January Weather in Harlan, United States

Last updated: June 24, 2025

In January, the average temperature in Harlan, United States hovers around -5°C (23°F). Expect temperatures to dip as low as -28°C (-19°F), while occasionally peaking at a mild 12°C (55°F). During this month, the region experiences 29 mm (1.1 in) of precipitation spread over 5 days, contributing to an average humidity level of 76%. Stay warm and prepared for the chill!

January Temperature in Harlan

In January in Harlan, the average temperature is -5°C (23°F), with maximums reaching 12°C (55°F) and minimums dropping as low as -28°C (-19°F). Travelers should be prepared for a wide range of temperatures and dress accordingly for the cold.

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

The chart illustrates January temperature patterns in Harlan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harlan, January typically has an average temperature of -5°C (23°F), with highs reaching up to 12°C (55°F) and lows dropping to around -28°C (-19°F).

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

January Precipitation in Harlan

In Harlan in January, the total precipitation amount is 29 mm (1.1 in) recorded over a span of 5 days.

January Precipitation Trends in Harlan

The chart displays monthly precipitation patterns in Harlan, 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 Harlan, January typically receives around 29 mm (1.1 inches) of precipitation spread over approximately 5 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Harlan

In Harlan in January humidity is 76%. With an average temperature of -5°C (23°F), this humidity feels like an uncomfortable chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay warm while still feeling damp and clammy.

January Average Humidity in Harlan

This chart illustrates the average monthly humidity levels in Harlan, 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 Harlan is approximately 76%, 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 Harlan

In Harlan 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 Harlan, you can check the information here.

Maximum UV Index Levels in Harlan for January

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

Data source: Harlan 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 Harlan Compares to Other Months

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

This table compares monthly weather conditions in Harlan, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	29 mm (1.1 inches)	76%	moderate
February Weather	-5°C (24°F)	38 mm (1.5 inches)	80%	moderate
March Weather	4°C (39°F)	82 mm (3.2 inches)	73%	high
April Weather	9°C (49°F)	58 mm (2.3 inches)	74%	very high
May Weather	16°C (61°F)	167 mm (6.6 inches)	78%	very high
June Weather	23°C (74°F)	110 mm (4.3 inches)	82%	extreme
July Weather	25°C (76°F)	70 mm (2.8 inches)	83%	very high
August Weather	23°C (73°F)	117 mm (4.6 inches)	80%	very high
September Weather	20°C (68°F)	97 mm (3.8 inches)	75%	very high
October Weather	11°C (51°F)	124 mm (4.9 inches)	75%	high
November Weather	3°C (38°F)	35 mm (1.4 inches)	82%	moderate
December Weather	-1°C (30°F)	37 mm (1.5 inches)	83%	moderate