January Weather in Hailey, United States

Last updated: June 24, 2025

The average temperature in Hailey, United States during January hovers around -7°C (20°F), with a potential minimum plunging to -25°C (-13°F) and a maximum reaching up to 5°C (42°F). Expect 58 mm (2.3 in) of precipitation spread across about 9 days, all while the air remains notably damp with an average humidity of 91%.

January Temperature in Hailey

In January in Hailey, the average temperature is -7°C (20°F). The maximum can reach 5°C (42°F) and the minimum can be as low as -25°C (-13°F). Travelers should be prepared for cold weather and dress in layers to stay warm.

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

The chart illustrates January temperature patterns in Hailey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hailey, January typically has an average temperature of -7°C (20°F), with highs reaching up to 5°C (42°F) and lows dropping to around -25°C (-13°F).

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

January Precipitation in Hailey

In Hailey in January, the precipitation amount is 58 mm (2.3 in) spread over 9 days.

January Precipitation Trends in Hailey

The chart displays monthly precipitation patterns in Hailey, 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 Hailey, January typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 9 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 Hailey

In Hailey in January humidity is 91%. With an average temperature of -7°C (20°F), this humidity feels like an icy embrace that clings to your skin, making travel uncomfortable and challenging as every breath feels damp and heavy in the frigid air.

January Average Humidity in Hailey

This chart illustrates the average monthly humidity levels in Hailey, 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 Hailey is approximately 91%, 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 Hailey

In Hailey in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Hailey, you can check the information here.

Maximum UV Index Levels in Hailey for January

The chart shows the monthly maximum UV Index (UVI) for Hailey 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 Hailey typically reaches 3, which falls under the moderate exposure category.

Data source: Hailey 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 Hailey Compares to Other Months

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

This table compares monthly weather conditions in Hailey, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	58 mm (2.3 inches)	91%	moderate
February Weather	-6°C (22°F)	80 mm (3.1 inches)	92%	moderate
March Weather	-1°C (30°F)	49 mm (1.9 inches)	85%	very high
April Weather	3°C (38°F)	43 mm (1.7 inches)	76%	very high
May Weather	8°C (47°F)	52 mm (2.0 inches)	66%	extreme
June Weather	15°C (58°F)	25 mm (1.0 inches)	62%	extreme
July Weather	20°C (68°F)	5 mm (0.2 inches)	53%	extreme
August Weather	19°C (66°F)	17 mm (0.7 inches)	42%	very high
September Weather	13°C (56°F)	21 mm (0.8 inches)	46%	very high
October Weather	5°C (41°F)	34 mm (1.3 inches)	64%	high
November Weather	-1°C (30°F)	43 mm (1.7 inches)	83%	moderate
December Weather	-7°C (20°F)	45 mm (1.8 inches)	87%	moderate