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December Weather in Libby, United States

Last updated: June 24, 2025

In December, the average temperature in Libby, United States is a chilly -3°C (26°F). Minimums can plunge to a frigid -26°C (-14°F), while maximums reach a cool 10°C (51°F). Expect precipitation of around 102 mm (4.0 in) spread over approximately 15 days, accompanied by a high average humidity of 96%. Bundle up!

December Temperature in Libby

In December in Libby, the average temperature is -3°C (26°F). Maximums can reach 10°C (51°F), while minimums can drop as low as -26°C (-14°F). Be sure to pack warm clothing and prepare for cold conditions if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Libby, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Libby, December typically has an average temperature of -3°C (26°F), with highs reaching up to 10°C (51°F) and lows dropping to around -26°C (-14°F).
JanFebMarAprMayJunJulAugSepOctNovDec231931395158676655413226
Data source: Temperature data for Libby 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 Libby

In Libby in December, the precipitation amount is 102 mm (4.0 in) over the course of 15 days.

December Precipitation Trends in Libby

The chart displays monthly precipitation patterns in Libby, 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 Libby, December typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec7695667466451625448792102
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Libby

In Libby in December, humidity is 96%. With an average temperature of -3°C (26°F), this humidity feels like walking through a dense fog, where the cold air clings to your skin and makes every step feel heavier, turning your travel experience into a damp and challenging adventure.

December Average Humidity in Libby

This chart illustrates the average monthly humidity levels in Libby, 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 Libby is approximately 96%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%93%91%88%83%80%82%71%71%85%90%96%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Libby

In Libby 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 Libby, you can visit Hourly UV Index in Libby.

Maximum UV Index Levels in Libby for December

The chart shows the monthly maximum UV Index (UVI) for Libby 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 Libby typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246799997532
Data source: Libby 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 Libby Compares to Other Months

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

This table compares monthly weather conditions in Libby, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)76 mm (3.0 inches)95%low
February Weather-7°C (20°F)95 mm (3.8 inches)93%moderate
March Weather0°C (32°F)66 mm (2.6 inches)91%high
April Weather4°C (39°F)74 mm (2.9 inches)88%high
May Weather10°C (51°F)66 mm (2.6 inches)83%very high
June Weather15°C (59°F)45 mm (1.8 inches)80%very high
July Weather20°C (68°F)16 mm (0.6 inches)82%very high
August Weather19°C (66°F)25 mm (1.0 inches)71%very high
September Weather13°C (55°F)44 mm (1.7 inches)71%high
October Weather5°C (41°F)87 mm (3.4 inches)85%moderate
November Weather0°C (32°F)92 mm (3.6 inches)90%moderate
December Weather-3°C (26°F)102 mm (4.0 inches)96%low

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