January Weather in Mount Pleasant, United States

Last updated: June 24, 2025

In January, the average temperature in Mount Pleasant, United States hovers around -4°C (25°F), with extremes ranging from a frigid -30°C (-22°F) to a mild 14°C (57°F). During this time, expect approximately 54 mm (2.1 in) of precipitation over 6 days, contributing to a relatively high average humidity of 81%. Prepare accordingly for the chill and moisture!

January Temperature in Mount Pleasant

In January in Mount Pleasant, the average temperature is -4°C (25°F). Maximums can reach 14°C (57°F) while minimums can drop to as low as -30°C (-22°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable during their visit.

January Weather in Mount Pleasant: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Mount Pleasant, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mount Pleasant, January typically has an average temperature of -4°C (25°F), with highs reaching up to 14°C (57°F) and lows dropping to around -30°C (-22°F).

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

January Precipitation in Mount Pleasant

In Mount Pleasant in January, the total precipitation amount is 54 mm (2.1 in) over the course of 6 days.

January Precipitation Trends in Mount Pleasant

The chart displays monthly precipitation patterns in Mount Pleasant, 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 Mount Pleasant, January typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 6 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 Mount Pleasant

In Mount Pleasant in January humidity is 81%. With an average temperature of -4°C (25°F), this humidity feels like an icy blanket wrapping around you, making travel quite uncomfortable as each breath draws in a damp chill, often leaving you shivering and increasingly wary of the frosty air.

January Average Humidity in Mount Pleasant

This chart illustrates the average monthly humidity levels in Mount Pleasant, 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 Mount Pleasant is approximately 81%, 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 Mount Pleasant

In Mount Pleasant 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 Mount Pleasant, you can check the information here.

Maximum UV Index Levels in Mount Pleasant for January

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

Data source: Mount Pleasant 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 Mount Pleasant Compares to Other Months

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

This table compares monthly weather conditions in Mount Pleasant, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	54 mm (2.1 inches)	81%	moderate
February Weather	-3°C (27°F)	59 mm (2.3 inches)	81%	moderate
March Weather	5°C (42°F)	92 mm (3.6 inches)	81%	high
April Weather	10°C (51°F)	87 mm (3.4 inches)	82%	very high
May Weather	18°C (64°F)	164 mm (6.5 inches)	78%	very high
June Weather	24°C (75°F)	145 mm (5.7 inches)	81%	extreme
July Weather	25°C (78°F)	72 mm (2.8 inches)	79%	very high
August Weather	24°C (75°F)	72 mm (2.8 inches)	77%	very high
September Weather	21°C (70°F)	110 mm (4.3 inches)	78%	very high
October Weather	13°C (55°F)	132 mm (5.2 inches)	78%	high
November Weather	4°C (40°F)	51 mm (2.0 inches)	87%	moderate
December Weather	1°C (33°F)	46 mm (1.8 inches)	84%	moderate