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December Weather in Millwood, United States

Last updated: June 24, 2025

In December, the average temperature in Millwood, United States hovers around 1°C (35°F), with extremes ranging from a chilly -21°C (-5°F) to a mild 18°C (65°F). Expect 118 mm (4.6 in) of precipitation spread over 15 days, contributing to an average humidity of 88%. Prepare for a brisk and damp atmosphere as you explore this captivating destination!

December Temperature in Millwood

In December in Millwood, the average temperature is 1°C (35°F), with maxima reaching up to 18°C (65°F) and minima dropping as low as -21°C (-5°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates December temperature patterns in Millwood, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Millwood, December typically has an average temperature of 1°C (35°F), with highs reaching up to 18°C (65°F) and lows dropping to around -21°C (-5°F).
JanFebMarAprMayJunJulAugSepOctNovDec293440506168737165554035
Data source: Temperature data for Millwood 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 Millwood

In Millwood in December, the precipitation amount is 118 mm (4.6 in) over the course of 15 days.

December Precipitation Trends in Millwood

The chart displays monthly precipitation patterns in Millwood, 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 Millwood, December typically receives around 118 mm (4.6 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec961351181381591541219212311796118
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Millwood

In Millwood in December, humidity is 88%. With an average temperature of 1°C (35°F), this humidity feels like a chilly embrace, making travel quite uncomfortable as the cold moisture clings to your skin, leaving you feeling damp and frigid.

December Average Humidity in Millwood

This chart illustrates the average monthly humidity levels in Millwood, 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 Millwood is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%89%88%80%79%74%64%67%81%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Millwood

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

Maximum UV Index Levels in Millwood for December

The chart shows the monthly maximum UV Index (UVI) for Millwood 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 Millwood typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098642
Data source: Millwood 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 Millwood Compares to Other Months

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

This table compares monthly weather conditions in Millwood, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)96 mm (3.8 inches)89%moderate
February Weather1°C (34°F)135 mm (5.3 inches)90%moderate
March Weather4°C (40°F)117 mm (4.6 inches)89%high
April Weather10°C (50°F)137 mm (5.4 inches)88%very high
May Weather16°C (61°F)158 mm (6.2 inches)80%very high
June Weather20°C (68°F)154 mm (6.1 inches)79%very high
July Weather23°C (73°F)121 mm (4.8 inches)74%very high
August Weather22°C (71°F)92 mm (3.6 inches)64%very high
September Weather19°C (66°F)123 mm (4.8 inches)67%very high
October Weather13°C (56°F)116 mm (4.6 inches)81%high
November Weather5°C (41°F)96 mm (3.8 inches)89%moderate
December Weather1°C (35°F)118 mm (4.6 inches)88%low

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