December Weather in Humboldt, United States

Last updated: June 24, 2025

In Humboldt, United States, the average temperature in December hovers around -4°C (26°F). Expect chills with minimums plunging to -24°C (-12°F), while the mildest days can reach up to 15°C (60°F). During this month, the area sees around 37 mm (1.5 in) of precipitation spread over 4 days, and with an average humidity of 83%, it's a time when the atmosphere feels particularly crisp and cold.

December Temperature in Humboldt

In December in Humboldt, the average temperature is -4°C (26°F), with maximums reaching 15°C (60°F) and minimums dropping as low as -24°C (-12°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for their visit.

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 -4°C (26°F), with highs reaching up to 15°C (60°F) and lows dropping to around -24°C (-12°F).
JanFebMarAprMayJunJulAugSepOctNovDec191934435872747164473425
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 precipitation amount is 37 mm (1.5 in) over the course 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 37 mm (1.5 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec202263781197988104106762637
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 -4°C (26°F), this humidity feels like a chilling blanket that clings to your skin, making outdoor activities uncomfortable and forcing travelers to bundle up tightly, even as the cold penetrates through layers of clothing.

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.
JanFebMarAprMayJunJulAugSepOctNovDec80%84%75%79%74%81%82%80%75%77%85%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 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 Humboldt, you can visit Hourly UV Index in Humboldt.

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 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec25589111098532
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-7°C (19°F)20 mm (0.8 inches)80%low
February Weather-7°C (19°F)22 mm (0.9 inches)84%moderate
March Weather1°C (34°F)63 mm (2.5 inches)75%moderate
April Weather6°C (44°F)78 mm (3.1 inches)79%very high
May Weather15°C (58°F)119 mm (4.7 inches)74%very high
June Weather22°C (72°F)79 mm (3.1 inches)81%extreme
July Weather24°C (75°F)88 mm (3.5 inches)82%very high
August Weather22°C (71°F)104 mm (4.1 inches)80%very high
September Weather18°C (65°F)106 mm (4.2 inches)75%very high
October Weather8°C (48°F)76 mm (3.0 inches)77%moderate
November Weather1°C (34°F)26 mm (1.0 inches)85%moderate
December Weather-4°C (26°F)37 mm (1.5 inches)83%low

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