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December Weather in Billings, United States

Last updated: June 24, 2025

In Billings, United States, the average temperature for December hovers around 5°C (42°F). During this time, temperatures can range from a chilly -11°C (13°F) to a warm 26°C (79°F). Prepare for a bit of moisture, as the area typically sees about 29 mm (1.1 in) of precipitation over 2 days. Furthermore, the average humidity is a notable 83%, making it feel even cooler!

December Temperature in Billings

In December in Billings, the average temperature is 5°C (42°F), with maximums soaring to 26°C (79°F) and minimums plummeting to as low as -11°C (13°F). Be sure to pack a variety of clothing to stay comfortable during your travels, as the temperature can vary greatly throughout the day.

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

The chart illustrates December temperature patterns in Billings, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Billings, December typically has an average temperature of 5°C (42°F), with highs reaching up to 26°C (79°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec373852586979838075614842
Data source: Temperature data for Billings 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 Billings

In Billings in December, the precipitation amount is 29 mm (1.1 in) over the course of 2 days.

December Precipitation Trends in Billings

The chart displays monthly precipitation patterns in Billings, 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 Billings, December typically receives around 29 mm (1.1 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec453589911581165887781112829
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Billings

In Billings in December, humidity is 83%. With an average temperature of 5°C (42°F), this humidity feels like a heavy blanket wrapping around you, making even the simplest outdoor activities feel exhausting and uncomfortable for traveling.

December Average Humidity in Billings

This chart illustrates the average monthly humidity levels in Billings, 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 Billings is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%76%67%70%82%82%81%76%67%72%80%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Billings

In Billings in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Billings, you can check the information here.

Maximum UV Index Levels in Billings for December

The chart shows the monthly maximum UV Index (UVI) for Billings 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 Billings typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710101111109753
Data source: Billings 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 Billings Compares to Other Months

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

This table compares monthly weather conditions in Billings, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)45 mm (1.8 inches)75%moderate
February Weather4°C (39°F)35 mm (1.4 inches)76%high
March Weather11°C (52°F)89 mm (3.5 inches)67%high
April Weather15°C (59°F)91 mm (3.6 inches)70%very high
May Weather20°C (69°F)158 mm (6.2 inches)82%very high
June Weather26°C (80°F)116 mm (4.5 inches)82%extreme
July Weather28°C (83°F)57 mm (2.3 inches)81%extreme
August Weather27°C (81°F)87 mm (3.4 inches)76%very high
September Weather24°C (76°F)78 mm (3.1 inches)67%very high
October Weather16°C (61°F)111 mm (4.4 inches)72%high
November Weather9°C (49°F)28 mm (1.1 inches)80%moderate
December Weather5°C (42°F)29 mm (1.1 inches)83%moderate

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