December Weather in Downieville, United States

Last updated: June 24, 2025

In December, the average temperature in Downieville, United States hovers around 2°C (35°F). Be prepared for a chilly range, with minimums dipping as low as -10°C (14°F) and potential highs reaching up to 19°C (66°F). During this time, expect 215 mm (8.5 in) of precipitation spread over 12 days, contributing to a notable average humidity of 83%.

December Temperature in Downieville

In December in Downieville, the average temperature is 2°C (35°F), with maximums reaching 19°C (66°F) and minimums dropping as low as -10°C (14°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm layers and lighter clothing for any warmer days.

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

The chart illustrates December temperature patterns in Downieville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Downieville, December typically has an average temperature of 2°C (35°F), with highs reaching up to 19°C (66°F) and lows dropping to around -10°C (14°F).

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

December Precipitation in Downieville

In Downieville in December, the total precipitation amount is 215 mm (8.5 in), spread over a span of 12 days.

December Precipitation Trends in Downieville

The chart displays monthly precipitation patterns in Downieville, 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 Downieville, December typically receives around 215 mm (8.5 inches) of precipitation spread over approximately 12 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 Downieville

In Downieville in December humidity is 83%. With an average temperature of 2°C (35°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel quite taxing.

December Average Humidity in Downieville

This chart illustrates the average monthly humidity levels in Downieville, 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 Downieville 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 Downieville

In Downieville 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 Downieville, you can check the information here.

Maximum UV Index Levels in Downieville for December

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

Data source: Downieville 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 Downieville Compares to Other Months

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

This table compares monthly weather conditions in Downieville, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (35°F)	269 mm (10.6 inches)	84%	moderate
February Weather	2°C (36°F)	279 mm (11.0 inches)	84%	moderate
March Weather	3°C (38°F)	261 mm (10.3 inches)	83%	very high
April Weather	7°C (45°F)	130 mm (5.1 inches)	81%	very high
May Weather	11°C (53°F)	85 mm (3.4 inches)	74%	extreme
June Weather	17°C (63°F)	19 mm (0.8 inches)	64%	extreme
July Weather	22°C (71°F)	8 mm (0.3 inches)	44%	extreme
August Weather	21°C (70°F)	11 mm (0.4 inches)	36%	extreme
September Weather	17°C (62°F)	28 mm (1.1 inches)	44%	very high
October Weather	10°C (51°F)	72 mm (2.8 inches)	65%	high
November Weather	6°C (42°F)	148 mm (5.8 inches)	84%	moderate
December Weather	2°C (35°F)	215 mm (8.5 inches)	83%	moderate