January Weather in West Sacramento, United States

Last updated: June 24, 2025

In January, the average temperature in West Sacramento, United States hovers around 10°C (50°F). Weather can be quite variable, with minimums dipping to -2°C (29°F) and soaring to a maximum of 25°C (77°F). Expect approximately 122 mm (4.8 in) of precipitation spread over 9 days, accompanied by a high average humidity of 84%.

January Temperature in West Sacramento

In January in West Sacramento, the average temperature is 10°C (50°F). The maximum can reach 25°C (77°F), while the minimum can drop as low as -2°C (29°F). Be prepared for a range of weather conditions when traveling to West Sacramento during this time.

January Weather in West Sacramento: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in West Sacramento, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In West Sacramento, January typically has an average temperature of 10°C (50°F), with highs reaching up to 25°C (77°F) and lows dropping to around -2°C (29°F).

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

January Precipitation in West Sacramento

In West Sacramento in January, the precipitation amount is 122 mm (4.8 in) over a span of 9 days.

January Precipitation Trends in West Sacramento

The chart displays monthly precipitation patterns in West Sacramento, 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 West Sacramento, January typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 9 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 West Sacramento

In West Sacramento in January, humidity is 84%. With an average temperature of 10°C (50°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less comfortable and prompting travelers to seek refuge in cozy, warm cafes or indoor attractions.

January Average Humidity in West Sacramento

This chart illustrates the average monthly humidity levels in West Sacramento, 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 West Sacramento 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 West Sacramento

In West Sacramento 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 West Sacramento, you can check the information here.

Maximum UV Index Levels in West Sacramento for January

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

Data source: West Sacramento 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 West Sacramento Compares to Other Months

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

This table compares monthly weather conditions in West Sacramento, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	122 mm (4.8 inches)	84%	moderate
February Weather	11°C (53°F)	109 mm (4.3 inches)	84%	moderate
March Weather	13°C (56°F)	97 mm (3.8 inches)	83%	high
April Weather	17°C (63°F)	44 mm (1.7 inches)	81%	very high
May Weather	20°C (69°F)	20 mm (0.8 inches)	74%	very high
June Weather	24°C (76°F)	3 mm (0.1 inches)	64%	extreme
July Weather	25°C (77°F)	0 mm (0.0 inches)	44%	extreme
August Weather	25°C (76°F)	0 mm (0.0 inches)	36%	very high
September Weather	23°C (74°F)	2 mm (0.1 inches)	44%	very high
October Weather	19°C (66°F)	39 mm (1.5 inches)	65%	high
November Weather	13°C (56°F)	54 mm (2.1 inches)	84%	moderate
December Weather	9°C (49°F)	103 mm (4.1 inches)	83%	moderate