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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). Expect a minimum of -2°C (29°F) and a maximum of 30°C (86°F). With an average precipitation of 122 mm (4.8 in) spread over 15 days, you might want to keep an umbrella handy! Additionally, the average humidity levels at a comfortable 82% create a pleasant atmosphere for outdoor activities.

May Temperature in Westfield

In May in Westfield, the average temperature is 14°C (57°F). Maximums can reach 30°C (86°F) and minimums can be as low as -2°C (29°F). This variety in temperatures makes Westfield an ideal destination for travelers seeking diverse weather experiences.

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 (86°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec272835445766727064544033
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 precipitation amount is 122 mm (4.8 in) over a span of 15 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 122 mm (4.8 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec10310410012612212915511187152129124
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Westfield

In Westfield in May, humidity is 82%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making outdoor activities uncomfortable and travel more challenging due to the heavy, damp air.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%88%88%82%80%77%72%76%83%88%87%
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 is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689101098642
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-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 Weather1°C (35°F)100 mm (3.9 inches)88%high
April Weather7°C (45°F)126 mm (4.9 inches)88%very high
May Weather14°C (57°F)122 mm (4.8 inches)82%very high
June Weather19°C (67°F)129 mm (5.1 inches)79%very high
July Weather22°C (72°F)155 mm (6.1 inches)77%very high
August Weather21°C (70°F)111 mm (4.4 inches)72%very high
September Weather18°C (64°F)87 mm (3.4 inches)76%very high
October Weather12°C (54°F)152 mm (6.0 inches)83%high
November Weather4°C (40°F)129 mm (5.1 inches)88%moderate
December Weather1°C (33°F)124 mm (4.9 inches)87%low

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