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December Weather in Centralia, United States

Last updated: June 24, 2025

In Centralia, United States, the average temperature in December hovers around 2°C (36°F). Temperatures can vary significantly, with a minimum of -19°C (-3°F) and a maximum reaching 23°C (74°F). Expect precipitation of about 27 mm (1.1 in) over the course of 3 days, accompanied by an average humidity of 84%.

December Temperature in Centralia

In December in Centralia, the average temperature is 2°C (36°F). Maximum can reach 23°C (74°F), and minimum can be as low as -19°C (-3°F). Be prepared for a wide range of temperatures if you plan to travel during this month!

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

The chart illustrates December temperature patterns in Centralia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Centralia, December typically has an average temperature of 2°C (36°F), with highs reaching up to 23°C (74°F) and lows dropping to around -19°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec293045536477807671554336
Data source: Temperature data for Centralia 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 Centralia

In Centralia in December, the total precipitation amount is 27 mm (1.1 in) over the course of 3 days.

December Precipitation Trends in Centralia

The chart displays monthly precipitation patterns in Centralia, 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 Centralia, December typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec313193822089675108681163527
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Centralia

In Centralia in December, humidity is 84%. With an average temperature of 2°C (36°F), this humidity feels like a cold, damp blanket wrapping around you, making outdoor activities less inviting and requiring extra layers to stay comfortable while traveling.

December Average Humidity in Centralia

This chart illustrates the average monthly humidity levels in Centralia, 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 Centralia is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%78%70%73%82%82%81%78%71%71%81%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Centralia

In Centralia 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 Centralia, you can check the information here.

Maximum UV Index Levels in Centralia for December

The chart shows the monthly maximum UV Index (UVI) for Centralia 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 Centralia typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Centralia 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 Centralia Compares to Other Months

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

This table compares monthly weather conditions in Centralia, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)31 mm (1.2 inches)76%moderate
February Weather-1°C (30°F)31 mm (1.2 inches)77%moderate
March Weather7°C (45°F)93 mm (3.6 inches)70%high
April Weather12°C (53°F)82 mm (3.2 inches)73%very high
May Weather18°C (65°F)208 mm (8.2 inches)82%very high
June Weather25°C (77°F)96 mm (3.8 inches)82%extreme
July Weather27°C (80°F)75 mm (2.9 inches)81%extreme
August Weather24°C (76°F)108 mm (4.3 inches)78%very high
September Weather22°C (72°F)68 mm (2.7 inches)71%very high
October Weather13°C (55°F)116 mm (4.6 inches)71%high
November Weather6°C (43°F)34 mm (1.4 inches)81%moderate
December Weather2°C (36°F)27 mm (1.1 inches)84%moderate

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