December Weather in Humboldt, United States

Last updated: June 24, 2025

In December, the average temperature in Humboldt, United States hovers around -2°C (28°F). While chilly conditions can plummet to a frigid -23°C (-9°F), they can also rise to a surprisingly warm 21°C (69°F). Expect some moisture, with 39 mm (1.5 in) of precipitation spread over about 4 days, and a notable average humidity level of 83%. Prepare accordingly!

December Temperature in Humboldt

In December in Humboldt, the average temperature is -2°C (28°F), with a maximum that can reach 21°C (69°F) and a minimum that can drop as low as -23°C (-9°F). Be prepared for a wide range of temperatures when traveling to Humboldt during this month.

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

The chart illustrates December temperature patterns in Humboldt, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Humboldt, December typically has an average temperature of -2°C (28°F), with highs reaching up to 21°C (69°F) and lows dropping to around -23°C (-9°F).

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

December Precipitation in Humboldt

In Humboldt in December, the precipitation amount is 39 mm (1.5 in) spread over a period of 4 days.

December Precipitation Trends in Humboldt

The chart displays monthly precipitation patterns in Humboldt, 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 Humboldt, December typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 4 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 Humboldt

In Humboldt in December, humidity is 83%. With an average temperature of -2°C (28°F), this humidity feels like a biting chill that penetrates your clothes, making outdoor activities uncomfortable and travel challenging.

December Average Humidity in Humboldt

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

In Humboldt 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 Humboldt, you can check the information here.

Maximum UV Index Levels in Humboldt for December

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

Data source: Humboldt 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 Humboldt Compares to Other Months

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

This table compares monthly weather conditions in Humboldt, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	31 mm (1.2 inches)	82%	moderate
February Weather	-7°C (20°F)	46 mm (1.8 inches)	84%	moderate
March Weather	3°C (37°F)	75 mm (3.0 inches)	80%	moderate
April Weather	8°C (47°F)	77 mm (3.0 inches)	81%	very high
May Weather	16°C (61°F)	159 mm (6.3 inches)	74%	very high
June Weather	23°C (74°F)	120 mm (4.7 inches)	80%	extreme
July Weather	24°C (76°F)	86 mm (3.4 inches)	80%	very high
August Weather	22°C (72°F)	114 mm (4.5 inches)	77%	very high
September Weather	19°C (67°F)	119 mm (4.7 inches)	75%	very high
October Weather	10°C (50°F)	112 mm (4.4 inches)	80%	moderate
November Weather	2°C (36°F)	42 mm (1.7 inches)	87%	moderate
December Weather	-2°C (28°F)	39 mm (1.5 inches)	83%	moderate