December Weather in Soap Lake, United States

Last updated: June 24, 2025

In Soap Lake, United States, the average temperature in December hovers around -1°C (30°F). Expect a minimum chill of -18°C (0°F) and a maximum warmth reaching 17°C (62°F). During this month, precipitation totals around 43 mm (1.7 in) over approximately 10 days, while the average humidity stays high at 86%.

December Temperature in Soap Lake

In December in Soap Lake, the average temperature is -1°C (30°F), with maximums reaching 17°C (62°F) and minimums dipping as low as -18°C (0°F). It’s essential to pack layers and be prepared for a wide range of temperatures while enjoying your travels.

December Weather in Soap Lake: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Soap Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Soap Lake, December typically has an average temperature of -1°C (30°F), with highs reaching up to 17°C (62°F) and lows dropping to around -18°C (0°F).
JanFebMarAprMayJunJulAugSepOctNovDec283041506269777665493830
Data source: Temperature data for Soap Lake 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 Soap Lake

In Soap Lake in December, the precipitation amount is 43 mm (1.7 in) over a span of 10 days.

December Precipitation Trends in Soap Lake

The chart displays monthly precipitation patterns in Soap Lake, 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 Soap Lake, December typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec514031292083418354043
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Soap Lake

In Soap Lake in December, humidity is 86%. With an average temperature of -1°C (30°F), this humidity feels like a heavy blanket wrapping around you, making traveling feel much colder and more uncomfortable than the temperature suggests.

December Average Humidity in Soap Lake

This chart illustrates the average monthly humidity levels in Soap Lake, 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 Soap Lake is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%82%77%79%77%62%60%80%87%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Soap Lake

In Soap Lake 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 Soap Lake, you can visit Hourly UV Index in Soap Lake.

Maximum UV Index Levels in Soap Lake for December

The chart shows the monthly maximum UV Index (UVI) for Soap Lake 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 Soap Lake typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2456891097532
Data source: Soap Lake 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 Soap Lake Compares to Other Months

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

This table compares monthly weather conditions in Soap Lake, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)51 mm (2.0 inches)85%low
February Weather-1°C (30°F)40 mm (1.6 inches)86%moderate
March Weather5°C (42°F)31 mm (1.2 inches)86%moderate
April Weather10°C (51°F)29 mm (1.2 inches)82%high
May Weather17°C (62°F)20 mm (0.8 inches)77%very high
June Weather21°C (69°F)8 mm (0.3 inches)79%very high
July Weather25°C (77°F)3 mm (0.1 inches)77%very high
August Weather24°C (76°F)4 mm (0.1 inches)62%very high
September Weather18°C (65°F)18 mm (0.7 inches)60%high
October Weather9°C (49°F)35 mm (1.4 inches)80%moderate
November Weather4°C (39°F)40 mm (1.6 inches)87%moderate
December Weather-1°C (30°F)43 mm (1.7 inches)86%low

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