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May Weather in Pontiac, United States

Last updated: June 24, 2025

In May, the average temperature in Pontiac, United States hovers around 15°C (59°F). During this month, temperatures can range from a chilly -3°C (28°F) to a sweltering 34°C (93°F). Precipitation is expected to reach 110 mm (4.3 in) over the course of about 14 days, contributing to the average humidity level of 80%. Prepare for a month of varied weather!

May Temperature in Pontiac

In May in Pontiac, the average temperature is 15°C (59°F). Maximums can reach 34°C (93°F), and minimums can drop as low as -3°C (28°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates May temperature patterns in Pontiac, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pontiac, May typically has an average temperature of 15°C (59°F), with highs reaching up to 34°C (93°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec252736465969747165533832
Data source: Temperature data for Pontiac 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 Pontiac

In Pontiac in May, the total precipitation amount is 110 mm (4.3 in) spread over 14 days.

May Precipitation Trends in Pontiac

The chart displays monthly precipitation patterns in Pontiac, 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 Pontiac, May typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec626868951101049392781077153
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Pontiac

In Pontiac in May, humidity is 80%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making outdoor activities slightly uncomfortable and necessitating frequent breaks to stay hydrated.

May Average Humidity in Pontiac

This chart illustrates the average monthly humidity levels in Pontiac, 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 Pontiac is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Pontiac

In Pontiac 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 Pontiac.

Maximum UV Index Levels in Pontiac for May

The chart shows the monthly maximum UV Index (UVI) for Pontiac 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 Pontiac typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097542
Data source: Pontiac 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 Pontiac Compares to Other Months

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

This table compares monthly weather conditions in Pontiac, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)62 mm (2.4 inches)88%low
February Weather-3°C (27°F)68 mm (2.7 inches)87%moderate
March Weather2°C (36°F)68 mm (2.7 inches)85%moderate
April Weather8°C (46°F)95 mm (3.8 inches)86%very high
May Weather15°C (59°F)110 mm (4.3 inches)80%very high
June Weather21°C (69°F)104 mm (4.1 inches)80%very high
July Weather23°C (74°F)93 mm (3.7 inches)80%very high
August Weather22°C (72°F)92 mm (3.6 inches)80%very high
September Weather18°C (65°F)78 mm (3.1 inches)80%high
October Weather12°C (53°F)107 mm (4.2 inches)84%moderate
November Weather4°C (39°F)71 mm (2.8 inches)89%moderate
December Weather0°C (32°F)53 mm (2.1 inches)86%low

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