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December Weather in Arcadia, United States

Last updated: June 24, 2025

In December, the average temperature in Arcadia, United States hovers around 4°C (40°F). You can expect a minimum temperature that can dip as low as -14°C (7°F) and a pleasant maximum reaching up to 25°C (76°F). The area sees about 73 mm (2.9 in) of precipitation over approximately 7 days, contributing to an average humidity level of 86%. Be prepared for a variety of weather!

December Temperature in Arcadia

In December in Arcadia, the average temperature is 4°C (40°F). Maximums can reach 25°C (76°F) and minimums can be as low as -14°C (7°F). Be prepared for a wide range of temperatures during your travels, making layering essential for comfort.

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

The chart illustrates December temperature patterns in Arcadia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arcadia, December typically has an average temperature of 4°C (40°F), with highs reaching up to 25°C (76°F) and lows dropping to around -14°C (7°F).
JanFebMarAprMayJunJulAugSepOctNovDec343748556675797571584440
Data source: Temperature data for Arcadia 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 Arcadia

In Arcadia in December, the precipitation amount is 73 mm (2.9 in) during a span of 7 days.

December Precipitation Trends in Arcadia

The chart displays monthly precipitation patterns in Arcadia, 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 Arcadia, December typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec8610514416917194102103621207673
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Arcadia

In Arcadia in December humidity is 86%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel cumbersome as you navigate through a thick, heavy air that clings to your skin.

December Average Humidity in Arcadia

This chart illustrates the average monthly humidity levels in Arcadia, 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 Arcadia is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%81%80%80%83%83%76%69%68%72%83%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arcadia

In Arcadia 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 Arcadia, you can check the information here.

Maximum UV Index Levels in Arcadia for December

The chart shows the monthly maximum UV Index (UVI) for Arcadia 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 Arcadia typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Arcadia 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 Arcadia Compares to Other Months

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

This table compares monthly weather conditions in Arcadia, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)86 mm (3.4 inches)83%moderate
February Weather3°C (37°F)105 mm (4.1 inches)81%high
March Weather9°C (48°F)144 mm (5.7 inches)80%high
April Weather13°C (55°F)169 mm (6.6 inches)80%very high
May Weather19°C (66°F)171 mm (6.7 inches)83%very high
June Weather24°C (75°F)94 mm (3.7 inches)83%extreme
July Weather26°C (79°F)102 mm (4.0 inches)76%extreme
August Weather24°C (75°F)103 mm (4.1 inches)69%very high
September Weather22°C (71°F)61 mm (2.4 inches)68%very high
October Weather15°C (59°F)120 mm (4.7 inches)72%high
November Weather7°C (45°F)76 mm (3.0 inches)83%moderate
December Weather4°C (40°F)73 mm (2.9 inches)86%moderate

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