February Weather in Diamond Bar, United States

Last updated: June 24, 2025

In February, the average temperature in Diamond Bar, United States hovers around 12°C (55°F). You'll experience cool days, with temperatures ranging from a minimum of 1°C (34°F) to a pleasant maximum of 29°C (84°F). Be prepared for some rain, as 70 mm (2.8 in) of precipitation is expected over 6 days. With an average humidity of 79%, the air tends to feel quite moist, making it essential to dress appropriately for the weather!

February Temperature in Diamond Bar

In February in Diamond Bar, the average temperature is 12°C (55°F). Maximums can reach 29°C (84°F), and minimums can be as low as 1°C (34°F). It's advisable to pack layers to accommodate the varying temperatures during your travels.

February Weather in Diamond Bar: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Diamond Bar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Diamond Bar, February typically has an average temperature of 12°C (55°F), with highs reaching up to 29°C (84°F) and lows dropping to around 1°C (34°F).

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

February Precipitation in Diamond Bar

In Diamond Bar in February, the precipitation amount is 70 mm (2.8 in) over the course of 6 days.

February Precipitation Trends in Diamond Bar

The chart displays monthly precipitation patterns in Diamond Bar, 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 Diamond Bar, February typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 6 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 Diamond Bar

In Diamond Bar in February, humidity is 79%. With an average temperature of 12°C (55°F), this humidity feels like a damp chill that can make traveling uncomfortable; it can leave you feeling slightly clammy and require you to dress in layers to stay warm while navigating the thick, moisture-laden air.

February Average Humidity in Diamond Bar

This chart illustrates the average monthly humidity levels in Diamond Bar, 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 Diamond Bar is approximately 79%, 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 Diamond Bar

In Diamond Bar in February, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Diamond Bar, you can refer to this Hourly UV Index in Diamond Bar.

Maximum UV Index Levels in Diamond Bar for February

The chart shows the monthly maximum UV Index (UVI) for Diamond Bar 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 Diamond Bar typically reaches 6, which falls under the high exposure category.

Data source: Diamond Bar 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 Diamond Bar Compares to Other Months

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

This table compares monthly weather conditions in Diamond Bar, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	80 mm (3.1 inches)	74%	moderate
February Weather	12°C (55°F)	70 mm (2.8 inches)	79%	high
March Weather	14°C (57°F)	76 mm (3.0 inches)	75%	very high
April Weather	16°C (62°F)	27 mm (1.1 inches)	70%	very high
May Weather	18°C (64°F)	17 mm (0.7 inches)	70%	very high
June Weather	21°C (70°F)	1 mm (0.0 inches)	72%	extreme
July Weather	24°C (76°F)	1 mm (0.1 inches)	73%	extreme
August Weather	25°C (77°F)	2 mm (0.1 inches)	69%	very high
September Weather	23°C (74°F)	3 mm (0.1 inches)	68%	very high
October Weather	20°C (68°F)	12 mm (0.5 inches)	67%	high
November Weather	16°C (61°F)	26 mm (1.0 inches)	68%	moderate
December Weather	12°C (54°F)	79 mm (3.1 inches)	71%	moderate