January Weather in Westport, United States

Last updated: June 24, 2025

In January, the average temperature in Westport, United States hovers around -6°C (21°F), with minimum lows dipping as low as -28°C (-19°F) and maximum highs reaching up to 12°C (55°F). This chilly month also brings along 76 mm (3.0 in) of precipitation spread over 10 days, contributing to an average humidity of a brisk 93%. Prepare for a winter wonderland!

January Temperature in Westport

In January in Westport, the average temperature is -6°C (21°F). The maximum can reach 12°C (55°F) and the minimum can be as low as -28°C (-19°F). This means that travelers should prepare for a cold climate and pack accordingly to ensure comfort during their visit.

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

The chart illustrates January temperature patterns in Westport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westport, January typically has an average temperature of -6°C (21°F), with highs reaching up to 12°C (55°F) and lows dropping to around -28°C (-19°F).

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

January Precipitation in Westport

In Westport in January, the total precipitation amount is 76 mm (3.0 in) spread over a period of 10 days.

January Precipitation Trends in Westport

The chart displays monthly precipitation patterns in Westport, 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 Westport, January typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 10 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 Westport

In Westport in January, humidity is 93%. With an average temperature of -6°C (21°F), this humidity feels like an icy mist that clings to your skin, making every breath feel crisp and challenging for outdoor exploration.

January Average Humidity in Westport

This chart illustrates the average monthly humidity levels in Westport, 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 Westport is approximately 93%, 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 Westport

In Westport in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Westport, you can visit Hourly UV Index in Westport.

Maximum UV Index Levels in Westport for January

The chart shows the monthly maximum UV Index (UVI) for Westport 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 Westport typically reaches 2, which falls under the low exposure category.

Data source: Westport 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 Westport Compares to Other Months

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

This table compares monthly weather conditions in Westport, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	76 mm (3.0 inches)	93%	low
February Weather	-5°C (23°F)	76 mm (3.0 inches)	92%	moderate
March Weather	-1°C (30°F)	66 mm (2.6 inches)	86%	moderate
April Weather	6°C (43°F)	107 mm (4.2 inches)	85%	very high
May Weather	13°C (56°F)	91 mm (3.6 inches)	80%	very high
June Weather	18°C (65°F)	114 mm (4.5 inches)	74%	very high
July Weather	21°C (71°F)	123 mm (4.8 inches)	76%	very high
August Weather	20°C (69°F)	115 mm (4.5 inches)	75%	very high
September Weather	16°C (62°F)	72 mm (2.8 inches)	78%	high
October Weather	10°C (50°F)	142 mm (5.6 inches)	86%	moderate
November Weather	2°C (36°F)	101 mm (4.0 inches)	88%	moderate
December Weather	-3°C (27°F)	77 mm (3.0 inches)	89%	low