December Weather in Marysville, United States

Last updated: June 24, 2025

In December, the average temperature in Marysville, United States is a cool 9°C (48°F). Expect a range where the thermometer can dip to a brisk -2°C (28°F) or climb to a pleasant 25°C (76°F). Be prepared for some rainy days, with a total precipitation of 130 mm (5.1 in) over 10 days. Additionally, the air tends to be quite humid, with an average humidity level of 83%.

December Temperature in Marysville

In December in Marysville, the average temperature is 9°C (48°F). Maximum temperatures can reach 25°C (76°F), while minimums can drop as low as -2°C (28°F). This variation makes it essential for travelers to pack accordingly, ensuring they are prepared for both warm days and chilly nights.

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

The chart illustrates December temperature patterns in Marysville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marysville, December typically has an average temperature of 9°C (48°F), with highs reaching up to 25°C (76°F) and lows dropping to around -2°C (28°F).

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

December Precipitation in Marysville

In Marysville in December, the precipitation amount is 130 mm (5.1 in) over a period of 10 days.

December Precipitation Trends in Marysville

The chart displays monthly precipitation patterns in Marysville, 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 Marysville, December typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 10 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 Marysville

In Marysville in December humidity is 83%. With an average temperature of 9°C (48°F), this humidity feels like an enveloping blanket, making outdoor activities quite uncomfortable and encouraging travelers to seek shelter or shade frequently.

December Average Humidity in Marysville

This chart illustrates the average monthly humidity levels in Marysville, 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 Marysville is approximately 83%, 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 Marysville

In Marysville in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Marysville, you can check the information here.

Maximum UV Index Levels in Marysville for December

The chart shows the monthly maximum UV Index (UVI) for Marysville 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 Marysville typically reaches 3, which falls under the moderate exposure category.

Data source: Marysville 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 Marysville Compares to Other Months

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

This table compares monthly weather conditions in Marysville, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	154 mm (6.1 inches)	84%	moderate
February Weather	11°C (51°F)	155 mm (6.1 inches)	84%	moderate
March Weather	13°C (55°F)	145 mm (5.7 inches)	83%	high
April Weather	17°C (62°F)	68 mm (2.7 inches)	81%	very high
May Weather	21°C (70°F)	36 mm (1.4 inches)	74%	very high
June Weather	26°C (79°F)	6 mm (0.2 inches)	64%	extreme
July Weather	28°C (83°F)	1 mm (0.0 inches)	44%	very high
August Weather	27°C (81°F)	0 mm (0.0 inches)	36%	very high
September Weather	24°C (75°F)	6 mm (0.2 inches)	44%	very high
October Weather	18°C (65°F)	48 mm (1.9 inches)	65%	high
November Weather	13°C (55°F)	82 mm (3.2 inches)	84%	moderate
December Weather	9°C (48°F)	130 mm (5.1 inches)	83%	moderate