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December Weather in Troy, United States

Last updated: June 24, 2025

In December, the average temperature in Troy, United States hovers around 9°C (48°F). Visitors can expect a range between a chilly -6°C (22°F) and a pleasant 24°C (76°F). With 115 mm (4.5 in) of precipitation spread over 9 days, it's wise to pack an umbrella! The atmosphere is notably humid, with an average humidity of 87%, creating a lush and vibrant environment.

December Temperature in Troy

In December in Troy, the average temperature is 9°C (48°F). Maximum temperatures can reach 24°C (76°F), while minimums can drop as low as -6°C (22°F). Be prepared for a wide range of temperatures when traveling 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 9°C (48°F), with highs reaching up to 24°C (76°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec455054637177817975665248
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 115 mm (4.5 in) over the course of 9 days, indicating a relatively wet period for the region.

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 115 mm (4.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec981157899112931001171497785115
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 87%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and requiring extra layers and careful planning for any activities.

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 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%82%83%82%80%74%75%79%87%87%
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 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 Troy, you can check the information here.

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 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810101111109853
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 Weather7°C (45°F)98 mm (3.8 inches)86%moderate
February Weather10°C (50°F)115 mm (4.5 inches)85%high
March Weather12°C (55°F)78 mm (3.1 inches)84%very high
April Weather17°C (63°F)98 mm (3.9 inches)82%very high
May Weather22°C (71°F)112 mm (4.4 inches)83%very high
June Weather25°C (77°F)93 mm (3.7 inches)82%extreme
July Weather27°C (81°F)100 mm (3.9 inches)80%extreme
August Weather26°C (79°F)117 mm (4.6 inches)74%very high
September Weather24°C (75°F)149 mm (5.9 inches)75%very high
October Weather19°C (66°F)77 mm (3.0 inches)79%very high
November Weather11°C (52°F)84 mm (3.3 inches)87%moderate
December Weather9°C (48°F)115 mm (4.5 inches)87%moderate

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