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December Weather in Humboldt, United States

Last updated: June 24, 2025

In Humboldt, United States, the average temperature in December hovers around 1°C (35°F), with a minimum plunging to -21°C (-6°F) and a maximum peaking at 23°C (73°F). Expect 31 mm (1.2 in) of precipitation spread across 4 days, accompanied by an average humidity level of 83%, creating a chill that’s both brisk and invigorating.

December Temperature in Humboldt

In December in Humboldt, the average temperature is 1°C (35°F). The maximum can reach 23°C (73°F), and the minimum can be as low as -21°C (-6°F). Be prepared for a wide range of temperatures during your travels to Humboldt this month, as you'll experience both chilly and pleasantly warm days.

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 1°C (35°F), with highs reaching up to 23°C (73°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec282944526577807671554234
Data source: Temperature data for Humboldt generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Humboldt

In Humboldt in December, the total precipitation amount is 31 mm (1.2 in) over a span 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 31 mm (1.2 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec33319570164109102111791313331
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Humboldt

In Humboldt in December humidity is 83%. With an average temperature of 1°C (35°F), this humidity feels like a damp chill enveloping you, making travel uncomfortable as you contend with the biting cold paired with the heavy moisture in the air.

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.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%73%75%78%82%83%81%75%75%82%83%
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.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
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.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)33 mm (1.3 inches)76%moderate
February Weather-2°C (29°F)31 mm (1.2 inches)80%moderate
March Weather7°C (44°F)95 mm (3.7 inches)73%high
April Weather11°C (53°F)70 mm (2.8 inches)74%very high
May Weather18°C (65°F)164 mm (6.5 inches)78%very high
June Weather25°C (77°F)109 mm (4.3 inches)82%very high
July Weather26°C (80°F)102 mm (4.0 inches)83%very high
August Weather24°C (76°F)111 mm (4.4 inches)80%very high
September Weather22°C (71°F)79 mm (3.1 inches)75%very high
October Weather13°C (55°F)131 mm (5.1 inches)75%high
November Weather6°C (43°F)33 mm (1.3 inches)82%moderate
December Weather1°C (35°F)31 mm (1.2 inches)83%moderate

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