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December Weather in International Falls, United States

Last updated: June 24, 2025

In International Falls, United States, the average temperature in December hovers around -10°C (15°F), but don’t be surprised by extremes; lows can plummet to -38°C (-35°F) while highs may reach up to 7°C (45°F). Expect around 43 mm (1.7 in) of precipitation spread over 9 days, and brace yourself for a chilly atmosphere, with an average humidity of 96%.

December Temperature in International Falls

In December in International Falls, the average temperature is -10°C (15°F). Maximums can reach 7°C (45°F), while minimums can plummet to as low as -38°C (-35°F). Travelers should be well-prepared for extreme cold and varying temperatures during this time.

December Weather in International Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in International Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In International Falls, December typically has an average temperature of -10°C (15°F), with highs reaching up to 7°C (45°F) and lows dropping to around -38°C (-35°F).
JanFebMarAprMayJunJulAugSepOctNovDec8826375465696657432614
Data source: Temperature data for International Falls 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 International Falls

In International Falls in December, the precipitation amount reaches 43 mm (1.7 in) over the course of 9 days.

December Precipitation Trends in International Falls

The chart displays monthly precipitation patterns in International Falls, 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 International Falls, December typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec2428264949847570138933843
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in International Falls

In International Falls in December, humidity is 96%. With an average temperature of -10°C (15°F), this humidity feels like a chilling mist that clings to your skin, making every breath crisp and biting, and causing everything around you to feel damp and frosty, which can be quite uncomfortable for traveling.

December Average Humidity in International Falls

This chart illustrates the average monthly humidity levels in International Falls, 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 International Falls is approximately 96%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%95%92%85%75%71%70%72%75%82%90%96%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in International Falls

In International Falls in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in International Falls.

Maximum UV Index Levels in International Falls for December

The chart shows the monthly maximum UV Index (UVI) for International Falls 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 International Falls typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789987421
Data source: International Falls 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 International Falls Compares to Other Months

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

This table compares monthly weather conditions in International Falls, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-13°C (8°F)24 mm (0.9 inches)96%low
February Weather-14°C (8°F)27 mm (1.1 inches)95%moderate
March Weather-3°C (26°F)26 mm (1.0 inches)92%moderate
April Weather3°C (38°F)49 mm (1.9 inches)85%high
May Weather12°C (54°F)49 mm (1.9 inches)75%very high
June Weather18°C (65°F)84 mm (3.3 inches)71%very high
July Weather21°C (70°F)75 mm (3.0 inches)70%very high
August Weather19°C (66°F)70 mm (2.7 inches)72%very high
September Weather14°C (57°F)138 mm (5.4 inches)75%high
October Weather6°C (43°F)93 mm (3.6 inches)82%moderate
November Weather-3°C (26°F)38 mm (1.5 inches)90%low
December Weather-10°C (15°F)43 mm (1.7 inches)96%low

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