December Weather in Redding, United States

Last updated: June 24, 2025

In December, the average temperature in Redding, United States is a brisk 8°C (46°F). Expect a minimum of -1°C (30°F) and a maximum of 22°C (73°F), making layering essential for your outings. Additionally, with 149 mm (5.9 in) of precipitation spread over 11 days, it's wise to carry an umbrella. The air remains notably damp, with an average humidity of 86%, enhancing that chilly feel.

December Temperature in Redding

In December in Redding, the average temperature is 8°C (46°F). Maximum temperatures can reach 22°C (73°F), while the minimum can drop to as low as -1°C (30°F). Whether you're exploring the sights or enjoying outdoor activities, be prepared for a wide range of temperatures during your visit.

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

The chart illustrates December temperature patterns in Redding, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Redding, December typically has an average temperature of 8°C (46°F), with highs reaching up to 22°C (73°F) and lows dropping to around -1°C (30°F).

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

December Precipitation in Redding

In Redding in December, the total precipitation amount is 149 mm (5.9 in) spread over 11 days.

December Precipitation Trends in Redding

The chart displays monthly precipitation patterns in Redding, 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 Redding, December typically receives around 149 mm (5.9 inches) of precipitation spread over approximately 11 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 Redding

In Redding in December humidity is 86%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while exploring.

December Average Humidity in Redding

This chart illustrates the average monthly humidity levels in Redding, 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 Redding is approximately 86%, 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 Redding

In Redding in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Redding, you can visit Hourly UV Index in Redding.

Maximum UV Index Levels in Redding for December

The chart shows the monthly maximum UV Index (UVI) for Redding 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 Redding typically reaches 2, which falls under the low exposure category.

Data source: Redding 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 Redding Compares to Other Months

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

This table compares monthly weather conditions in Redding, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	213 mm (8.4 inches)	86%	moderate
February Weather	9°C (49°F)	192 mm (7.5 inches)	85%	moderate
March Weather	11°C (52°F)	187 mm (7.4 inches)	85%	high
April Weather	15°C (59°F)	92 mm (3.6 inches)	82%	very high
May Weather	20°C (68°F)	59 mm (2.3 inches)	81%	very high
June Weather	25°C (78°F)	8 mm (0.3 inches)	79%	extreme
July Weather	30°C (86°F)	1 mm (0.0 inches)	70%	very high
August Weather	28°C (83°F)	2 mm (0.1 inches)	60%	very high
September Weather	24°C (75°F)	9 mm (0.3 inches)	62%	very high
October Weather	17°C (64°F)	66 mm (2.6 inches)	72%	high
November Weather	12°C (54°F)	123 mm (4.8 inches)	87%	moderate
December Weather	8°C (46°F)	149 mm (5.9 inches)	86%	low