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May Weather in Napoleon, United States

Last updated: June 24, 2025

In May, the average temperature in Napoleon, United States hovers around 12°C (55°F). Expect a range from a chilly -4°C (25°F) at its lowest to a warm 31°C (88°F) at its peak. During this time, you can anticipate around 61 mm (2.4 in) of precipitation over 9 days, with an average humidity level of 74%.

May Temperature in Napoleon

In May in Napoleon, the average temperature is 12°C (55°F). The maximum can reach 31°C (88°F) and the minimum can be as low as -4°C (25°F). Be prepared for a wide range of temperatures during your travels, as you may need both summer and winter clothing.

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

The chart illustrates May temperature patterns in Napoleon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Napoleon, May typically has an average temperature of 12°C (55°F), with highs reaching up to 31°C (88°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec131128395468726860433020
Data source: Temperature data for Napoleon 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 Napoleon

In Napoleon in May, the precipitation amount is 61 mm (2.4 in) spread over 9 days.

May Precipitation Trends in Napoleon

The chart displays monthly precipitation patterns in Napoleon, 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 Napoleon, May typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec151726356185739461661729
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Napoleon

In Napoleon in May, humidity is 74%. With an average temperature of 12°C (55°F), this humidity feels like a cool, damp chill clinging to your skin, making outdoor activities less enjoyable and encouraging you to seek sheltered spots or cozy cafes to stay warm while exploring the area.

May Average Humidity in Napoleon

This chart illustrates the average monthly humidity levels in Napoleon, 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 Napoleon is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%89%82%79%74%78%76%77%72%74%85%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Napoleon

In Napoleon 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 Napoleon.

Maximum UV Index Levels in Napoleon for May

The chart shows the monthly maximum UV Index (UVI) for Napoleon 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 Napoleon typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3559910997532
Data source: Napoleon 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 Napoleon Compares to Other Months

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

This table compares monthly weather conditions in Napoleon, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (14°F)15 mm (0.6 inches)87%moderate
February Weather-12°C (11°F)17 mm (0.7 inches)89%moderate
March Weather-2°C (29°F)26 mm (1.0 inches)82%moderate
April Weather4°C (39°F)35 mm (1.4 inches)79%very high
May Weather12°C (55°F)61 mm (2.4 inches)74%very high
June Weather20°C (68°F)85 mm (3.3 inches)78%very high
July Weather22°C (73°F)73 mm (2.9 inches)76%very high
August Weather20°C (69°F)94 mm (3.7 inches)77%very high
September Weather15°C (60°F)61 mm (2.4 inches)72%high
October Weather6°C (43°F)66 mm (2.6 inches)74%moderate
November Weather-1°C (30°F)17 mm (0.7 inches)85%moderate
December Weather-6°C (21°F)29 mm (1.1 inches)84%low

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