nomadseason

January Weather in Westlake, United States

Last updated: June 24, 2025

In Westlake, United States, the average temperature in January hovers around a chilly -1°C (30°F). Expect minimum lows of -20°C (-5°F) and occasional highs reaching 16°C (61°F). During this month, precipitation averages 80 mm (3.2 in) across 12 days, contributing to the area's high humidity level of 88%. Be prepared for a wet and cool experience!

January Temperature in Westlake

In January in Westlake, the average temperature is -1°C (30°F). The maximum can reach 16°C (61°F), and the minimum can be as low as -20°C (-5°F). Travelers should be prepared for a wide range of temperatures, making it essential to pack both warm and mild weather clothing.

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 -1°C (30°F), with highs reaching up to 16°C (61°F) and lows dropping to around -20°C (-5°F).
JanFebMarAprMayJunJulAugSepOctNovDec303238485970757468584336
Data source: Temperature data for Westlake generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Westlake

In Westlake in January, the precipitation amount is 80 mm (3.2 in) over a span of 12 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 80 mm (3.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec80858611212211312488791079987
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Westlake

In Westlake in January humidity is 88%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that penetrates through your layers, making travel uncomfortable as every gust of wind becomes a sharp reminder of the cold and damp air surrounding you.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
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 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 Westlake, you can check the information here.

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 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
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.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)80 mm (3.2 inches)88%moderate
February Weather0°C (32°F)85 mm (3.4 inches)88%moderate
March Weather3°C (38°F)86 mm (3.4 inches)87%high
April Weather9°C (48°F)112 mm (4.4 inches)87%very high
May Weather15°C (60°F)122 mm (4.8 inches)81%very high
June Weather21°C (70°F)113 mm (4.4 inches)83%very high
July Weather24°C (76°F)124 mm (4.9 inches)82%very high
August Weather23°C (74°F)88 mm (3.5 inches)76%very high
September Weather20°C (69°F)79 mm (3.1 inches)77%very high
October Weather14°C (58°F)107 mm (4.2 inches)82%high
November Weather6°C (43°F)99 mm (3.9 inches)89%moderate
December Weather2°C (36°F)87 mm (3.4 inches)86%low

Compare Westlake's Climate with Cities Worldwide