December Weather in Sylvania, United States

Last updated: June 24, 2025

In December, the average temperature in Sylvania, United States hovers around 12°C (53°F). Expect a notable temperature range, with minimums dipping to -5°C (24°F) and highs reaching up to 26°C (80°F). This month sees an average precipitation of 119 mm (4.7 in) across 9 days, and the air is typically quite moist, with an average humidity of 87%. Stay prepared for a variety of weather conditions!

December Temperature in Sylvania

In December in Sylvania, the average temperature is 12°C (53°F). Maximums can reach 26°C (80°F), while minimums can drop as low as -5°C (24°F). Be prepared for a wide range of temperatures during your travels.

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

The chart illustrates December temperature patterns in Sylvania, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sylvania, December typically has an average temperature of 12°C (53°F), with highs reaching up to 26°C (80°F) and lows dropping to around -5°C (24°F).

Data source: Temperature data for Sylvania generated using information from the Copernicus Climate Change Service.

December Precipitation in Sylvania

In Sylvania in December, the precipitation amount is 119 mm (4.7 in) occurring over a span of 9 days.

December Precipitation Trends in Sylvania

The chart displays monthly precipitation patterns in Sylvania, 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 Sylvania, December typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Sylvania

In Sylvania in December, humidity is 87%. With an average temperature of 12°C (53°F), this humidity feels like a damp blanket enveloping you, making travel uncomfortable and stifling, as the air thickens and clings to your skin, sapping your energy as you navigate the sights.

December Average Humidity in Sylvania

This chart illustrates the average monthly humidity levels in Sylvania, 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 Sylvania is approximately 87%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sylvania

In Sylvania 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 Sylvania for better planning.

Maximum UV Index Levels in Sylvania for December

The chart shows the monthly maximum UV Index (UVI) for Sylvania 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 Sylvania typically reaches 4, which falls under the moderate exposure category.

Data source: Sylvania 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 Sylvania Compares to Other Months

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

This table compares monthly weather conditions in Sylvania, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (51°F)	84 mm (3.3 inches)	86%	moderate
February Weather	13°C (56°F)	102 mm (4.0 inches)	81%	high
March Weather	16°C (61°F)	67 mm (2.6 inches)	81%	very high
April Weather	19°C (67°F)	106 mm (4.2 inches)	79%	very high
May Weather	24°C (75°F)	86 mm (3.4 inches)	75%	extreme
June Weather	26°C (80°F)	126 mm (5.0 inches)	75%	extreme
July Weather	28°C (83°F)	129 mm (5.1 inches)	80%	extreme
August Weather	28°C (82°F)	132 mm (5.2 inches)	81%	extreme
September Weather	26°C (79°F)	82 mm (3.2 inches)	83%	very high
October Weather	22°C (71°F)	74 mm (2.9 inches)	78%	very high
November Weather	14°C (57°F)	61 mm (2.4 inches)	85%	high
December Weather	12°C (53°F)	119 mm (4.7 inches)	87%	moderate