January Weather in Garrison, United States

Last updated: June 24, 2025

In January, the average temperature in Garrison, United States hovers around -11°C (12°F). Expect chilly conditions, with minimums plunging to -35°C (-30°F) and occasional peaks at 7°C (45°F). Amidst the cold, precipitation totals about 13 mm (0.5 in) over 4 days, accompanied by a high average humidity of 84%, making it a notably crisp month.

January Temperature in Garrison

In January in Garrison, the average temperature is -11°C (12°F), with maximums reaching 7°C (45°F) and minimums dropping to as low as -35°C (-30°F). Travelers should be prepared for extremely cold conditions and dress warmly to enjoy their visit.

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

The chart illustrates January 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, January typically has an average temperature of -11°C (12°F), with highs reaching up to 7°C (45°F) and lows dropping to around -35°C (-30°F).

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

January Precipitation in Garrison

In Garrison in January, the precipitation amount is 13 mm (0.5 in) over a span of 4 days.

January Precipitation Trends in Garrison

The chart displays monthly precipitation patterns in Garrison, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Garrison, January typically receives around 13 mm (0.5 inches) of precipitation spread over approximately 4 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Garrison

In Garrison in January, humidity is 84%. With an average temperature of -11°C (12°F), this humidity feels like a heavy, frosty blanket that clings to your skin, making every breath feel chilled and every step a bit more laborious, which can be quite challenging for travelers.

January Average Humidity in Garrison

This chart illustrates the average monthly humidity levels in Garrison, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Garrison is approximately 84%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Garrison

In Garrison in January, 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 Garrison, you can visit Hourly UV Index in Garrison.

Maximum UV Index Levels in Garrison for January

The chart shows the monthly maximum UV Index (UVI) for Garrison in January, 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 January, the maximum UV index in Garrison typically reaches 2, which falls under the low exposure category.

Data source: Garrison January 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 January 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 January’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 January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-11°C (12°F)	13 mm (0.5 inches)	84%	low
February Weather	-12°C (10°F)	16 mm (0.6 inches)	88%	moderate
March Weather	-3°C (28°F)	26 mm (1.0 inches)	78%	moderate
April Weather	3°C (38°F)	26 mm (1.0 inches)	75%	very high
May Weather	12°C (54°F)	39 mm (1.5 inches)	76%	very high
June Weather	19°C (67°F)	66 mm (2.6 inches)	79%	very high
July Weather	22°C (72°F)	63 mm (2.5 inches)	78%	very high
August Weather	20°C (68°F)	57 mm (2.2 inches)	78%	very high
September Weather	15°C (59°F)	68 mm (2.7 inches)	69%	high
October Weather	6°C (43°F)	40 mm (1.6 inches)	71%	moderate
November Weather	-2°C (29°F)	21 mm (0.8 inches)	82%	moderate
December Weather	-7°C (20°F)	21 mm (0.8 inches)	84%	low