January Weather in Westfield, United States

Last updated: June 24, 2025

In January, the average temperature in Westfield, United States is a brisk -3°C (27°F). While temperatures can dip as low as -20°C (-5°F), they can also reach a comfortable 16°C (62°F). Expect approximately 103 mm (4.1 in) of precipitation spread over 15 days, with an average humidity level of 91%. Be prepared for a wintery mix of weather!

January Temperature in Westfield

In January in Westfield, the average temperature is -3°C (27°F). The maximum can reach 16°C (62°F), while the minimum can drop as low as -20°C (-5°F). Travelers should prepare for a wide range of temperatures and pack accordingly for their adventure.

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

The chart illustrates January temperature patterns in Westfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westfield, January typically has an average temperature of -3°C (27°F), with highs reaching up to 16°C (62°F) and lows dropping to around -20°C (-5°F).

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

January Precipitation in Westfield

In Westfield in January, the precipitation amount is 103 mm (4.1 in) during a span of 15 days.

January Precipitation Trends in Westfield

The chart displays monthly precipitation patterns in Westfield, 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 Westfield, January typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 15 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 Westfield

In Westfield in January humidity is 91%. With an average temperature of -3°C (27°F), this humidity feels like a thick, icy blanket wrapping around you, making travel quite uncomfortable as every breath is a mix of frigid air and moisture, and the cold dampness clings to your skin, turning even short outings into a test of endurance.

January Average Humidity in Westfield

This chart illustrates the average monthly humidity levels in Westfield, 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 Westfield is approximately 91%, 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 Westfield

In Westfield 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 Westfield, you can visit Hourly UV Index in Westfield.

Maximum UV Index Levels in Westfield for January

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

Data source: Westfield 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 Westfield Compares to Other Months

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

This table compares monthly weather conditions in Westfield, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	103 mm (4.1 inches)	91%	low
February Weather	-2°C (29°F)	104 mm (4.1 inches)	91%	moderate
March Weather	1°C (35°F)	100 mm (3.9 inches)	88%	high
April Weather	7°C (45°F)	126 mm (4.9 inches)	88%	very high
May Weather	14°C (57°F)	122 mm (4.8 inches)	82%	very high
June Weather	19°C (67°F)	129 mm (5.1 inches)	79%	very high
July Weather	22°C (72°F)	155 mm (6.1 inches)	77%	very high
August Weather	21°C (70°F)	111 mm (4.4 inches)	72%	very high
September Weather	18°C (64°F)	87 mm (3.4 inches)	76%	very high
October Weather	12°C (54°F)	152 mm (6.0 inches)	83%	high
November Weather	4°C (40°F)	129 mm (5.1 inches)	88%	moderate
December Weather	1°C (33°F)	124 mm (4.9 inches)	87%	low