January Weather in Westlake, United States

Last updated: June 24, 2025

In January, the average temperature in Westlake, United States hovers around 12°C (53°F). Expect a chill with minimums dropping to -8°C (19°F), while sunny days can reach a pleasant 27°C (81°F). During this month, you'll encounter approximately 117 mm (4.6 in) of precipitation over 8 days, contributing to an average humidity of 81%.

January Temperature in Westlake

In January in Westlake, the average temperature is 12°C (53°F), with maximums reaching 27°C (81°F) and minimums dropping as low as -8°C (19°F). Be prepared for a wide range of temperatures if you plan to travel during this time.

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

The chart illustrates January temperature patterns in Westlake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westlake, January typically has an average temperature of 12°C (53°F), with highs reaching up to 27°C (81°F) and lows dropping to around -8°C (19°F).

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

January Precipitation in Westlake

In Westlake in January, the total precipitation amount is 117 mm (4.6 in) over a span of 8 days.

January Precipitation Trends in Westlake

The chart displays monthly precipitation patterns in Westlake, 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 Westlake, January typically receives around 117 mm (4.6 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 Westlake

In Westlake in January, humidity is 81%. With an average temperature of 12°C (53°F), this humidity feels like a chilly dampness enveloping you, making outdoor activities uncomfortable and requiring layers to stay warm while you explore.

January Average Humidity in Westlake

This chart illustrates the average monthly humidity levels in Westlake, 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 Westlake is approximately 81%, 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 Westlake

In Westlake in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Westlake.

Maximum UV Index Levels in Westlake for January

The chart shows the monthly maximum UV Index (UVI) for Westlake 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 Westlake typically reaches 5, which falls under the moderate exposure category.

Data source: Westlake 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 Westlake Compares to Other Months

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

This table compares monthly weather conditions in Westlake, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (53°F)	117 mm (4.6 inches)	81%	moderate
February Weather	14°C (58°F)	110 mm (4.3 inches)	81%	very high
March Weather	18°C (65°F)	78 mm (3.1 inches)	79%	very high
April Weather	20°C (69°F)	152 mm (6.0 inches)	80%	very high
May Weather	25°C (77°F)	206 mm (8.1 inches)	81%	extreme
June Weather	27°C (81°F)	168 mm (6.6 inches)	76%	extreme
July Weather	28°C (83°F)	159 mm (6.2 inches)	73%	extreme
August Weather	28°C (83°F)	182 mm (7.2 inches)	71%	extreme
September Weather	26°C (79°F)	174 mm (6.8 inches)	72%	very high
October Weather	22°C (72°F)	124 mm (4.9 inches)	73%	very high
November Weather	16°C (60°F)	71 mm (2.8 inches)	83%	high
December Weather	14°C (57°F)	126 mm (5.0 inches)	88%	moderate