January Weather in Oakland, United States

Last updated: June 24, 2025

In January, the average temperature in Oakland, United States hovers around -6°C (22°F). During this month, temperatures can plummet to a chilling -26°C (-14°F), while occasionally reaching a milder 12°C (54°F). Expect approximately 82 mm (3.2 in) of precipitation over 8 days, and prepare for high humidity levels averaging 88%.

January Temperature in Oakland

In January in Oakland, the average temperature is -6°C (22°F), with maximums reaching 12°C (54°F) and minimums plummeting to as low as -26°C (-14°F). Be sure to dress warmly and prepare for significant temperature fluctuations while exploring this chilly destination.

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 -6°C (22°F), with highs reaching up to 12°C (54°F) and lows dropping to around -26°C (-14°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 total precipitation amount reached 82 mm (3.2 in) over the course of 8 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 82 mm (3.2 inches) of precipitation spread over approximately 8 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 88%. With an average temperature of -6°C (22°F), this humidity feels like an exhilarating chill that bites at your skin, making travel feel brisk and invigorating, yet requiring extra layers to stay comfortable as you explore the frosty landscape.

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 88%, 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 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Oakland, you can visit Hourly UV Index in Oakland.

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 2, which falls under the low 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	-6°C (22°F)	82 mm (3.2 inches)	88%	low
February Weather	-4°C (24°F)	82 mm (3.2 inches)	88%	moderate
March Weather	-1°C (31°F)	71 mm (2.8 inches)	85%	moderate
April Weather	6°C (43°F)	116 mm (4.6 inches)	81%	high
May Weather	13°C (55°F)	81 mm (3.2 inches)	76%	very high
June Weather	18°C (65°F)	68 mm (2.7 inches)	74%	very high
July Weather	21°C (70°F)	112 mm (4.4 inches)	74%	very high
August Weather	21°C (70°F)	74 mm (2.9 inches)	74%	very high
September Weather	17°C (62°F)	68 mm (2.7 inches)	77%	high
October Weather	11°C (51°F)	123 mm (4.8 inches)	82%	moderate
November Weather	3°C (37°F)	107 mm (4.2 inches)	85%	moderate
December Weather	-3°C (27°F)	109 mm (4.3 inches)	84%	low