January Weather in Greer, United States

Last updated: June 24, 2025

In January, the average temperature in Greer, United States hovers around 6°C (43°F). While the mercury can dip as low as -14°C (7°F), it can also reach highs of 25°C (77°F). Expect 98 mm (3.9 in) of precipitation over approximately 9 days, with an average humidity level of 86%, creating a moist atmosphere for the month.

January Temperature in Greer

In January in Greer, the average temperature is 6°C (43°F). Maximum temperatures can reach 25°C (77°F), while minimums can drop as low as -14°C (7°F). It's advisable to pack layers to stay comfortable during your travels.

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

The chart illustrates January temperature patterns in Greer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greer, January typically has an average temperature of 6°C (43°F), with highs reaching up to 25°C (77°F) and lows dropping to around -14°C (7°F).

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

January Precipitation in Greer

In Greer in January, the precipitation amount is 98 mm (3.9 in) spread over a duration of 9 days.

January Precipitation Trends in Greer

The chart displays monthly precipitation patterns in Greer, 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 Greer, January typically receives around 98 mm (3.9 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 Greer

In Greer in January humidity is 86%. With an average temperature of 6°C (43°F), this humidity feels like a chilling blanket enveloping you, making outdoor exploration feel damp and uncomfortable.

January Average Humidity in Greer

This chart illustrates the average monthly humidity levels in Greer, 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 Greer 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 Greer

In Greer 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 Greer for better planning.

Maximum UV Index Levels in Greer for January

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

Data source: Greer 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 Greer Compares to Other Months

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

This table compares monthly weather conditions in Greer, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	98 mm (3.9 inches)	86%	moderate
February Weather	9°C (48°F)	136 mm (5.4 inches)	85%	high
March Weather	12°C (53°F)	100 mm (4.0 inches)	84%	very high
April Weather	16°C (61°F)	126 mm (5.0 inches)	82%	very high
May Weather	21°C (70°F)	128 mm (5.0 inches)	83%	extreme
June Weather	24°C (76°F)	77 mm (3.0 inches)	82%	extreme
July Weather	26°C (80°F)	82 mm (3.2 inches)	80%	extreme
August Weather	25°C (78°F)	109 mm (4.3 inches)	74%	very high
September Weather	23°C (74°F)	144 mm (5.7 inches)	75%	very high
October Weather	18°C (64°F)	133 mm (5.2 inches)	79%	very high
November Weather	10°C (50°F)	93 mm (3.6 inches)	87%	high
December Weather	8°C (46°F)	130 mm (5.1 inches)	87%	moderate