January Weather in Oakland, United States

Last updated: June 24, 2025

In Oakland, United States, the average temperature in January hovers around -4°C (24°F). During this month, temperatures can dip as low as -30°C (-22°F) or reach a maximum of 13°C (57°F). Expect about 30 mm (1.2 in) of precipitation spread over 4 days, with an average humidity level of 76%. Be prepared for chilly conditions and occasional rain!

January Temperature in Oakland

In January in Oakland, the average temperature is -4°C (24°F). Maximums can reach 13°C (57°F), while minimums can be as low as -30°C (-22°F). Travelers should be prepared for a wide range of temperatures and dress accordingly for outdoor activities.

January Weather in Oakland: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Oakland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oakland, January typically has an average temperature of -4°C (24°F), with highs reaching up to 13°C (57°F) and lows dropping to around -30°C (-22°F).

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

January Precipitation in Oakland

In Oakland in January, the precipitation amount is 30 mm (1.2 in) over the course of 4 days.

January Precipitation Trends in Oakland

The chart displays monthly precipitation patterns in Oakland, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Oakland, January typically receives around 30 mm (1.2 inches) of precipitation spread over approximately 4 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Oakland

In Oakland in January humidity is 76%. With an average temperature of -4°C (24°F), this humidity feels like a biting chill that cuts through layers of clothing, making travel quite uncomfortable and forcing you to constantly seek warmth and shelter.

January Average Humidity in Oakland

This chart illustrates the average monthly humidity levels in Oakland, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Oakland is approximately 76%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Oakland

In Oakland in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Oakland, you can check the information here.

Maximum UV Index Levels in Oakland for January

The chart shows the monthly maximum UV Index (UVI) for Oakland in January, 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 January, the maximum UV index in Oakland typically reaches 3, which falls under the moderate exposure category.

Data source: Oakland January 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 January Weather in Oakland Compares to Other Months

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

This table compares monthly weather conditions in Oakland, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (24°F)	30 mm (1.2 inches)	76%	moderate
February Weather	-4°C (24°F)	29 mm (1.2 inches)	80%	moderate
March Weather	4°C (40°F)	92 mm (3.6 inches)	73%	high
April Weather	9°C (49°F)	65 mm (2.6 inches)	74%	very high
May Weather	16°C (62°F)	152 mm (6.0 inches)	78%	very high
June Weather	24°C (75°F)	116 mm (4.6 inches)	82%	very high
July Weather	25°C (77°F)	71 mm (2.8 inches)	83%	very high
August Weather	23°C (74°F)	113 mm (4.4 inches)	80%	very high
September Weather	20°C (69°F)	78 mm (3.1 inches)	75%	very high
October Weather	11°C (52°F)	95 mm (3.7 inches)	75%	high
November Weather	4°C (39°F)	29 mm (1.1 inches)	82%	moderate
December Weather	-1°C (30°F)	44 mm (1.7 inches)	83%	low