January Weather in Fair Oaks, United States

Last updated: June 24, 2025

In January, the average temperature in Fair Oaks, United States hovers around 9°C (49°F), with a minimum dip to -2°C (29°F) and a pleasant maximum of 23°C (74°F). Expect some moisture, as 144 mm (5.7 in) of precipitation falls over about 9 days. With an average humidity of 84%, be prepared for a slightly damp atmosphere while you enjoy the charm of this destination.

January Temperature in Fair Oaks

In January in Fair Oaks, the average temperature is 9°C (49°F). Maximums can reach 23°C (74°F), and minimums can drop as low as -2°C (29°F). Travelers should be prepared for varying weather conditions, ranging from mild to chilly.

January Weather in Fair Oaks: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Fair Oaks, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fair Oaks, January typically has an average temperature of 9°C (49°F), with highs reaching up to 23°C (74°F) and lows dropping to around -2°C (29°F).

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

January Precipitation in Fair Oaks

In Fair Oaks in January, the precipitation amount is 144 mm (5.7 in) spread over 9 days.

January Precipitation Trends in Fair Oaks

The chart displays monthly precipitation patterns in Fair Oaks, 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 Fair Oaks, January typically receives around 144 mm (5.7 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 Fair Oaks

In Fair Oaks in January, humidity is 84%. With an average temperature of 9°C (49°F), this humidity feels like a chilly embrace, making travel uncomfortable as the dampness seeps into your clothes and lingers in the air, leaving you feeling cool yet clammy.

January Average Humidity in Fair Oaks

This chart illustrates the average monthly humidity levels in Fair Oaks, 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 Fair Oaks 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 Fair Oaks

In Fair Oaks 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 Fair Oaks, you can check the information here.

Maximum UV Index Levels in Fair Oaks for January

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

Data source: Fair Oaks 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 Fair Oaks Compares to Other Months

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

This table compares monthly weather conditions in Fair Oaks, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	144 mm (5.7 inches)	84%	moderate
February Weather	10°C (51°F)	139 mm (5.5 inches)	84%	moderate
March Weather	13°C (55°F)	139 mm (5.5 inches)	83%	high
April Weather	16°C (61°F)	64 mm (2.5 inches)	81%	very high
May Weather	20°C (68°F)	31 mm (1.2 inches)	74%	very high
June Weather	24°C (76°F)	5 mm (0.2 inches)	64%	extreme
July Weather	26°C (79°F)	0 mm (0.0 inches)	44%	extreme
August Weather	26°C (78°F)	0 mm (0.0 inches)	36%	very high
September Weather	23°C (74°F)	6 mm (0.2 inches)	44%	very high
October Weather	18°C (65°F)	46 mm (1.8 inches)	65%	high
November Weather	12°C (54°F)	79 mm (3.1 inches)	84%	moderate
December Weather	9°C (48°F)	129 mm (5.1 inches)	83%	moderate