January Weather in Mount Pleasant, United States

Last updated: June 24, 2025

In January, the average temperature in Mount Pleasant, United States hovers around 5°C (42°F), with a minimum plunge to -15°C (6°F) and a maximum reaching up to 23°C (74°F). During this month, expect about 110 mm (4.3 in) of precipitation spread over 9 days, contributing to an average humidity of 87%. Stay prepared for a mix of chilly and mild weather!

January Temperature in Mount Pleasant

In January in Mount Pleasant, the average temperature is 5°C (42°F). Maximum temperatures can reach 23°C (74°F), while minimum temperatures can drop as low as -15°C (6°F). This wide range makes it essential to pack appropriately for varying weather conditions when traveling during this time.

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 5°C (42°F), with highs reaching up to 23°C (74°F) and lows dropping to around -15°C (6°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 precipitation amount is 110 mm (4.3 in) over the course of 9 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 110 mm (4.3 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 Mount Pleasant

In Mount Pleasant in January humidity is 87%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and travel less inviting as the air becomes heavy and oppressive.

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 87%, 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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Mount Pleasant for better planning.

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 4, 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	5°C (42°F)	110 mm (4.3 inches)	87%	moderate
February Weather	8°C (46°F)	175 mm (6.9 inches)	87%	high
March Weather	12°C (54°F)	172 mm (6.8 inches)	85%	high
April Weather	15°C (60°F)	163 mm (6.4 inches)	82%	very high
May Weather	21°C (70°F)	113 mm (4.5 inches)	83%	very high
June Weather	25°C (77°F)	128 mm (5.0 inches)	82%	extreme
July Weather	26°C (80°F)	120 mm (4.7 inches)	78%	extreme
August Weather	25°C (78°F)	128 mm (5.0 inches)	67%	very high
September Weather	23°C (74°F)	118 mm (4.7 inches)	64%	very high
October Weather	17°C (64°F)	117 mm (4.6 inches)	74%	high
November Weather	9°C (49°F)	74 mm (2.9 inches)	87%	moderate
December Weather	8°C (46°F)	147 mm (5.8 inches)	88%	moderate