January Weather in Mercer, United States

Last updated: June 24, 2025

In January, the average temperature in Mercer, United States hovers around -10°C (14°F), making it a notably chilly period. Expect temperatures to dip as low as -31°C (-23°F), while the mercury can rise to a maximum of 6°C (43°F). Throughout the month, there's an average precipitation of 36 mm (1.4 in), spread across about 9 days, which contributes to a high average humidity of 93%. Be sure to gear up for the cold and possibly damp conditions!

January Temperature in Mercer

In January in Mercer, the average temperature is -10°C (14°F). Maximum temperatures can reach 6°C (43°F), while minimums can plummet to as low as -31°C (-23°F). Warm clothing and careful planning are essential for a comfortable visit during this chilly period.

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

The chart illustrates January temperature patterns in Mercer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mercer, January typically has an average temperature of -10°C (14°F), with highs reaching up to 6°C (43°F) and lows dropping to around -31°C (-23°F).

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

January Precipitation in Mercer

In Mercer in January, the precipitation amount is 36 mm (1.4 in) over the course of 9 days.

January Precipitation Trends in Mercer

The chart displays monthly precipitation patterns in Mercer, 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 Mercer, January typically receives around 36 mm (1.4 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 Mercer

In Mercer in January, humidity is 93%. With an average temperature of -10°C (14°F), this humidity feels like an invisible weight on your skin, making every breath feel thick and heavy, while the cold air bites sharply, creating a contrasting and uncomfortable chill that can make traveling outdoors feel like a daunting challenge.

January Average Humidity in Mercer

This chart illustrates the average monthly humidity levels in Mercer, 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 Mercer is approximately 93%, 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 Mercer

In Mercer in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Mercer, you can visit Hourly UV Index in Mercer.

Maximum UV Index Levels in Mercer for January

The chart shows the monthly maximum UV Index (UVI) for Mercer 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 Mercer typically reaches 2, which falls under the low exposure category.

Data source: Mercer 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 Mercer Compares to Other Months

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

This table compares monthly weather conditions in Mercer, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-10°C (14°F)	36 mm (1.4 inches)	93%	low
February Weather	-10°C (14°F)	51 mm (2.0 inches)	93%	moderate
March Weather	-3°C (27°F)	53 mm (2.1 inches)	89%	moderate
April Weather	3°C (37°F)	92 mm (3.6 inches)	85%	high
May Weather	12°C (54°F)	100 mm (3.9 inches)	76%	very high
June Weather	18°C (65°F)	121 mm (4.8 inches)	71%	very high
July Weather	20°C (69°F)	110 mm (4.3 inches)	70%	very high
August Weather	18°C (65°F)	126 mm (5.0 inches)	71%	very high
September Weather	14°C (58°F)	98 mm (3.9 inches)	73%	high
October Weather	7°C (44°F)	118 mm (4.7 inches)	81%	moderate
November Weather	-2°C (29°F)	58 mm (2.3 inches)	87%	moderate
December Weather	-7°C (20°F)	70 mm (2.8 inches)	91%	low