January Weather in Hartley, United States

Last updated: June 24, 2025

In January, the average temperature in Hartley, United States hovers around -7°C (20°F). Expect minimum chills of -31°C (-24°F) and occasional warmth peaking at 10°C (50°F). Precipitation is modest, with about 28 mm (1.1 in) spread over 5 days, while humidity remains high at 80%. Stay warm and prepared for a refreshing winter experience!

January Temperature in Hartley

In January in Hartley, the average temperature is -7°C (20°F). Maximums can reach 10°C (50°F), while minimums can drop as low as -31°C (-24°F). Travelers should be prepared for significant temperature fluctuations and dress warmly if visiting during this month.

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

The chart illustrates January temperature patterns in Hartley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartley, January typically has an average temperature of -7°C (20°F), with highs reaching up to 10°C (50°F) and lows dropping to around -31°C (-24°F).

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

January Precipitation in Hartley

In Hartley in January, the precipitation amount is 28 mm (1.1 in) over a period of 5 days.

January Precipitation Trends in Hartley

The chart displays monthly precipitation patterns in Hartley, 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 Hartley, January typically receives around 28 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.

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Millimeters (mm) Inches (in)

January Humidity in Hartley

In Hartley in January, humidity is 80%. With an average temperature of -7°C (20°F), this humidity feels like an icy fog enveloping you, making outdoor travel uncomfortable as your breath freezes in the air and every step forward seems to draw out more chill than the last.

January Average Humidity in Hartley

This chart illustrates the average monthly humidity levels in Hartley, 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 Hartley is approximately 80%, 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 Hartley

In Hartley 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 Hartley, you can check the information here.

Maximum UV Index Levels in Hartley for January

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

Data source: Hartley 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 Hartley Compares to Other Months

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

This table compares monthly weather conditions in Hartley, 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)	28 mm (1.1 inches)	80%	moderate
February Weather	-7°C (19°F)	34 mm (1.3 inches)	84%	moderate
March Weather	2°C (35°F)	69 mm (2.7 inches)	75%	moderate
April Weather	7°C (45°F)	101 mm (4.0 inches)	79%	very high
May Weather	15°C (59°F)	136 mm (5.3 inches)	74%	very high
June Weather	22°C (72°F)	126 mm (5.0 inches)	81%	extreme
July Weather	24°C (75°F)	73 mm (2.9 inches)	82%	very high
August Weather	22°C (71°F)	104 mm (4.1 inches)	80%	very high
September Weather	19°C (66°F)	109 mm (4.3 inches)	75%	very high
October Weather	9°C (49°F)	88 mm (3.5 inches)	77%	moderate
November Weather	2°C (35°F)	31 mm (1.2 inches)	85%	moderate
December Weather	-3°C (27°F)	39 mm (1.5 inches)	83%	moderate