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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 -1°C (30°F), but be prepared for a range that can dip to a brisk -23°C (-10°F) or rise to a balmy 16°C (62°F). Expect 117 mm (4.6 in) of precipitation spread over 9 days, with an average humidity of 81%.

December Temperature in Troy

In December in Troy, the average temperature is -1°C (30°F). The maximum can reach 16°C (62°F) and the minimum can be as low as -23°C (-10°F). Travelers should be prepared for fluctuations in temperature and dress in layers to stay comfortable during their visit.

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 -1°C (30°F), with highs reaching up to 16°C (62°F) and lows dropping to around -23°C (-10°F).
JanFebMarAprMayJunJulAugSepOctNovDec262834465768737164523930
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 total precipitation amount is 117 mm (4.6 in) spread over a period of 9 days.

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 117 mm (4.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec74867912484751238483133100117
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 81%. With an average temperature of -1°C (30°F), this humidity feels like an extra layer of chill settles in, making travel uncomfortable and the cold air cling to your skin, dampening the experience with every breath.

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 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
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 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Troy, you can visit Hourly UV Index in Troy.

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 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997632
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 Weather-3°C (26°F)74 mm (2.9 inches)86%moderate
February Weather-2°C (29°F)86 mm (3.4 inches)84%moderate
March Weather1°C (34°F)79 mm (3.1 inches)82%high
April Weather8°C (46°F)124 mm (4.9 inches)80%very high
May Weather14°C (58°F)84 mm (3.3 inches)72%very high
June Weather20°C (68°F)75 mm (3.0 inches)72%very high
July Weather23°C (73°F)123 mm (4.9 inches)67%very high
August Weather22°C (71°F)83 mm (3.3 inches)66%very high
September Weather18°C (64°F)83 mm (3.3 inches)71%high
October Weather11°C (53°F)133 mm (5.3 inches)78%high
November Weather4°C (39°F)100 mm (3.9 inches)84%moderate
December Weather-1°C (30°F)117 mm (4.6 inches)81%low

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