January Weather in South Yuba City, United States

Last updated: June 24, 2025

In January, the average temperature in South Yuba City, United States hovers around 10°C (51°F). Expect a minimum of -1°C (30°F) and a maximum of 25°C (78°F), making for quite the temperature range. Be prepared for some wet days, as 111 mm (4.4 in) of precipitation is expected over 9 days, and you'll likely feel the humidity at around 84%.

January Temperature in South Yuba City

In January in South Yuba City, the average temperature is 10°C (51°F). The maximum can reach 25°C (78°F), and the minimum can be as low as -1°C (30°F). It's advisable to pack layers to accommodate the varying temperatures, ensuring a comfortable trip no matter the weather.

January Weather in South Yuba City: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in South Yuba City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Yuba City, January typically has an average temperature of 10°C (51°F), with highs reaching up to 25°C (78°F) and lows dropping to around -1°C (30°F).

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

January Precipitation in South Yuba City

In South Yuba City in January, the precipitation amount is 111 mm (4.4 in) over the course of 9 days.

January Precipitation Trends in South Yuba City

The chart displays monthly precipitation patterns in South Yuba City, 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 South Yuba City, January typically receives around 111 mm (4.4 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 South Yuba City

In South Yuba City in January humidity is 84%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill enveloping you, making even short distances feel burdensome and leaving you longing for a cozy indoor refuge while exploring the area.

January Average Humidity in South Yuba City

This chart illustrates the average monthly humidity levels in South Yuba City, 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 South Yuba City 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 South Yuba City

In South Yuba City 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 South Yuba City, you can check the information here.

Maximum UV Index Levels in South Yuba City for January

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

Data source: South Yuba City 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 South Yuba City Compares to Other Months

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

This table compares monthly weather conditions in South Yuba City, 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 (51°F)	111 mm (4.4 inches)	84%	moderate
February Weather	12°C (54°F)	101 mm (4.0 inches)	84%	moderate
March Weather	14°C (57°F)	86 mm (3.4 inches)	83%	high
April Weather	18°C (65°F)	41 mm (1.6 inches)	81%	very high
May Weather	22°C (72°F)	23 mm (0.9 inches)	74%	very high
June Weather	27°C (81°F)	5 mm (0.2 inches)	64%	extreme
July Weather	28°C (83°F)	0 mm (0.0 inches)	44%	very high
August Weather	27°C (82°F)	0 mm (0.0 inches)	36%	very high
September Weather	25°C (77°F)	2 mm (0.1 inches)	44%	very high
October Weather	20°C (68°F)	32 mm (1.2 inches)	65%	high
November Weather	14°C (57°F)	47 mm (1.9 inches)	84%	moderate
December Weather	10°C (50°F)	84 mm (3.3 inches)	83%	moderate