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December Weather in Unity, United States

Last updated: June 24, 2025

In December, the average temperature in Unity, United States hovers around -2°C (28°F). Be prepared for extremes, as temperatures can dip as low as -25°C (-12°F) and rise to a maximum of 15°C (59°F). Visitors can expect around 107 mm (4.2 in) of precipitation over 9 days, with an average humidity of 81%. Dress accordingly and enjoy the unique climate!

December Temperature in Unity

In December in Unity, the average temperature is -2°C (28°F). The maximum can reach 15°C (59°F), while the minimum can be as low as -25°C (-12°F). Be prepared for a chilly adventure, and pack accordingly to enjoy all that Unity has to offer during this time.

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

The chart illustrates December temperature patterns in Unity, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Unity, December typically has an average temperature of -2°C (28°F), with highs reaching up to 15°C (59°F) and lows dropping to around -25°C (-12°F).
JanFebMarAprMayJunJulAugSepOctNovDec232632445666727063513728
Data source: Temperature data for Unity generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Unity

In Unity in December, the precipitation amount is 107 mm (4.2 in), occurring over a span of 9 days.

December Precipitation Trends in Unity

The chart displays monthly precipitation patterns in Unity, 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 Unity, December typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec70837212079801118470133101107
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Unity

In Unity in December, humidity is 81%. With an average temperature of -2°C (28°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and necessitating extra layers to stay warm and dry.

December Average Humidity in Unity

This chart illustrates the average monthly humidity levels in Unity, 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 Unity 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 Unity

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

Maximum UV Index Levels in Unity for December

The chart shows the monthly maximum UV Index (UVI) for Unity 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 Unity typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997632
Data source: Unity 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 Unity Compares to Other Months

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

This table compares monthly weather conditions in Unity, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)70 mm (2.8 inches)86%moderate
February Weather-3°C (26°F)83 mm (3.3 inches)84%moderate
March Weather0°C (33°F)72 mm (2.8 inches)82%high
April Weather7°C (45°F)120 mm (4.7 inches)80%very high
May Weather14°C (57°F)79 mm (3.1 inches)72%very high
June Weather19°C (67°F)80 mm (3.1 inches)72%very high
July Weather22°C (72°F)111 mm (4.4 inches)67%very high
August Weather21°C (70°F)84 mm (3.3 inches)66%very high
September Weather17°C (63°F)70 mm (2.8 inches)71%high
October Weather11°C (51°F)133 mm (5.2 inches)78%high
November Weather3°C (37°F)100 mm (4.0 inches)84%moderate
December Weather-2°C (28°F)107 mm (4.2 inches)81%low

Compare Unity's Climate with Cities Worldwide