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December Weather in Troy, United States

Last updated: June 24, 2025

In Troy, United States, the average temperature in December hovers around 12°C (53°F), with temperatures ranging from a brisk -6°C (22°F) to a warm 27°C (81°F). Expect 129 mm (5.1 in) of precipitation over 11 days, contributing to the area's average humidity of a comfortable 86%. Get ready for a mix of chilly and mild days!

December Temperature in Troy

In December in Troy, the average temperature is 12°C (53°F). Maximum temperatures can reach 27°C (81°F), while minimums can drop as low as -6°C (22°F). Travelers should be prepared for a wide range of temperatures when visiting during this time.

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

The chart illustrates December temperature patterns in Troy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Troy, December typically has an average temperature of 12°C (53°F), with highs reaching up to 27°C (81°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec505661667479818178705753
Data source: Temperature data for Troy 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 Troy

In Troy in December, the precipitation amount is 129 mm (5.1 in) spread over 11 days, indicating a wet period for the area.

December Precipitation Trends in Troy

The chart displays monthly precipitation patterns in Troy, 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 Troy, December typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec1061168912812612410512511111363129
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Troy

In Troy in December humidity is 86%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and prompting the need for warm, layered clothing while exploring the surroundings.

December Average Humidity in Troy

This chart illustrates the average monthly humidity levels in Troy, 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 Troy is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%79%77%74%70%78%78%79%74%83%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Troy

In Troy 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 Troy for better planning.

Maximum UV Index Levels in Troy for December

The chart shows the monthly maximum UV Index (UVI) for Troy 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 Troy typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589101111121110864
Data source: Troy 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 Troy Compares to Other Months

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

This table compares monthly weather conditions in Troy, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)106 mm (4.2 inches)83%moderate
February Weather14°C (57°F)116 mm (4.6 inches)82%very high
March Weather16°C (61°F)89 mm (3.5 inches)79%very high
April Weather19°C (66°F)128 mm (5.0 inches)77%very high
May Weather23°C (74°F)126 mm (5.0 inches)74%extreme
June Weather26°C (79°F)124 mm (4.9 inches)70%extreme
July Weather27°C (81°F)105 mm (4.1 inches)78%extreme
August Weather27°C (81°F)125 mm (4.9 inches)78%extreme
September Weather25°C (78°F)111 mm (4.4 inches)79%very high
October Weather21°C (70°F)113 mm (4.5 inches)74%very high
November Weather14°C (57°F)63 mm (2.5 inches)83%high
December Weather12°C (53°F)129 mm (5.1 inches)86%moderate

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