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December Weather in Brainerd, United States

Last updated: June 24, 2025

In December, the average temperature in Brainerd, United States hovers around -7°C (20°F). However, be prepared for extremes, as temperatures can plunge to a bone-chilling -30°C (-21°F) or rise to a mild 8°C (47°F). During this time, you can expect approximately 51 mm (2.0 in) of precipitation over 8 days, with an average humidity level of a brisk 89%.

December Temperature in Brainerd

In December in Brainerd, the average temperature is -7°C (20°F). The maximum can reach 8°C (47°F) and the minimum can dip as low as -30°C (-21°F). Travelers should be prepared for chilly conditions and dress warmly to fully enjoy the winter scenery.

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

The chart illustrates December temperature patterns in Brainerd, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brainerd, December typically has an average temperature of -7°C (20°F), with highs reaching up to 8°C (47°F) and lows dropping to around -30°C (-21°F).
JanFebMarAprMayJunJulAugSepOctNovDec131229405669726961453020
Data source: Temperature data for Brainerd 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 Brainerd

In Brainerd in December, the total precipitation amount is 51 mm (2.0 in), spread over a duration of 8 days.

December Precipitation Trends in Brainerd

The chart displays monthly precipitation patterns in Brainerd, 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 Brainerd, December typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec19244065738391981101072751
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Brainerd

In Brainerd in December humidity is 89%. With an average temperature of -7°C (20°F), this humidity feels like a biting chill that seeps into your bones, making travel quite uncomfortable as you navigate the frosty air that clings to every breath.

December Average Humidity in Brainerd

This chart illustrates the average monthly humidity levels in Brainerd, 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 Brainerd is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%88%83%76%76%76%77%77%82%88%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Brainerd

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

Maximum UV Index Levels in Brainerd for December

The chart shows the monthly maximum UV Index (UVI) for Brainerd 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 Brainerd typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457810987532
Data source: Brainerd 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 Brainerd Compares to Other Months

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

This table compares monthly weather conditions in Brainerd, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-11°C (13°F)19 mm (0.8 inches)92%low
February Weather-11°C (13°F)24 mm (0.9 inches)93%moderate
March Weather-1°C (30°F)40 mm (1.6 inches)88%moderate
April Weather4°C (40°F)64 mm (2.5 inches)83%high
May Weather13°C (56°F)73 mm (2.9 inches)76%very high
June Weather20°C (69°F)83 mm (3.2 inches)76%very high
July Weather22°C (73°F)91 mm (3.6 inches)76%very high
August Weather20°C (69°F)98 mm (3.9 inches)77%very high
September Weather16°C (61°F)110 mm (4.3 inches)77%high
October Weather7°C (46°F)107 mm (4.2 inches)82%moderate
November Weather-1°C (30°F)27 mm (1.1 inches)87%moderate
December Weather-7°C (20°F)51 mm (2.0 inches)89%low

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