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May Weather in Petrolia, United States

Last updated: June 24, 2025

In Petrolia, United States, the average temperature in May hovers around 23°C (74°F), making it a mild and pleasant time of year. However, temperatures can swing from a chilly 5°C (42°F) to a scorching 39°C (103°F). Expect about 129 mm (5.1 in) of precipitation spread over 11 days, contributing to the area's 80% average humidity. Whether you're planning indoor activities or outdoor adventures, be prepared for a mix of weather!

May Temperature in Petrolia

In May in Petrolia, the average temperature is 23°C (74°F). Maximums can reach 39°C (103°F), while minimums can drop as low as 5°C (42°F). Be sure to pack for both warm days and cool nights when traveling to Petrolia during this time.

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

The chart illustrates May temperature patterns in Petrolia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Petrolia, May typically has an average temperature of 23°C (74°F), with highs reaching up to 39°C (103°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec434558647382878579665448
Data source: Temperature data for Petrolia 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 Petrolia

In Petrolia in May, the precipitation amount is 129 mm (5.1 in) spread over 11 days, indicating a wet period for the area.

May Precipitation Trends in Petrolia

The chart displays monthly precipitation patterns in Petrolia, 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 Petrolia, May typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec4455787612948255793903846
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Petrolia

In Petrolia in May humidity is 80%. With an average temperature of 23°C (74°F), this humidity feels like walking through a warm, damp blanket, making travel feel sticky and muggy, where every step leaves you yearning for a cool breeze.

May Average Humidity in Petrolia

This chart illustrates the average monthly humidity levels in Petrolia, 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 Petrolia is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%74%75%80%80%75%67%64%70%82%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Petrolia

In Petrolia in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Petrolia.

Maximum UV Index Levels in Petrolia for May

The chart shows the monthly maximum UV Index (UVI) for Petrolia 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 Petrolia typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110854
Data source: Petrolia 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 Petrolia Compares to Other Months

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

This table compares monthly weather conditions in Petrolia, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)44 mm (1.7 inches)77%moderate
February Weather7°C (46°F)55 mm (2.2 inches)76%high
March Weather14°C (58°F)78 mm (3.1 inches)74%very high
April Weather18°C (64°F)76 mm (3.0 inches)75%very high
May Weather23°C (74°F)129 mm (5.1 inches)80%extreme
June Weather28°C (82°F)48 mm (1.9 inches)80%extreme
July Weather30°C (87°F)25 mm (1.0 inches)75%extreme
August Weather30°C (86°F)57 mm (2.2 inches)67%extreme
September Weather26°C (79°F)93 mm (3.7 inches)64%very high
October Weather19°C (66°F)90 mm (3.5 inches)70%very high
November Weather12°C (54°F)38 mm (1.5 inches)82%moderate
December Weather9°C (48°F)46 mm (1.8 inches)85%moderate

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