January Weather in Exeter, United States

Last updated: June 24, 2025

In Exeter, United States, the average temperature in January is a chilly 2°C (36°F). Expect a wide range, with minimum temperatures dropping to -18°C (-1°F) and maximums peaking at 21°C (70°F). During this month, you'll encounter an average precipitation of 91 mm (3.6 in) over 8 days, paired with a high average humidity of 81%. Be prepared for varied weather conditions!

January Temperature in Exeter

In January in Exeter, the average temperature is 2°C (36°F). Maximums can reach 21°C (70°F), while minimums can drop to as low as -18°C (-1°F). It's essential to pack for a wide range of temperatures to ensure you're prepared for the changing weather during your travels.

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 2°C (36°F), with highs reaching up to 21°C (70°F) and lows dropping to around -18°C (-1°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 91 mm (3.6 in) over the course of 8 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 91 mm (3.6 inches) of precipitation spread over approximately 8 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 Exeter

In Exeter in January humidity is 81%. With an average temperature of 2°C (36°F), this humidity feels like a chilly dampness that seeps into your bones, making travel uncomfortable and necessitating extra layers to stay warm and dry.

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 81%, 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	2°C (36°F)	91 mm (3.6 inches)	81%	moderate
February Weather	4°C (39°F)	95 mm (3.7 inches)	78%	high
March Weather	10°C (50°F)	159 mm (6.3 inches)	76%	high
April Weather	13°C (56°F)	174 mm (6.8 inches)	78%	very high
May Weather	19°C (66°F)	172 mm (6.8 inches)	83%	very high
June Weather	24°C (76°F)	104 mm (4.1 inches)	83%	extreme
July Weather	26°C (79°F)	93 mm (3.7 inches)	78%	extreme
August Weather	25°C (77°F)	120 mm (4.7 inches)	68%	very high
September Weather	23°C (73°F)	56 mm (2.2 inches)	64%	very high
October Weather	15°C (59°F)	161 mm (6.3 inches)	70%	high
November Weather	8°C (47°F)	70 mm (2.7 inches)	83%	moderate
December Weather	6°C (42°F)	61 mm (2.4 inches)	87%	moderate