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May Weather in Defiance, United States

Last updated: June 24, 2025

In May, the average temperature in Defiance, United States hovers around 17°C (62°F), with lows dipping to a chilly -1°C (30°F) and highs soaring to a warm 35°C (95°F). Expect 139 mm (5.5 in) of precipitation over approximately 15 days, contributing to the region's average humidity of 81%. Be prepared for a mix of weather!

May Temperature in Defiance

In May in Defiance, the average temperature is 17°C (62°F), with maximums reaching up to 35°C (95°F) and minimums dipping as low as -1°C (30°F). Be prepared for a range of temperatures to ensure a comfortable travel experience.

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

The chart illustrates May temperature patterns in Defiance, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Defiance, May typically has an average temperature of 17°C (62°F), with highs reaching up to 35°C (95°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec283040506272767368564134
Data source: Temperature data for Defiance 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 Defiance

In Defiance in May, the precipitation amount is 139 mm (5.5 in), occurring over 15 days.

May Precipitation Trends in Defiance

The chart displays monthly precipitation patterns in Defiance, 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 Defiance, May typically receives around 139 mm (5.5 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec727493941391211159266918457
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Defiance

In Defiance in May, humidity is 81%. With an average temperature of 17°C (62°F), this humidity feels like a warm blanket enveloping you, making outdoor adventures feel sticky and requiring frequent breaks to stay comfortable while exploring.

May Average Humidity in Defiance

This chart illustrates the average monthly humidity levels in Defiance, 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 Defiance is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Defiance

In Defiance 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 Defiance.

Maximum UV Index Levels in Defiance for May

The chart shows the monthly maximum UV Index (UVI) for Defiance 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 Defiance typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35699101098642
Data source: Defiance 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 Defiance Compares to Other Months

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

This table compares monthly weather conditions in Defiance, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)72 mm (2.8 inches)88%moderate
February Weather-1°C (31°F)74 mm (2.9 inches)87%moderate
March Weather4°C (40°F)93 mm (3.7 inches)87%high
April Weather10°C (50°F)94 mm (3.7 inches)87%very high
May Weather17°C (62°F)139 mm (5.5 inches)81%very high
June Weather22°C (72°F)121 mm (4.7 inches)82%very high
July Weather24°C (76°F)115 mm (4.5 inches)81%very high
August Weather23°C (74°F)92 mm (3.6 inches)78%very high
September Weather20°C (68°F)66 mm (2.6 inches)78%very high
October Weather14°C (57°F)91 mm (3.6 inches)82%high
November Weather5°C (41°F)84 mm (3.3 inches)89%moderate
December Weather1°C (35°F)57 mm (2.2 inches)86%low

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