January Weather in Exeter, United States

Last updated: June 24, 2025

In January, the average temperature in Exeter, United States hovers around 10°C (51°F). Expect minimums to dip as low as -2°C (28°F) and maximums reaching up to 23°C (74°F). With an average precipitation of 86 mm (3.4 in) spread over 7 days, it's wise to be prepared for some rainy spells. The air can feel quite humid, with an average humidity level of 82%.

January Temperature in Exeter

In January in Exeter, the average temperature is 10°C (51°F). The maximum can reach 23°C (74°F), while the minimum can drop as low as -2°C (28°F). Be sure to pack layers to stay comfortable as you explore the varying temperatures!

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

The chart illustrates January temperature patterns in Exeter, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Exeter, January typically has an average temperature of 10°C (51°F), with highs reaching up to 23°C (74°F) and lows dropping to around -2°C (28°F).

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

January Precipitation in Exeter

In Exeter in January, the total precipitation amount is 86 mm (3.4 in) over a span of 7 days.

January Precipitation Trends in Exeter

The chart displays monthly precipitation patterns in Exeter, 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 Exeter, January typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 7 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 Exeter

In Exeter in January humidity is 82%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that clings to your skin, making outdoor adventures less appealing and prompting travelers to seek cozy indoor activities or warm drinks to counter the brisk air.

January Average Humidity in Exeter

This chart illustrates the average monthly humidity levels in Exeter, 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 Exeter is approximately 82%, 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 Exeter

In Exeter 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 Exeter, you can check the information here.

Maximum UV Index Levels in Exeter for January

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

Data source: Exeter 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 Exeter Compares to Other Months

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

This table compares monthly weather conditions in Exeter, 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 (51°F)	86 mm (3.4 inches)	82%	moderate
February Weather	11°C (52°F)	87 mm (3.4 inches)	85%	moderate
March Weather	13°C (57°F)	113 mm (4.5 inches)	80%	very high
April Weather	17°C (64°F)	44 mm (1.7 inches)	72%	very high
May Weather	21°C (71°F)	30 mm (1.2 inches)	58%	very high
June Weather	27°C (81°F)	1 mm (0.0 inches)	49%	extreme
July Weather	31°C (88°F)	0 mm (0.0 inches)	36%	extreme
August Weather	31°C (87°F)	0 mm (0.0 inches)	30%	very high
September Weather	27°C (80°F)	2 mm (0.1 inches)	42%	very high
October Weather	20°C (68°F)	13 mm (0.5 inches)	59%	high
November Weather	14°C (58°F)	42 mm (1.7 inches)	78%	moderate
December Weather	10°C (50°F)	78 mm (3.1 inches)	79%	moderate