January Weather in Greenville, United States

Last updated: June 24, 2025

In January, the average temperature in Greenville, United States hovers around 12°C (54°F). Expect a chill in the air with minimums dipping to a brisk -6°C (22°F), while days can warm up to a maximum of 27°C (82°F). With an average humidity of 85%, be prepared for a damp atmosphere. Additionally, anticipate precipitation totaling 70 mm (2.8 in) over about 7 days. 🌧️

January Temperature in Greenville

In January in Greenville, the average temperature is 12°C (54°F), with maximums reaching 27°C (82°F) and minimums dropping as low as -6°C (22°F). This wide range of temperatures makes it essential for travelers to pack layers to stay comfortable during their visit.

January Weather in Greenville: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Greenville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greenville, January typically has an average temperature of 12°C (54°F), with highs reaching up to 27°C (82°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec546063687580818179736156
Data source: Temperature data for Greenville 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 Greenville

In Greenville in January, the precipitation amount is 70 mm (2.8 in) over a span of 7 days.

January Precipitation Trends in Greenville

The chart displays monthly precipitation patterns in Greenville, 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 Greenville, January typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec70914887831721811561127753111
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Greenville

In Greenville in January, humidity is 85%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making traveling not only uncomfortable but also exhausting as the damp air clings to your skin and slows your movements.

January Average Humidity in Greenville

This chart illustrates the average monthly humidity levels in Greenville, 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 Greenville is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%80%76%73%74%80%79%83%77%84%88%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Greenville

In Greenville in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Greenville.

Maximum UV Index Levels in Greenville for January

The chart shows the monthly maximum UV Index (UVI) for Greenville 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 Greenville typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589101111121110864
Data source: Greenville 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 Greenville Compares to Other Months

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

This table compares monthly weather conditions in Greenville, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)70 mm (2.8 inches)85%moderate
February Weather15°C (60°F)91 mm (3.6 inches)82%very high
March Weather17°C (64°F)48 mm (1.9 inches)80%very high
April Weather20°C (68°F)87 mm (3.4 inches)76%very high
May Weather24°C (76°F)83 mm (3.3 inches)73%extreme
June Weather26°C (80°F)172 mm (6.8 inches)74%extreme
July Weather27°C (81°F)181 mm (7.1 inches)80%extreme
August Weather27°C (81°F)156 mm (6.1 inches)79%extreme
September Weather26°C (80°F)112 mm (4.4 inches)83%very high
October Weather23°C (74°F)77 mm (3.0 inches)77%very high
November Weather16°C (61°F)53 mm (2.1 inches)84%high
December Weather14°C (57°F)111 mm (4.4 inches)88%moderate

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