January Weather in Stockton, United States

Last updated: June 24, 2025

In January, the average temperature in Stockton, United States hovers around -5°C (23°F). However, temperatures can fluctuate dramatically, reaching a minimum of -32°C (-25°F) and peaking at 11°C (52°F). Expect around 57 mm (2.2 in) of precipitation over 8 days, with average humidity levels high at 84%.

January Temperature in Stockton

In January in Stockton, the average temperature is -5°C (23°F), with maximums reaching up to 11°C (52°F) and minimums dropping as low as -32°C (-25°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable during their visit.

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

The chart illustrates January temperature patterns in Stockton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stockton, January typically has an average temperature of -5°C (23°F), with highs reaching up to 11°C (52°F) and lows dropping to around -32°C (-25°F).

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

January Precipitation in Stockton

In Stockton in January, the precipitation amount is 57 mm (2.2 in) over the course of 8 days.

January Precipitation Trends in Stockton

The chart displays monthly precipitation patterns in Stockton, 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 Stockton, January typically receives around 57 mm (2.2 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 Stockton

In Stockton in January, humidity is 84%. With an average temperature of -5°C (23°F), this humidity feels like an icy blanket wrapping around you, making the cold air bite even deeper and turning travel into a brisk, challenging adventure where each breath comes with a frosty reminder of the chill.

January Average Humidity in Stockton

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

In Stockton 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 Stockton, you can check the information here.

Maximum UV Index Levels in Stockton for January

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

Data source: Stockton 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 Stockton Compares to Other Months

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

This table compares monthly weather conditions in Stockton, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	57 mm (2.2 inches)	84%	moderate
February Weather	-4°C (24°F)	58 mm (2.3 inches)	85%	moderate
March Weather	3°C (38°F)	72 mm (2.8 inches)	84%	high
April Weather	9°C (48°F)	96 mm (3.8 inches)	83%	very high
May Weather	16°C (61°F)	145 mm (5.7 inches)	75%	very high
June Weather	22°C (72°F)	120 mm (4.7 inches)	79%	very high
July Weather	24°C (76°F)	84 mm (3.3 inches)	75%	very high
August Weather	22°C (72°F)	100 mm (3.9 inches)	69%	very high
September Weather	19°C (67°F)	117 mm (4.6 inches)	74%	very high
October Weather	11°C (52°F)	110 mm (4.3 inches)	79%	moderate
November Weather	3°C (37°F)	45 mm (1.8 inches)	88%	moderate
December Weather	-1°C (31°F)	48 mm (1.9 inches)	82%	low