January Weather in Greenville, United States

Last updated: June 24, 2025

In January, the average temperature in Greenville, United States hovers around 10°C (50°F), making it a cool time of year. Expect a minimum of -9°C (17°F) and a maximum of 27°C (82°F), showcasing a wide temperature range. The region experiences 106 mm (4.2 in) of precipitation over approximately 9 days, contributing to an average humidity of 83%.

January Temperature in Greenville

In January in Greenville, the average temperature is 10°C (50°F). Maximums can reach 27°C (82°F) and minimums can be as low as -9°C (17°F). This range makes Greenville an ideal destination for travelers seeking both warm days and the option for cooler, refreshing evenings.

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 10°C (50°F), with highs reaching up to 27°C (82°F) and lows dropping to around -9°C (17°F).

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

January Precipitation in Greenville

In Greenville in January, the total precipitation amount is 106 mm (4.2 in), spread over the course of 9 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 106 mm (4.2 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 Greenville

In Greenville in January, humidity is 83%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration less comfortable and prompting visitors to seek cozy indoor activities.

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 83%, 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 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.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	106 mm (4.2 inches)	83%	moderate
February Weather	14°C (57°F)	119 mm (4.7 inches)	82%	very high
March Weather	16°C (62°F)	98 mm (3.9 inches)	79%	very high
April Weather	19°C (66°F)	121 mm (4.8 inches)	77%	extreme
May Weather	23°C (74°F)	119 mm (4.7 inches)	74%	extreme
June Weather	26°C (79°F)	136 mm (5.3 inches)	70%	extreme
July Weather	27°C (81°F)	116 mm (4.6 inches)	78%	extreme
August Weather	27°C (81°F)	125 mm (4.9 inches)	78%	extreme
September Weather	25°C (78°F)	107 mm (4.2 inches)	79%	very high
October Weather	21°C (71°F)	107 mm (4.2 inches)	74%	very high
November Weather	14°C (57°F)	69 mm (2.7 inches)	83%	high
December Weather	12°C (53°F)	133 mm (5.2 inches)	86%	moderate