December Weather in Garrison, United States

Last updated: June 24, 2025

In December, the average temperature in Garrison, United States hovers around 12°C (54°F). While you might experience a brisk minimum of -3°C (26°F), the days can warm up to a pleasant 28°C (82°F). Expect about 125 mm (4.9 in) of precipitation over 8 days, accompanied by an average humidity of 88%, adding to the region's lush atmosphere.

December Temperature in Garrison

In December in Garrison, the average temperature is 12°C (54°F). The maximum can reach 28°C (82°F), while the minimum can be as low as -3°C (26°F). It’s advisable to pack layers to accommodate the varying temperatures during your travels.

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

The chart illustrates December temperature patterns in Garrison, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Garrison, December typically has an average temperature of 12°C (54°F), with highs reaching up to 28°C (82°F) and lows dropping to around -3°C (26°F).

Data source: Temperature data for Garrison generated using information from the Copernicus Climate Change Service.

December Precipitation in Garrison

In Garrison in December, the precipitation amount is 125 mm (4.9 in) over the course of 8 days.

December Precipitation Trends in Garrison

The chart displays monthly precipitation patterns in Garrison, 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 Garrison, December typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Garrison

In Garrison in December, humidity is 88%. With an average temperature of 12°C (54°F), this humidity feels like a thick, damp blanket, making traveling a bit uncomfortable as the air clings to your skin, causing you to sweat even in cooler weather.

December Average Humidity in Garrison

This chart illustrates the average monthly humidity levels in Garrison, 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 Garrison is approximately 88%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Garrison

In Garrison 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 Garrison for better planning.

Maximum UV Index Levels in Garrison for December

The chart shows the monthly maximum UV Index (UVI) for Garrison 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 Garrison typically reaches 4, which falls under the moderate exposure category.

Data source: Garrison 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 Garrison Compares to Other Months

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

This table compares monthly weather conditions in Garrison, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	102 mm (4.0 inches)	81%	moderate
February Weather	11°C (53°F)	149 mm (5.9 inches)	81%	high
March Weather	17°C (62°F)	129 mm (5.1 inches)	79%	very high
April Weather	19°C (66°F)	157 mm (6.2 inches)	80%	very high
May Weather	24°C (75°F)	145 mm (5.7 inches)	81%	extreme
June Weather	27°C (81°F)	130 mm (5.1 inches)	76%	extreme
July Weather	28°C (83°F)	90 mm (3.5 inches)	73%	extreme
August Weather	29°C (84°F)	116 mm (4.6 inches)	71%	extreme
September Weather	26°C (79°F)	117 mm (4.6 inches)	72%	very high
October Weather	20°C (69°F)	109 mm (4.3 inches)	73%	very high
November Weather	14°C (58°F)	79 mm (3.1 inches)	83%	high
December Weather	12°C (54°F)	125 mm (4.9 inches)	88%	moderate