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December Weather in Petrolia, United States

Last updated: June 24, 2025

In Petrolia, United States, the average temperature in December hovers around 9°C (48°F). Expect minimums that can dip to -7°C (19°F) and maximums soaring up to 31°C (88°F). This month typically brings about 46 mm (1.8 in) of precipitation over 4 days, contributing to an average humidity of 85%. Prepare for a mix of conditions as you enjoy this time of year!

December Temperature in Petrolia

In December in Petrolia, the average temperature is 9°C (48°F). Maximum temperatures can reach 31°C (88°F), while minimums can drop as low as -7°C (19°F). Be prepared for a wide range of temperatures when traveling to Petrolia during this month.

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

The chart illustrates December 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, December typically has an average temperature of 9°C (48°F), with highs reaching up to 31°C (88°F) and lows dropping to around -7°C (19°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.

December Precipitation in Petrolia

In Petrolia in December, the precipitation amount is 46 mm (1.8 in) over the course of 4 days.

December Precipitation Trends in Petrolia

The chart displays monthly precipitation patterns in Petrolia, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Petrolia, December typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec4455787612948255793903846
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Petrolia

In Petrolia in December humidity is 85%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay warm and comfortable while traveling.

December Average Humidity in Petrolia

This chart illustrates the average monthly humidity levels in Petrolia, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Petrolia is approximately 85%, 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in Petrolia

In Petrolia in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Petrolia for better planning.

Maximum UV Index Levels in Petrolia for December

The chart shows the monthly maximum UV Index (UVI) for Petrolia in December, 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 December, the maximum UV index in Petrolia typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110854
Data source: Petrolia December 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 December 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 December’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 December’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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