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December Weather in Caldwell, United States

Last updated: June 24, 2025

In December, the average temperature in Caldwell, United States hovers around 13°C (56°F). Expect a range from a chilly -3°C (27°F) to a warm 30°C (85°F). During this month, precipitation typically amounts to 101 mm (4.0 in) over 9 days, with an average humidity of a notable 87%. Stay prepared for varying conditions!

December Temperature in Caldwell

In December in Caldwell, the average temperature is 13°C (56°F), with maximums reaching up to 30°C (85°F) and minimums dropping as low as -3°C (27°F). This varied climate makes Caldwell an interesting destination for travelers looking to experience different weather conditions.

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

The chart illustrates December temperature patterns in Caldwell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Caldwell, December typically has an average temperature of 13°C (56°F), with highs reaching up to 30°C (85°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec525464687782858681716055
Data source: Temperature data for Caldwell 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 Caldwell

In Caldwell in December, the total precipitation amount is 101 mm (4.0 in), occurring over a span of 9 days.

December Precipitation Trends in Caldwell

The chart displays monthly precipitation patterns in Caldwell, 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 Caldwell, December typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec7073751371561158511912710272101
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Caldwell

In Caldwell in December humidity is 87%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it challenging to explore comfortably.

December Average Humidity in Caldwell

This chart illustrates the average monthly humidity levels in Caldwell, 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 Caldwell is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%80%78%79%81%77%71%67%69%73%82%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Caldwell

In Caldwell in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Caldwell.

Maximum UV Index Levels in Caldwell for December

The chart shows the monthly maximum UV Index (UVI) for Caldwell 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 Caldwell typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111112121110865
Data source: Caldwell 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 Caldwell Compares to Other Months

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

This table compares monthly weather conditions in Caldwell, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)70 mm (2.8 inches)79%moderate
February Weather12°C (54°F)73 mm (2.9 inches)80%very high
March Weather18°C (64°F)75 mm (3.0 inches)78%very high
April Weather20°C (69°F)137 mm (5.4 inches)79%extreme
May Weather25°C (77°F)156 mm (6.1 inches)81%extreme
June Weather28°C (83°F)115 mm (4.5 inches)77%extreme
July Weather29°C (85°F)85 mm (3.4 inches)71%extreme
August Weather30°C (87°F)119 mm (4.7 inches)67%extreme
September Weather27°C (81°F)127 mm (5.0 inches)69%very high
October Weather22°C (71°F)102 mm (4.0 inches)73%very high
November Weather16°C (61°F)72 mm (2.8 inches)82%high
December Weather13°C (56°F)101 mm (4.0 inches)87%moderate

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