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December Weather in DeCordova, United States

Last updated: June 24, 2025

In December, the average temperature in DeCordova, United States hovers around 11°C (52°F). Temperatures can swing from a chilly -5°C (23°F) to a sizzling 30°C (86°F). Expect 46 mm (1.8 in) of precipitation spread over 4 days, with an average humidity of 85% keeping the atmosphere pleasantly crisp.

December Temperature in DeCordova

In December in DeCordova, the average temperature is 11°C (52°F), with maximums reaching 30°C (86°F) and minimums dropping as low as -5°C (23°F). This varied climate makes DeCordova a versatile destination for travelers, so be sure to pack for a range of temperatures!

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

The chart illustrates December temperature patterns in DeCordova, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In DeCordova, December typically has an average temperature of 11°C (52°F), with highs reaching up to 30°C (86°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec474961667582868579685752
Data source: Temperature data for DeCordova 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 DeCordova

In DeCordova in December, the precipitation amount is 46 mm (1.8 in) over the course of 4 days.

December Precipitation Trends in DeCordova

The chart displays monthly precipitation patterns in DeCordova, 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 DeCordova, December typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec44798490127823884761214446
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in DeCordova

In DeCordova in December, humidity is 85%. With an average temperature of 11°C (52°F), this humidity feels like a damp blanket wrapping around you, making travel quite uncomfortable as the air feels heavy and can sap your energy.

December Average Humidity in DeCordova

This chart illustrates the average monthly humidity levels in DeCordova, 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 DeCordova is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%74%75%80%80%75%67%64%70%82%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in DeCordova

In DeCordova in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in DeCordova for better planning.

Maximum UV Index Levels in DeCordova for December

The chart shows the monthly maximum UV Index (UVI) for DeCordova 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 DeCordova typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101111111110864
Data source: DeCordova 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 DeCordova Compares to Other Months

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

This table compares monthly weather conditions in DeCordova, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)44 mm (1.7 inches)77%moderate
February Weather10°C (49°F)79 mm (3.1 inches)76%high
March Weather16°C (61°F)84 mm (3.3 inches)74%very high
April Weather19°C (66°F)90 mm (3.5 inches)75%very high
May Weather24°C (75°F)127 mm (5.0 inches)80%extreme
June Weather28°C (82°F)82 mm (3.2 inches)80%extreme
July Weather30°C (86°F)38 mm (1.5 inches)75%extreme
August Weather29°C (85°F)84 mm (3.3 inches)67%extreme
September Weather26°C (79°F)76 mm (3.0 inches)64%very high
October Weather20°C (68°F)121 mm (4.8 inches)70%very high
November Weather14°C (57°F)44 mm (1.7 inches)82%high
December Weather11°C (52°F)46 mm (1.8 inches)85%moderate

Compare DeCordova's Climate with Cities Worldwide