January Weather in Cool, United States

Last updated: June 24, 2025

In January, the average temperature in Cool, United States hovers around 8°C (47°F). Expect a chill in the air, with minimum temperatures plummeting to -2°C (28°F) and maximums peaking at 22°C (72°F). This month also brings about 227 mm (8.9 in) of precipitation spread over 11 days, contributing to an average humidity level of 84%. Prepare accordingly for a mix of cool, wet days!

January Temperature in Cool

In January in Cool, the average temperature is 8°C (47°F). The maximum can reach 22°C (72°F), while the minimum can be as low as -2°C (28°F). Be prepared for a range of weather conditions, making it ideal for travelers who enjoy both mild and chilly experiences.

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

The chart illustrates January temperature patterns in Cool, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cool, January typically has an average temperature of 8°C (47°F), with highs reaching up to 22°C (72°F) and lows dropping to around -2°C (28°F).

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

January Precipitation in Cool

In Cool in January, the total precipitation amount is 227 mm (8.9 in) over the course of 11 days.

January Precipitation Trends in Cool

The chart displays monthly precipitation patterns in Cool, 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 Cool, January typically receives around 227 mm (8.9 inches) of precipitation spread over approximately 11 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 Cool

In Cool in January, humidity is 84%. With an average temperature of 8°C (47°F), this humidity feels like a damp blanket wrapping around you, making travel feel heavy and a bit lethargic, as the air thickens with moisture and each step becomes a little more cumbersome.

January Average Humidity in Cool

This chart illustrates the average monthly humidity levels in Cool, 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 Cool 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 Cool

In Cool 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 Cool, you can check the information here.

Maximum UV Index Levels in Cool for January

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

Data source: Cool 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 Cool Compares to Other Months

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

This table compares monthly weather conditions in Cool, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	227 mm (8.9 inches)	84%	moderate
February Weather	9°C (49°F)	230 mm (9.1 inches)	84%	moderate
March Weather	11°C (52°F)	237 mm (9.3 inches)	83%	high
April Weather	14°C (58°F)	112 mm (4.4 inches)	81%	very high
May Weather	18°C (65°F)	62 mm (2.4 inches)	74%	very high
June Weather	23°C (74°F)	8 mm (0.3 inches)	64%	extreme
July Weather	27°C (80°F)	0 mm (0.0 inches)	44%	extreme
August Weather	26°C (79°F)	0 mm (0.0 inches)	36%	very high
September Weather	23°C (73°F)	17 mm (0.7 inches)	44%	very high
October Weather	17°C (63°F)	67 mm (2.7 inches)	65%	high
November Weather	11°C (53°F)	131 mm (5.1 inches)	84%	moderate
December Weather	8°C (47°F)	178 mm (7.0 inches)	83%	moderate