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December Weather in Tully, United States

Last updated: June 24, 2025

In December, the average temperature in Tully, United States hovers around -2°C (29°F). While the mercury can dip as low as -20°C (-4°F), it can also rise to a pleasant 16°C (61°F). Expect 108 mm (4.3 in) of precipitation spread over 17 days, with an average humidity level of 86%. Prepare accordingly for a chilly and wet month!

December Temperature in Tully

In December in Tully, the average temperature is -2°C (29°F), with maximums reaching up to 16°C (61°F) and minimums plummeting to -20°C (-4°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both chilly and mild conditions.

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

The chart illustrates December temperature patterns in Tully, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tully, December typically has an average temperature of -2°C (29°F), with highs reaching up to 16°C (61°F) and lows dropping to around -20°C (-4°F).
JanFebMarAprMayJunJulAugSepOctNovDec242633445765706862523729
Data source: Temperature data for Tully 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 Tully

In Tully in December, the total precipitation amount is 108 mm (4.3 in) over the course of 17 days.

December Precipitation Trends in Tully

The chart displays monthly precipitation patterns in Tully, 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 Tully, December typically receives around 108 mm (4.3 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec9710296128137114181136102165111108
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Tully

In Tully in December humidity is 86%. With an average temperature of -2°C (29°F), this humidity feels like a damp chill that seeps through layers of clothing, making outdoor activities uncomfortable and travel plans challenging.

December Average Humidity in Tully

This chart illustrates the average monthly humidity levels in Tully, 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 Tully is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Tully

In Tully 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 Tully, you can visit Hourly UV Index in Tully.

Maximum UV Index Levels in Tully for December

The chart shows the monthly maximum UV Index (UVI) for Tully 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 Tully typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34681010998642
Data source: Tully 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 Tully Compares to Other Months

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

This table compares monthly weather conditions in Tully, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)97 mm (3.8 inches)90%moderate
February Weather-3°C (27°F)102 mm (4.0 inches)90%moderate
March Weather0°C (33°F)96 mm (3.8 inches)87%high
April Weather7°C (45°F)127 mm (5.0 inches)88%very high
May Weather14°C (57°F)137 mm (5.4 inches)82%very high
June Weather18°C (66°F)114 mm (4.5 inches)79%very high
July Weather21°C (71°F)181 mm (7.1 inches)78%very high
August Weather20°C (69°F)136 mm (5.4 inches)76%very high
September Weather17°C (62°F)102 mm (4.0 inches)78%very high
October Weather11°C (52°F)165 mm (6.5 inches)84%high
November Weather3°C (37°F)111 mm (4.4 inches)89%moderate
December Weather-2°C (29°F)108 mm (4.3 inches)86%low

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