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January Weather in Westfield, United States

Last updated: June 24, 2025

In January, the average temperature in Westfield, United States is a chilly -7°C (20°F), with temperatures ranging from a frigid -32°C (-26°F) to a maximum of 8°C (47°F). Expect about 42 mm (1.6 in) of precipitation over 7 days, accompanied by a high average humidity of 85%. Stay warm and prepare for a wet, cold month!

January Temperature in Westfield

In January in Westfield, the average temperature is -7°C (20°F). Maximum temperatures can reach 8°C (47°F), while minimum temperatures can drop as low as -32°C (-26°F). Travelers should be prepared for extremely cold weather and pack appropriately to ensure a comfortable visit.

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 -7°C (20°F), with highs reaching up to 8°C (47°F) and lows dropping to around -32°C (-26°F).
JanFebMarAprMayJunJulAugSepOctNovDec192034445870747063503527
Data source: Temperature data for Westfield generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Westfield

In Westfield in January, the total precipitation amount is 42 mm (1.6 in) accumulated over a span of 7 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 42 mm (1.6 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec42536396114111117116951024948
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Westfield

In Westfield in January humidity is 85%. With an average temperature of -7°C (20°F), this humidity feels like an icy breath that clings to your skin, making travel challenging as the cold seeps into your bones while you navigate through the damp air.

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 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
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.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
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.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)42 mm (1.6 inches)85%low
February Weather-7°C (20°F)53 mm (2.1 inches)85%moderate
March Weather1°C (34°F)63 mm (2.5 inches)85%moderate
April Weather7°C (44°F)96 mm (3.8 inches)85%very high
May Weather15°C (59°F)114 mm (4.5 inches)78%very high
June Weather21°C (70°F)111 mm (4.4 inches)80%very high
July Weather23°C (74°F)117 mm (4.6 inches)78%very high
August Weather21°C (70°F)115 mm (4.5 inches)76%very high
September Weather17°C (64°F)95 mm (3.7 inches)79%high
October Weather10°C (50°F)102 mm (4.0 inches)83%moderate
November Weather2°C (35°F)49 mm (1.9 inches)88%moderate
December Weather-3°C (27°F)48 mm (1.9 inches)81%low

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