January Weather in Nashua, United States

Last updated: June 24, 2025

In January, the average temperature in Nashua, United States hovers around -7°C (19°F), with extremes ranging from a chilling -34°C (-29°F) to a mild 12°C (53°F). Expect about 38 mm (1.5 in) of precipitation over 6 days, contributing to an average humidity level of 82%. Bundle up and prepare for a wintry experience!

January Temperature in Nashua

In January in Nashua, the average temperature is -7°C (19°F). The maximum can reach 12°C (53°F), and the minimum can be as low as -34°C (-29°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for chilly conditions.

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

The chart illustrates January temperature patterns in Nashua, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nashua, January typically has an average temperature of -7°C (19°F), with highs reaching up to 12°C (53°F) and lows dropping to around -34°C (-29°F).

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

January Precipitation in Nashua

In Nashua in January, the total precipitation amount is 38 mm (1.5 in) spread over 6 days.

January Precipitation Trends in Nashua

The chart displays monthly precipitation patterns in Nashua, 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 Nashua, January typically receives around 38 mm (1.5 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 Nashua

In Nashua in January, humidity is 82%. With an average temperature of -7°C (19°F), this humidity feels like a biting chill that seeps through every layer, making outdoor adventures seem daunting and travel plans require extra preparation for warmth and comfort.

January Average Humidity in Nashua

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

In Nashua 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 Nashua, you can check the information here.

Maximum UV Index Levels in Nashua for January

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

Data source: Nashua 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 Nashua Compares to Other Months

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

This table compares monthly weather conditions in Nashua, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (19°F)	38 mm (1.5 inches)	82%	moderate
February Weather	-7°C (19°F)	50 mm (2.0 inches)	84%	moderate
March Weather	2°C (36°F)	72 mm (2.8 inches)	80%	moderate
April Weather	8°C (46°F)	72 mm (2.8 inches)	81%	very high
May Weather	16°C (60°F)	163 mm (6.4 inches)	74%	very high
June Weather	22°C (72°F)	128 mm (5.0 inches)	80%	extreme
July Weather	23°C (74°F)	92 mm (3.6 inches)	80%	very high
August Weather	21°C (71°F)	119 mm (4.7 inches)	77%	very high
September Weather	18°C (65°F)	114 mm (4.5 inches)	75%	very high
October Weather	10°C (50°F)	130 mm (5.1 inches)	80%	moderate
November Weather	2°C (35°F)	50 mm (2.0 inches)	87%	moderate
December Weather	-2°C (28°F)	37 mm (1.4 inches)	83%	moderate