January Weather in Rock Hill, United States

Last updated: June 24, 2025

In January, the average temperature in Rock Hill, United States hovers around -3°C (27°F). Expect a chilly range, with minimums dipping to -23°C (-10°F) and maximums reaching up to 16°C (61°F). Precipitation is quite notable, averaging 88 mm (3.5 in) over 9 days, while the average humidity sits at a brisk 84%. Be sure to bundle up if you're visiting!

January Temperature in Rock Hill

In January in Rock Hill, the average temperature is -3°C (27°F), with maximums reaching up to 16°C (61°F) and minimums dropping as low as -23°C (-10°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

January Weather in Rock Hill: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Rock Hill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rock Hill, January typically has an average temperature of -3°C (27°F), with highs reaching up to 16°C (61°F) and lows dropping to around -23°C (-10°F).

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

January Precipitation in Rock Hill

In Rock Hill in January, the precipitation amount is 88 mm (3.5 in) over the course of 9 days.

January Precipitation Trends in Rock Hill

The chart displays monthly precipitation patterns in Rock Hill, 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 Rock Hill, January typically receives around 88 mm (3.5 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 Rock Hill

In Rock Hill in January humidity is 84%. With an average temperature of -3°C (27°F), this humidity feels like a heavy blanket that wraps around you, making travel uncomfortable and your breath visible in the cold air.

January Average Humidity in Rock Hill

This chart illustrates the average monthly humidity levels in Rock Hill, 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 Rock Hill is approximately 84%, 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 Rock Hill

In Rock Hill 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 Rock Hill, you can check the information here.

Maximum UV Index Levels in Rock Hill for January

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

Data source: Rock Hill 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 Rock Hill Compares to Other Months

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

This table compares monthly weather conditions in Rock Hill, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	88 mm (3.5 inches)	84%	moderate
February Weather	-1°C (30°F)	115 mm (4.5 inches)	82%	moderate
March Weather	2°C (36°F)	101 mm (4.0 inches)	81%	high
April Weather	8°C (47°F)	143 mm (5.6 inches)	78%	very high
May Weather	14°C (58°F)	150 mm (5.9 inches)	69%	very high
June Weather	19°C (66°F)	124 mm (4.9 inches)	69%	very high
July Weather	22°C (72°F)	141 mm (5.6 inches)	62%	very high
August Weather	21°C (70°F)	136 mm (5.4 inches)	65%	very high
September Weather	18°C (64°F)	103 mm (4.0 inches)	68%	very high
October Weather	12°C (54°F)	164 mm (6.4 inches)	74%	high
November Weather	4°C (39°F)	110 mm (4.3 inches)	82%	moderate
December Weather	0°C (32°F)	126 mm (4.9 inches)	80%	low