January Weather in Fort Mill, United States

Last updated: June 24, 2025

In January, the average temperature in Fort Mill, United States hovers around 7°C (45°F), with the mercury dipping as low as -12°C (11°F) and peaking at a balmy 25°C (78°F). During this month, the area sees 93 mm (3.7 in) of precipitation spread over 9 days, contributing to an average humidity level of a muggy 86%. Prepare for a mix of chilly and mild days!

January Temperature in Fort Mill

In January in Fort Mill, the average temperature is 7°C (45°F). Maximum temperatures can reach 25°C (78°F), while minimums can drop as low as -12°C (11°F). Travelers should be prepared for a wide range of temperatures during their stay.

January Weather in Fort Mill: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Fort Mill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fort Mill, January typically has an average temperature of 7°C (45°F), with highs reaching up to 25°C (78°F) and lows dropping to around -12°C (11°F).

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

January Precipitation in Fort Mill

In Fort Mill in January, the precipitation amount is 93 mm (3.7 in) over the course of 9 days.

January Precipitation Trends in Fort Mill

The chart displays monthly precipitation patterns in Fort Mill, 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 Fort Mill, January typically receives around 93 mm (3.7 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 Fort Mill

In Fort Mill in January, humidity is 86%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a bit uncomfortable and necessitating cozy layers to stay warm while navigating the moist air.

January Average Humidity in Fort Mill

This chart illustrates the average monthly humidity levels in Fort Mill, 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 Fort Mill is approximately 86%, 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 Fort Mill

In Fort Mill 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 Fort Mill for better planning.

Maximum UV Index Levels in Fort Mill for January

The chart shows the monthly maximum UV Index (UVI) for Fort Mill 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 Fort Mill typically reaches 4, which falls under the moderate exposure category.

Data source: Fort Mill 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 Fort Mill Compares to Other Months

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

This table compares monthly weather conditions in Fort Mill, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	93 mm (3.7 inches)	86%	moderate
February Weather	10°C (50°F)	120 mm (4.7 inches)	85%	high
March Weather	12°C (55°F)	89 mm (3.5 inches)	84%	very high
April Weather	17°C (63°F)	104 mm (4.1 inches)	82%	very high
May Weather	22°C (72°F)	106 mm (4.2 inches)	83%	very high
June Weather	25°C (77°F)	79 mm (3.1 inches)	82%	extreme
July Weather	27°C (81°F)	101 mm (4.0 inches)	80%	extreme
August Weather	26°C (79°F)	114 mm (4.5 inches)	74%	very high
September Weather	24°C (75°F)	128 mm (5.0 inches)	75%	very high
October Weather	19°C (66°F)	87 mm (3.4 inches)	79%	very high
November Weather	11°C (52°F)	90 mm (3.5 inches)	87%	moderate
December Weather	9°C (48°F)	124 mm (4.9 inches)	87%	moderate