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December Weather in Tracy City, United States

Last updated: June 24, 2025

In December, the average temperature in Tracy City, United States hovers around 7°C (45°F). You'll experience a range of temperatures, with minimums dipping to -10°C (13°F) and highs reaching up to 22°C (71°F). Expect moderate rainfall, totaling 155 mm (6.1 in) over approximately 11 days, and a notably high average humidity of 88%.

December Temperature in Tracy City

In December in Tracy City, the average temperature is 7°C (45°F). The maximum can reach 22°C (71°F) and the minimum can be as low as -10°C (13°F). This diverse range of temperatures makes it essential to pack for both warm and cold conditions while traveling.

December Weather in Tracy City: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Tracy City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tracy City, December typically has an average temperature of 7°C (45°F), with highs reaching up to 22°C (71°F) and lows dropping to around -10°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec404652586873777572624844
Data source: Temperature data for Tracy City 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 Tracy City

In Tracy City in December, the total precipitation amount is 155 mm (6.1 in) distributed over a span of 11 days.

December Precipitation Trends in Tracy City

The chart displays monthly precipitation patterns in Tracy City, 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 Tracy City, December typically receives around 155 mm (6.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec11518820515811013413513111512679155
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Tracy City

In Tracy City in December humidity is 88%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as you navigate through a heavy, thick atmosphere that clings to your skin.

December Average Humidity in Tracy City

This chart illustrates the average monthly humidity levels in Tracy City, 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 Tracy City is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Tracy City

In Tracy City 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 Tracy City for better planning.

Maximum UV Index Levels in Tracy City for December

The chart shows the monthly maximum UV Index (UVI) for Tracy City 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 Tracy City typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
Data source: Tracy City 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 Tracy City Compares to Other Months

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

This table compares monthly weather conditions in Tracy City, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)115 mm (4.5 inches)87%moderate
February Weather8°C (46°F)188 mm (7.4 inches)87%high
March Weather11°C (52°F)205 mm (8.1 inches)85%very high
April Weather14°C (58°F)158 mm (6.2 inches)82%very high
May Weather20°C (68°F)110 mm (4.3 inches)83%extreme
June Weather23°C (74°F)134 mm (5.3 inches)82%extreme
July Weather25°C (77°F)135 mm (5.3 inches)78%extreme
August Weather24°C (76°F)131 mm (5.2 inches)67%very high
September Weather22°C (72°F)115 mm (4.5 inches)64%very high
October Weather17°C (62°F)126 mm (4.9 inches)74%high
November Weather9°C (48°F)79 mm (3.1 inches)87%moderate
December Weather7°C (45°F)155 mm (6.1 inches)88%moderate

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