January Weather in Clearlake Oaks, United States

Last updated: June 24, 2025

In January, the average temperature in Clearlake Oaks, United States hovers around 7°C (46°F). Expect minimums as low as -3°C (26°F) and maximums reaching 24°C (75°F). During this time, 144 mm (5.7 in) of precipitation typically falls over the course of 9 days, contributing to a high average humidity of 86%. Prepare for a mix of cool and wet weather!

January Temperature in Clearlake Oaks

In January in Clearlake Oaks, the average temperature is 7°C (46°F). Maximum temperatures can reach 24°C (75°F), while minimums can drop as low as -3°C (26°F). This variation in temperatures makes it essential to pack layers for your trip, ensuring you're comfortable no matter the weather.

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

The chart illustrates January temperature patterns in Clearlake Oaks, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Clearlake Oaks, January typically has an average temperature of 7°C (46°F), with highs reaching up to 24°C (75°F) and lows dropping to around -3°C (26°F).

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

January Precipitation in Clearlake Oaks

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

January Precipitation Trends in Clearlake Oaks

The chart displays monthly precipitation patterns in Clearlake 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 Clearlake 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 Clearlake Oaks

In Clearlake Oaks in January humidity is 86%. With an average temperature of 7°C (46°F), this humidity feels like wrapping yourself in a damp blanket, making travel uncomfortable and heavy, as the cold air mixes with the muggy atmosphere, leaving you longing for a warm, dry refuge.

January Average Humidity in Clearlake Oaks

This chart illustrates the average monthly humidity levels in Clearlake 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 Clearlake Oaks is approximately 86%, 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 Clearlake Oaks

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

Maximum UV Index Levels in Clearlake Oaks for January

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

Data source: Clearlake 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 Clearlake Oaks Compares to Other Months

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

This table compares monthly weather conditions in Clearlake Oaks, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (46°F)	144 mm (5.7 inches)	86%	moderate
February Weather	8°C (48°F)	157 mm (6.2 inches)	84%	moderate
March Weather	9°C (49°F)	104 mm (4.1 inches)	83%	high
April Weather	13°C (56°F)	50 mm (2.0 inches)	80%	very high
May Weather	16°C (62°F)	38 mm (1.5 inches)	80%	extreme
June Weather	22°C (71°F)	3 mm (0.1 inches)	76%	extreme
July Weather	25°C (78°F)	0 mm (0.0 inches)	70%	extreme
August Weather	25°C (77°F)	1 mm (0.0 inches)	66%	extreme
September Weather	21°C (71°F)	4 mm (0.1 inches)	68%	very high
October Weather	16°C (62°F)	42 mm (1.6 inches)	72%	high
November Weather	11°C (52°F)	57 mm (2.3 inches)	84%	moderate
December Weather	8°C (46°F)	94 mm (3.7 inches)	84%	moderate