring extra layers to stay warm while traveling.

February Average Humidity in Foster City

This chart illustrates the average monthly humidity levels in Foster City, 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 Foster City is approximately 84%, 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 Foster City

In Foster City 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 Foster City.

Maximum UV Index Levels in Foster City for February

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

Data source: Foster City 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 Foster City Compares to Other Months

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

This table compares monthly weather conditions in Foster City, 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)	105 mm (4.1 inches)	82%	moderate
February Weather	11°C (53°F)	100 mm (3.9 inches)	84%	moderate
March Weather	12°C (54°F)	86 mm (3.4 inches)	82%	very high
April Weather	13°C (57°F)	33 mm (1.3 inches)	78%	very high
May Weather	15°C (59°F)	24 mm (0.9 inches)	71%	very high
June Weather	17°C (63°F)	2 mm (0.1 inches)	64%	extreme
July Weather	17°C (63°F)	0 mm (0.0 inches)	58%	extreme
August Weather	18°C (65°F)	0 mm (0.0 inches)	54%	very high
September Weather	18°C (66°F)	2 mm (0.1 inches)	55%	very high
October Weather	17°C (63°F)	24 mm (0.9 inches)	62%	high
November Weather	13°C (56°F)	47 mm (1.9 inches)	78%	moderate
December Weather	11°C (52°F)	88 mm (3.5 inches)	80%	moderate