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December Weather in Polson, United States

Last updated: June 24, 2025

In December, the average temperature in Polson, United States hovers around -1°C (30°F), with a chilling minimum of -17°C (1°F) and a maximum reaching 14°C (58°F). Travelers should be prepared for 71 mm (2.8 in) of precipitation spread over 17 days, accompanied by a high average humidity of 95%.

December Temperature in Polson

In December in Polson, the average temperature is -1°C (30°F). Maximums can reach 14°C (58°F), while minimums can drop as low as -17°C (1°F). Travelers should be prepared for cold weather and bring appropriate clothing for both mild and frigid conditions.

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

The chart illustrates December temperature patterns in Polson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Polson, December typically has an average temperature of -1°C (30°F), with highs reaching up to 14°C (58°F) and lows dropping to around -17°C (1°F).
JanFebMarAprMayJunJulAugSepOctNovDec262334415260696858433529
Data source: Temperature data for Polson 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 Polson

In Polson in December, the total precipitation amount is 71 mm (2.8 in) over the course of 17 days.

December Precipitation Trends in Polson

The chart displays monthly precipitation patterns in Polson, 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 Polson, December typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec518953787159162439717471
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Polson

In Polson in December humidity is 95%. With an average temperature of -1°C (30°F), this humidity feels like a frigid cold that seeps into your bones, making it quite uncomfortable for traveling as the dampness clings to your skin and exacerbates the chill in the air.

December Average Humidity in Polson

This chart illustrates the average monthly humidity levels in Polson, 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 Polson is approximately 95%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%89%85%80%78%77%66%67%77%89%95%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Polson

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

Maximum UV Index Levels in Polson for December

The chart shows the monthly maximum UV Index (UVI) for Polson 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 Polson typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2467991097532
Data source: Polson 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 Polson Compares to Other Months

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

This table compares monthly weather conditions in Polson, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)51 mm (2.0 inches)93%low
February Weather-5°C (23°F)89 mm (3.5 inches)92%moderate
March Weather1°C (34°F)53 mm (2.1 inches)89%high
April Weather5°C (41°F)78 mm (3.1 inches)85%high
May Weather11°C (52°F)71 mm (2.8 inches)80%very high
June Weather16°C (60°F)59 mm (2.3 inches)78%very high
July Weather21°C (69°F)16 mm (0.6 inches)77%very high
August Weather20°C (68°F)24 mm (0.9 inches)66%very high
September Weather14°C (58°F)39 mm (1.5 inches)67%high
October Weather6°C (44°F)71 mm (2.8 inches)77%moderate
November Weather2°C (35°F)74 mm (2.9 inches)89%moderate
December Weather-1°C (30°F)71 mm (2.8 inches)95%low

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