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December Weather in Bison, United States

Last updated: June 24, 2025

In December, the average temperature in Bison, United States hovers around -3°C (27°F). Expect a minimum chill of -27°C (-17°F) and a surprising maximum warmth of 21°C (69°F). During this month, 21 mm (0.8 in) of precipitation falls over approximately 4 days, contributing to an average humidity of 79%. Stay prepared for the fluctuations!

December Temperature in Bison

In December in Bison, the average temperature is -3°C (27°F). Maximums can reach 21°C (69°F), while minimums can drop as low as -27°C (-17°F). It's essential to pack for a wide range of temperatures when visiting during this month.

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

The chart illustrates December temperature patterns in Bison, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bison, December typically has an average temperature of -3°C (27°F), with highs reaching up to 21°C (69°F) and lows dropping to around -27°C (-17°F).
JanFebMarAprMayJunJulAugSepOctNovDec211732415569757162443426
Data source: Temperature data for Bison 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 Bison

In Bison in December, the precipitation amount is 21 mm (0.8 in) over a span of 4 days.

December Precipitation Trends in Bison

The chart displays monthly precipitation patterns in Bison, 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 Bison, December typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec111827538046645438541221
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Bison

In Bison in December, humidity is 79%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and necessitating extra layers to stay warm.

December Average Humidity in Bison

This chart illustrates the average monthly humidity levels in Bison, 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 Bison is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%70%70%76%84%85%85%77%73%74%79%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Bison

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

Maximum UV Index Levels in Bison for December

The chart shows the monthly maximum UV Index (UVI) for Bison 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 Bison typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24599101098532
Data source: Bison 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 Bison Compares to Other Months

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

This table compares monthly weather conditions in Bison, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)11 mm (0.4 inches)77%low
February Weather-8°C (17°F)18 mm (0.7 inches)80%moderate
March Weather0°C (33°F)27 mm (1.1 inches)70%moderate
April Weather5°C (42°F)53 mm (2.1 inches)70%very high
May Weather13°C (55°F)80 mm (3.1 inches)76%very high
June Weather21°C (69°F)46 mm (1.8 inches)84%very high
July Weather24°C (75°F)64 mm (2.5 inches)85%very high
August Weather22°C (71°F)54 mm (2.1 inches)84%very high
September Weather17°C (62°F)38 mm (1.5 inches)77%very high
October Weather7°C (45°F)54 mm (2.1 inches)73%moderate
November Weather1°C (35°F)12 mm (0.5 inches)74%moderate
December Weather-3°C (27°F)21 mm (0.8 inches)79%low

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