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May Weather in Plainfield, United States

Last updated: June 24, 2025

In May, the average temperature in Plainfield, United States hovers around 14°C (58°F). However, be prepared for a range of temperatures, as the minimum can drop to -3°C (27°F) while the maximum may reach a sizzling 34°C (94°F). Expect some rain too, with total precipitation of 111 mm (4.4 in) spread over about 13 days. Don't forget to account for the average humidity of 77%, which can make the air feel a bit heavier!

May Temperature in Plainfield

In May in Plainfield, the average temperature is 14°C (58°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop as low as -3°C (27°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates May temperature patterns in Plainfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Plainfield, May typically has an average temperature of 14°C (58°F), with highs reaching up to 34°C (94°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec191933435769736963493425
Data source: Temperature data for Plainfield 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 Plainfield

In Plainfield in May, the precipitation amount reaches 111 mm (4.4 in) over the course of 13 days.

May Precipitation Trends in Plainfield

The chart displays monthly precipitation patterns in Plainfield, 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 Plainfield, May typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec395262991111091211281051075150
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Plainfield

In Plainfield in May, humidity is 77%. With an average temperature of 14°C (58°F), this humidity feels like a warm blanket wrapping around you, making traveling feel sticky and heavy, yet still manageable as you explore the sights.

May Average Humidity in Plainfield

This chart illustrates the average monthly humidity levels in Plainfield, 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 Plainfield is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%87%84%77%75%75%73%78%84%89%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Plainfield

In Plainfield 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 Plainfield.

Maximum UV Index Levels in Plainfield for May

The chart shows the monthly maximum UV Index (UVI) for Plainfield 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 Plainfield typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: Plainfield 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 Plainfield Compares to Other Months

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

This table compares monthly weather conditions in Plainfield, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)39 mm (1.5 inches)89%low
February Weather-7°C (20°F)52 mm (2.0 inches)90%moderate
March Weather1°C (33°F)62 mm (2.4 inches)87%moderate
April Weather6°C (43°F)99 mm (3.9 inches)84%very high
May Weather14°C (58°F)111 mm (4.4 inches)77%very high
June Weather20°C (69°F)109 mm (4.3 inches)75%very high
July Weather23°C (73°F)121 mm (4.7 inches)74%very high
August Weather21°C (69°F)128 mm (5.0 inches)73%very high
September Weather17°C (63°F)105 mm (4.1 inches)78%high
October Weather9°C (49°F)107 mm (4.2 inches)84%moderate
November Weather1°C (34°F)51 mm (2.0 inches)89%moderate
December Weather-4°C (26°F)50 mm (2.0 inches)87%low

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