January Weather in Summersville, United States

Last updated: June 24, 2025

In January, the average temperature in Summersville, United States hovers around 0°C (32°F), with extremes ranging from a chilly -22°C (-8°F) to a balmy 19°C (67°F). Expect approximately 110 mm (4.3 in) of precipitation spread over 16 days, contributing to the region's high average humidity of 88%.

January Temperature in Summersville

In January in Summersville, the average temperature is 0°C (32°F). Maximum temperatures can reach 19°C (67°F), while minimums can plummet to as low as -22°C (-8°F). Travelers should be prepared for chilly conditions and significant temperature fluctuations, so layering clothing is advisable.

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

The chart illustrates January temperature patterns in Summersville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Summersville, January typically has an average temperature of 0°C (32°F), with highs reaching up to 19°C (67°F) and lows dropping to around -22°C (-8°F).

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

January Precipitation in Summersville

In Summersville in January, the precipitation amount is 110 mm (4.3 in) over a span of 16 days.

January Precipitation Trends in Summersville

The chart displays monthly precipitation patterns in Summersville, 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 Summersville, January typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 16 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Summersville

In Summersville in January, humidity is 88%. With an average temperature of 0°C (32°F), this humidity feels like a chilly, damp blanket enveloping you, making travel uncomfortable as every breath seems to carry the weight of the cold moisture, turning each step into a struggle against the biting chill.

January Average Humidity in Summersville

This chart illustrates the average monthly humidity levels in Summersville, 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 Summersville is approximately 88%, 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 Summersville

In Summersville 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 Summersville, you can check the information here.

Maximum UV Index Levels in Summersville for January

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

Data source: Summersville 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 Summersville Compares to Other Months

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

This table compares monthly weather conditions in Summersville, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	110 mm (4.3 inches)	88%	moderate
February Weather	3°C (38°F)	171 mm (6.7 inches)	88%	moderate
March Weather	6°C (43°F)	133 mm (5.2 inches)	88%	high
April Weather	11°C (52°F)	158 mm (6.2 inches)	86%	very high
May Weather	16°C (62°F)	177 mm (7.0 inches)	82%	very high
June Weather	20°C (68°F)	150 mm (5.9 inches)	84%	extreme
July Weather	22°C (72°F)	129 mm (5.1 inches)	82%	extreme
August Weather	21°C (70°F)	133 mm (5.3 inches)	73%	very high
September Weather	19°C (66°F)	110 mm (4.3 inches)	73%	very high
October Weather	13°C (56°F)	131 mm (5.2 inches)	81%	high
November Weather	6°C (42°F)	90 mm (3.5 inches)	89%	moderate
December Weather	3°C (38°F)	134 mm (5.3 inches)	86%	moderate