January Weather in Somerset, United States

Last updated: June 24, 2025

In January, the average temperature in Somerset, United States is a comfortable 12°C (54°F). However, prepare for some weather variability, as temperatures can dip as low as -7°C (20°F) or soar to 28°C (83°F). Expect about 36 mm (1.4 in) of precipitation over roughly 6 days, and with an average humidity of 79%, it’s advisable to keep an umbrella handy!

January Temperature in Somerset

In January in Somerset, the average temperature is 12°C (54°F), with a maximum that can reach 28°C (83°F) and a minimum that can drop as low as -7°C (20°F). Travelers should be prepared for a wide range of temperatures and pack accordingly, ensuring comfort for both warmer and cooler conditions.

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

The chart illustrates January temperature patterns in Somerset, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Somerset, January typically has an average temperature of 12°C (54°F), with highs reaching up to 28°C (83°F) and lows dropping to around -7°C (20°F).

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

January Precipitation in Somerset

In Somerset in January, the total precipitation amount is 36 mm (1.4 in), which falls over the course of 6 days.

January Precipitation Trends in Somerset

The chart displays monthly precipitation patterns in Somerset, 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 Somerset, January typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 6 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 Somerset

In Somerset in January, humidity is 79%. With an average temperature of 12°C (54°F), this humidity makes traveling feel quite muggy, leading to a sticky discomfort that can sap your energy and make outdoor activities less enjoyable.

January Average Humidity in Somerset

This chart illustrates the average monthly humidity levels in Somerset, 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 Somerset is approximately 79%, 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 Somerset

In Somerset 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 Somerset.

Maximum UV Index Levels in Somerset for January

The chart shows the monthly maximum UV Index (UVI) for Somerset 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 Somerset typically reaches 5, which falls under the moderate exposure category.

Data source: Somerset 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 Somerset Compares to Other Months

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

This table compares monthly weather conditions in Somerset, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	36 mm (1.4 inches)	79%	moderate
February Weather	13°C (56°F)	48 mm (1.9 inches)	79%	very high
March Weather	19°C (66°F)	55 mm (2.2 inches)	74%	very high
April Weather	22°C (71°F)	59 mm (2.3 inches)	76%	extreme
May Weather	26°C (79°F)	108 mm (4.2 inches)	81%	extreme
June Weather	29°C (84°F)	59 mm (2.3 inches)	76%	extreme
July Weather	30°C (86°F)	60 mm (2.4 inches)	66%	extreme
August Weather	30°C (87°F)	42 mm (1.7 inches)	58%	extreme
September Weather	27°C (82°F)	107 mm (4.2 inches)	65%	extreme
October Weather	23°C (73°F)	76 mm (3.0 inches)	74%	very high
November Weather	17°C (62°F)	41 mm (1.6 inches)	81%	high
December Weather	14°C (57°F)	51 mm (2.0 inches)	86%	moderate