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May Weather in Westfield, United States

Last updated: June 24, 2025

In May, the average temperature in Westfield, United States hovers around 14°C (57°F), offering a mild climate that's perfect for exploration. However, be prepared for a temperature range that can dip to a chilly -4°C (25°F) at its lowest and reach a warm 30°C (87°F) at its highest. Rainfall is likely, with an average precipitation of 116 mm (4.6 in) over 14 days, and the air tends to be quite humid, with an average humidity level of 80%. Make sure to pack accordingly and enjoy your time!

May Temperature in Westfield

In May in Westfield, the average temperature is 14°C (57°F), with maximums reaching as high as 30°C (87°F) and minimums dropping to as low as -4°C (25°F). This wide temperature range makes it essential to pack versatile clothing for your trip.

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

The chart illustrates May 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, May typically has an average temperature of 14°C (57°F), with highs reaching up to 30°C (87°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec252834455765716962523731
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.

May Precipitation in Westfield

In Westfield in May, the total precipitation amount is 116 mm (4.6 in) spread over a duration of 14 days.

May Precipitation Trends in Westfield

The chart displays monthly precipitation patterns in Westfield, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Westfield, May typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec6784751091169512479891197880
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Westfield

In Westfield in May, humidity is 80%. With an average temperature of 14°C (57°F), this humidity feels like a warm, damp blanket wrapping around you, making travel uncomfortable and sticky, as sweat clings to your skin and the air feels heavy with moisture.

May Average Humidity in Westfield

This chart illustrates the average monthly humidity levels in Westfield, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Westfield is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%89%88%80%79%74%64%67%81%89%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Westfield

In Westfield in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Westfield.

Maximum UV Index Levels in Westfield for May

The chart shows the monthly maximum UV Index (UVI) for Westfield in May, 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 May, the maximum UV index in Westfield typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Westfield May 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 May 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 May’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 May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)67 mm (2.6 inches)89%moderate
February Weather-2°C (28°F)84 mm (3.3 inches)90%moderate
March Weather1°C (35°F)75 mm (2.9 inches)89%high
April Weather7°C (46°F)109 mm (4.3 inches)88%very high
May Weather14°C (57°F)116 mm (4.6 inches)80%very high
June Weather19°C (66°F)95 mm (3.7 inches)79%very high
July Weather21°C (71°F)124 mm (4.9 inches)74%very high
August Weather20°C (69°F)79 mm (3.1 inches)64%very high
September Weather17°C (62°F)89 mm (3.5 inches)67%very high
October Weather11°C (52°F)119 mm (4.7 inches)81%high
November Weather3°C (38°F)78 mm (3.1 inches)89%moderate
December Weather-1°C (31°F)80 mm (3.2 inches)88%low

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