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January Weather in Westfield, United States

Last updated: June 24, 2025

In January, the average temperature in Westfield, United States hovers around -9°C (16°F). This chilly month can see minimum lows of -32°C (-26°F) and highs reaching up to 11°C (52°F). Expect 93 mm (3.7 in) of precipitation spread over approximately 9 days, with an average humidity level of an impressive 93%.

January Temperature in Westfield

In January in Westfield, the average temperature is -9°C (16°F). The maximum can reach 11°C (52°F) and the minimum can be as low as -32°C (-26°F). It's essential to pack warm clothing and prepare for a wide range of temperatures if you're planning to travel to Westfield during this time.

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 -9°C (16°F), with highs reaching up to 11°C (52°F) and lows dropping to around -32°C (-26°F).
JanFebMarAprMayJunJulAugSepOctNovDec151725385161676557463220
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 precipitation amount is 93 mm (3.7 in) over the course of 9 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 93 mm (3.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec937976111108911179097112114103
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 93%. With an average temperature of -9°C (16°F), this humidity feels like a biting chill that seeps through your layers, making travel outside an exercise in endurance as the cold dampness wraps around you, leaving you longing for warmth and a cozy respite.

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 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%90%87%82%77%82%83%85%87%88%90%
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.
JanFebMarAprMayJunJulAugSepOctNovDec2357810887532
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-9°C (16°F)93 mm (3.7 inches)93%low
February Weather-8°C (18°F)79 mm (3.1 inches)92%moderate
March Weather-4°C (26°F)76 mm (3.0 inches)90%moderate
April Weather3°C (39°F)111 mm (4.4 inches)87%high
May Weather11°C (52°F)108 mm (4.2 inches)82%very high
June Weather16°C (61°F)91 mm (3.6 inches)77%very high
July Weather19°C (67°F)117 mm (4.6 inches)81%very high
August Weather19°C (66°F)90 mm (3.5 inches)83%very high
September Weather14°C (57°F)97 mm (3.8 inches)85%high
October Weather8°C (46°F)112 mm (4.4 inches)87%moderate
November Weather0°C (32°F)113 mm (4.5 inches)87%moderate
December Weather-7°C (20°F)103 mm (4.1 inches)90%low

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