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May Weather in Pontiac, United States

Last updated: June 24, 2025

In Pontiac, United States, the average temperature in May is a comfortable 17°C (64°F). However, be prepared for temperature fluctuations, as it can drop to a chilly 0°C (32°F) or rise to a warm 35°C (95°F). Expect around 163 mm (6.4 in) of precipitation over approximately 16 days, accompanied by an average humidity level of 79%. Make sure to pack accordingly!

May Temperature in Pontiac

In May in Pontiac, the average temperature is 17°C (64°F). Maximum temperatures can reach 35°C (95°F), while minimums can drop as low as 0°C (32°F). This varied climate makes Pontiac an ideal destination for travelers seeking both warm and cool experiences.

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 17°C (64°F), with highs reaching up to 35°C (95°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec262841506373767469564034
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 precipitation amount is 163 mm (6.4 in) spread out over 16 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 163 mm (6.4 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec62689911716313510092821315656
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 79%. With an average temperature of 17°C (64°F), this humidity feels like a warm blanket wrapped around you, making outdoor activities feel a bit muggy and requiring frequent hydration as you explore the sights.

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 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
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.
JanFebMarAprMayJunJulAugSepOctNovDec35689101098642
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-3°C (27°F)62 mm (2.4 inches)82%moderate
February Weather-2°C (29°F)68 mm (2.7 inches)83%moderate
March Weather5°C (41°F)99 mm (3.9 inches)84%high
April Weather10°C (51°F)117 mm (4.6 inches)85%very high
May Weather17°C (64°F)163 mm (6.4 inches)79%very high
June Weather23°C (74°F)135 mm (5.3 inches)82%very high
July Weather25°C (76°F)100 mm (3.9 inches)80%very high
August Weather23°C (74°F)92 mm (3.6 inches)81%very high
September Weather21°C (69°F)82 mm (3.2 inches)80%very high
October Weather13°C (56°F)131 mm (5.2 inches)82%high
November Weather4°C (40°F)56 mm (2.2 inches)88%moderate
December Weather1°C (34°F)56 mm (2.2 inches)84%low

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