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December Weather in Concord, United States

Last updated: June 24, 2025

In December, the average temperature in Concord, United States hovers around -1°C (30°F). Expect chilly conditions, with minimums dipping as low as -22°C (-8°F) and occasional highs reaching 19°C (66°F). During this month, precipitation averages 46 mm (1.8 in) across about 7 days, contributing to an overall humidity level of 81%. Stay warm and prepared for a wet, brisk climate!

December Temperature in Concord

In December in Concord, the average temperature is -1°C (30°F), with a maximum that can reach 19°C (66°F) and a minimum that can drop as low as -22°C (-8°F). Travelers should be prepared for a wide range of temperatures, so packing layers is essential for comfort.

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

The chart illustrates December temperature patterns in Concord, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Concord, December typically has an average temperature of -1°C (30°F), with highs reaching up to 19°C (66°F) and lows dropping to around -22°C (-8°F).
JanFebMarAprMayJunJulAugSepOctNovDec222336465970757265523730
Data source: Temperature data for Concord 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 Concord

In Concord in December, the precipitation amount is 46 mm (1.8 in) over the course of 7 days.

December Precipitation Trends in Concord

The chart displays monthly precipitation patterns in Concord, 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 Concord, December typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec5651601081291119986971134646
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Concord

In Concord in December, humidity is 81%. With an average temperature of -1°C (30°F), this humidity feels like an extra layer of chill settles in, making travel uncomfortable and the cold air cling to your skin, dampening the experience with every breath.

December Average Humidity in Concord

This chart illustrates the average monthly humidity levels in Concord, 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 Concord is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Concord

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

Maximum UV Index Levels in Concord for December

The chart shows the monthly maximum UV Index (UVI) for Concord 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 Concord typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101097532
Data source: Concord 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 Concord Compares to Other Months

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

This table compares monthly weather conditions in Concord, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)56 mm (2.2 inches)85%moderate
February Weather-5°C (24°F)51 mm (2.0 inches)85%moderate
March Weather2°C (36°F)60 mm (2.4 inches)85%moderate
April Weather8°C (46°F)108 mm (4.3 inches)85%very high
May Weather15°C (59°F)129 mm (5.1 inches)78%very high
June Weather21°C (70°F)111 mm (4.4 inches)80%very high
July Weather24°C (75°F)99 mm (3.9 inches)78%very high
August Weather22°C (72°F)86 mm (3.4 inches)76%very high
September Weather18°C (66°F)97 mm (3.8 inches)79%high
October Weather11°C (52°F)113 mm (4.5 inches)83%moderate
November Weather3°C (37°F)46 mm (1.8 inches)88%moderate
December Weather-1°C (30°F)46 mm (1.8 inches)81%low

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