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January Weather in Rock Hill, United States

Last updated: June 24, 2025

In January, the average temperature in Rock Hill, United States hovers around 0°C (33°F). Expect cool weather, with minimums dipping to -21°C (-5°F) and maximums reaching 20°C (68°F). Be prepared for some rain, as 76 mm (3.0 in) of precipitation is expected over 8 days. With an average humidity of 82%, it's a month to bundle up and enjoy cozy indoor activities!

January Temperature in Rock Hill

In January in Rock Hill, the average temperature is 0°C (33°F). Maximum temperatures can reach 20°C (68°F), while minimums can drop as low as -21°C (-5°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack accordingly for both cold and mild weather.

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 0°C (33°F), with highs reaching up to 20°C (68°F) and lows dropping to around -21°C (-5°F).
JanFebMarAprMayJunJulAugSepOctNovDec333647556776807672594539
Data source: Temperature data for Rock Hill 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 Rock Hill

In Rock Hill in January, the precipitation amount is 76 mm (3.0 in) spread over a duration of 8 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 76 mm (3.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec76821311281419593135571067360
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Rock Hill

In Rock Hill in January, humidity is 82%. With an average temperature of 0°C (33°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures feel much colder than the mercury suggests, and reminding you to bundle up as you explore.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109753
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.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)76 mm (3.0 inches)82%moderate
February Weather2°C (36°F)82 mm (3.2 inches)80%moderate
March Weather8°C (47°F)131 mm (5.2 inches)80%high
April Weather13°C (55°F)128 mm (5.0 inches)80%very high
May Weather19°C (67°F)141 mm (5.5 inches)82%very high
June Weather25°C (77°F)95 mm (3.8 inches)83%extreme
July Weather26°C (80°F)93 mm (3.6 inches)81%very high
August Weather25°C (76°F)135 mm (5.3 inches)80%very high
September Weather22°C (72°F)57 mm (2.2 inches)76%very high
October Weather15°C (59°F)106 mm (4.2 inches)76%high
November Weather7°C (45°F)73 mm (2.9 inches)85%moderate
December Weather4°C (40°F)60 mm (2.4 inches)86%moderate

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