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May Weather in Deerfield, United States

Last updated: June 24, 2025

The average temperature in Deerfield, United States during May is a comfortable 17°C (63°F). However, be prepared for a wide range, as temperatures can dip to a chilly -1°C (30°F) or soar to a scorching 37°C (99°F). Expect some rain, with an average precipitation of 112 mm (4.4 in) spread over 12 days. Don't forget, the average humidity is quite high at 81%, contributing to that humid feel!

May Temperature in Deerfield

In May in Deerfield, the average temperature is 17°C (63°F). Maximum temperatures can reach 37°C (99°F), while minimums can drop as low as -1°C (30°F). Be prepared for a wide range of temperatures when traveling to Deerfield this month.

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

The chart illustrates May temperature patterns in Deerfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Deerfield, May typically has an average temperature of 17°C (63°F), with highs reaching up to 37°C (99°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec333446536376797671554537
Data source: Temperature data for Deerfield 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 Deerfield

In Deerfield in May, the total precipitation amount is 112 mm (4.4 in), falling over the course of 12 days.

May Precipitation Trends in Deerfield

The chart displays monthly precipitation patterns in Deerfield, 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 Deerfield, May typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1617474111250466742391018
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Deerfield

In Deerfield in May humidity is 81%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket enveloping you, making travel slightly oppressive and calling for frequent breaks in air-conditioned spaces to recharge and enjoy your journey comfortably.

May Average Humidity in Deerfield

This chart illustrates the average monthly humidity levels in Deerfield, 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 Deerfield is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%77%65%67%81%82%82%84%79%75%79%83%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Deerfield

In Deerfield in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Deerfield.

Maximum UV Index Levels in Deerfield for May

The chart shows the monthly maximum UV Index (UVI) for Deerfield 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 Deerfield typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec45710111212119753
Data source: Deerfield 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 Deerfield Compares to Other Months

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

This table compares monthly weather conditions in Deerfield, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)16 mm (0.6 inches)74%moderate
February Weather1°C (34°F)17 mm (0.7 inches)77%moderate
March Weather8°C (46°F)47 mm (1.9 inches)65%high
April Weather12°C (54°F)41 mm (1.6 inches)67%very high
May Weather17°C (63°F)112 mm (4.4 inches)81%extreme
June Weather24°C (76°F)50 mm (2.0 inches)82%extreme
July Weather26°C (79°F)46 mm (1.8 inches)82%extreme
August Weather25°C (77°F)67 mm (2.6 inches)84%extreme
September Weather22°C (71°F)42 mm (1.7 inches)79%very high
October Weather13°C (55°F)39 mm (1.6 inches)75%high
November Weather7°C (45°F)10 mm (0.4 inches)79%moderate
December Weather3°C (37°F)18 mm (0.7 inches)83%moderate

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