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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 (24°F), making it a chilly time of year. Expect minimums plunging to -27°C (-17°F) and maximums reaching up to 14°C (58°F). With 55 mm (2.2 in) of precipitation spread over 8 days, be prepared for occasional showers. The air is quite humid, featuring an average humidity of 88%, adding to the crisp winter atmosphere.

January Temperature in Mount Pleasant

In January in Mount Pleasant, the average temperature is -4°C (24°F). Maximum temperatures can reach 14°C (58°F), while the minimum can dip as low as -27°C (-17°F). Be sure to pack warm clothing and prepare for significant temperature fluctuations during your travels.

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 (24°F), with highs reaching up to 14°C (58°F) and lows dropping to around -27°C (-17°F).
JanFebMarAprMayJunJulAugSepOctNovDec242535455868747164523730
Data source: Temperature data for Mount Pleasant generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Mount Pleasant

In Mount Pleasant in January, the precipitation amount is 55 mm (2.2 in) over the course of 8 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 55 mm (2.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec5558588911611265801041225665
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Mount Pleasant

In Mount Pleasant in January, humidity is 88%. With an average temperature of -4°C (24°F), this humidity feels like an icy blanket enveloping you, making every breath feel crisp and biting, which can be quite challenging for traveling.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
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 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 Mount Pleasant, you can visit Hourly UV Index in Mount Pleasant.

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 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
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.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (24°F)55 mm (2.2 inches)88%low
February Weather-4°C (25°F)58 mm (2.3 inches)87%moderate
March Weather2°C (35°F)58 mm (2.3 inches)85%moderate
April Weather7°C (45°F)89 mm (3.5 inches)86%very high
May Weather15°C (58°F)116 mm (4.6 inches)80%very high
June Weather20°C (69°F)112 mm (4.4 inches)80%very high
July Weather23°C (74°F)65 mm (2.5 inches)80%very high
August Weather22°C (71°F)80 mm (3.1 inches)80%very high
September Weather18°C (64°F)104 mm (4.1 inches)80%high
October Weather11°C (52°F)122 mm (4.8 inches)84%moderate
November Weather3°C (38°F)56 mm (2.2 inches)89%moderate
December Weather-1°C (31°F)65 mm (2.6 inches)86%low

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