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December Weather in White Salmon, United States

Last updated: June 24, 2025

In December, the average temperature in White Salmon, United States hovers around 2°C (35°F), with minimums dipping to -13°C (9°F) and maximums peaking at 16°C (61°F). Visitors can expect about 173 mm (6.8 in) of precipitation over approximately 18 days, contributing to an average humidity of 88%.

December Temperature in White Salmon

In December in White Salmon, the average temperature is 2°C (35°F), with maximums reaching up to 16°C (61°F) and minimums dropping as low as -13°C (9°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

December Weather in White Salmon: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in White Salmon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In White Salmon, December typically has an average temperature of 2°C (35°F), with highs reaching up to 16°C (61°F) and lows dropping to around -13°C (9°F).
JanFebMarAprMayJunJulAugSepOctNovDec343540475562697061494035
Data source: Temperature data for White Salmon 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 White Salmon

In White Salmon in December, the precipitation amount is 173 mm (6.8 in) over the course of 18 days.

December Precipitation Trends in White Salmon

The chart displays monthly precipitation patterns in White Salmon, 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 White Salmon, December typically receives around 173 mm (6.8 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec166178106913728244090133173
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in White Salmon

In White Salmon in December, humidity is 88%. With an average temperature of 2°C (35°F), this humidity feels like you're wrapped in a cold, damp blanket, making outdoor activities uncomfortable and travel challenging due to the chill seeping into your bones.

December Average Humidity in White Salmon

This chart illustrates the average monthly humidity levels in White Salmon, 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 White Salmon is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%87%86%85%80%82%79%63%59%78%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in White Salmon

In White Salmon 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 White Salmon, you can visit Hourly UV Index in White Salmon.

Maximum UV Index Levels in White Salmon for December

The chart shows the monthly maximum UV Index (UVI) for White Salmon 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 White Salmon typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101098532
Data source: White Salmon 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 White Salmon Compares to Other Months

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

This table compares monthly weather conditions in White Salmon, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)166 mm (6.5 inches)86%low
February Weather2°C (35°F)178 mm (7.0 inches)87%moderate
March Weather5°C (40°F)106 mm (4.2 inches)86%high
April Weather8°C (47°F)91 mm (3.6 inches)85%high
May Weather13°C (56°F)37 mm (1.4 inches)80%very high
June Weather17°C (63°F)28 mm (1.1 inches)82%very high
July Weather21°C (70°F)2 mm (0.1 inches)78%very high
August Weather21°C (70°F)4 mm (0.2 inches)62%very high
September Weather16°C (62°F)40 mm (1.6 inches)59%very high
October Weather9°C (49°F)90 mm (3.5 inches)78%moderate
November Weather5°C (41°F)133 mm (5.2 inches)88%moderate
December Weather2°C (35°F)173 mm (6.8 inches)88%low

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