January Weather in Challis, United States

Last updated: June 24, 2025

In January, the average temperature in Challis, United States hovers around -9°C (16°F), with extremes reaching as low as -33°C (-27°F) and peaking at 5°C (41°F). Expect 34 mm (1.3 in) of precipitation spread over 9 days, all while enduring a high average humidity of 94%. Stay warm and prepared for the chill!

January Temperature in Challis

In January in Challis the average temperature is -9°C (16°F), with maximums reaching 5°C (41°F) and minimums dipping as low as -33°C (-27°F). Travelers should prepare for extremely cold conditions and dress accordingly to fully enjoy their visit.

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

The chart illustrates January temperature patterns in Challis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Challis, January typically has an average temperature of -9°C (16°F), with highs reaching up to 5°C (41°F) and lows dropping to around -33°C (-27°F).

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

January Precipitation in Challis

In Challis in January, the precipitation amount is 34 mm (1.3 in) over the course of 9 days.

January Precipitation Trends in Challis

The chart displays monthly precipitation patterns in Challis, 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 Challis, January typically receives around 34 mm (1.3 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 Challis

In Challis in January humidity is 94%. With an average temperature of -9°C (16°F), this humidity feels like an icy blanket enveloping you, making every breath a struggle and the air seemingly heavy. Traveling under these conditions can be challenging, as the cold dampness seeps into your clothes, chilling you to the bone and complicating outdoor activities.

January Average Humidity in Challis

This chart illustrates the average monthly humidity levels in Challis, 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 Challis is approximately 94%, 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 Challis

In Challis 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 Challis, you can check the information here.

Maximum UV Index Levels in Challis for January

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

Data source: Challis 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 Challis Compares to Other Months

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

This table compares monthly weather conditions in Challis, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (16°F)	34 mm (1.3 inches)	94%	moderate
February Weather	-8°C (18°F)	65 mm (2.6 inches)	93%	moderate
March Weather	-3°C (27°F)	40 mm (1.6 inches)	91%	very high
April Weather	0°C (33°F)	49 mm (1.9 inches)	87%	very high
May Weather	6°C (44°F)	68 mm (2.7 inches)	83%	extreme
June Weather	13°C (55°F)	59 mm (2.3 inches)	80%	extreme
July Weather	18°C (65°F)	18 mm (0.7 inches)	75%	extreme
August Weather	17°C (63°F)	23 mm (0.9 inches)	66%	very high
September Weather	12°C (54°F)	30 mm (1.2 inches)	66%	very high
October Weather	3°C (37°F)	42 mm (1.7 inches)	77%	high
November Weather	-3°C (27°F)	34 mm (1.3 inches)	91%	moderate
December Weather	-9°C (16°F)	38 mm (1.5 inches)	96%	low