January Weather in Amherst, United States

Last updated: June 24, 2025

In January, the average temperature in Amherst, United States hovers around 3°C (38°F), with a chilly minimum of -15°C (5°F) and a pleasant maximum of 21°C (70°F). Expect about 70 mm (2.8 in) of precipitation spread over 8 days, accompanied by a high average humidity of 84%. Be prepared for a mix of cool and wet weather!

January Temperature in Amherst

In January in Amherst, the average temperature is 3°C (38°F). Maximum temperatures can reach up to 21°C (70°F), while minimum temperatures can drop as low as -15°C (5°F). This climate variation offers travelers the chance to experience both chilly and mild weather, making it essential to pack accordingly for a visit.

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

The chart illustrates January temperature patterns in Amherst, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Amherst, January typically has an average temperature of 3°C (38°F), with highs reaching up to 21°C (70°F) and lows dropping to around -15°C (5°F).

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

January Precipitation in Amherst

In Amherst in January, the total precipitation amount is 70 mm (2.8 in), spread over the course of 8 days.

January Precipitation Trends in Amherst

The chart displays monthly precipitation patterns in Amherst, 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 Amherst, January typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 8 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 Amherst

In Amherst in January, humidity is 84%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as the cold air clings to you and the moisture creates an oppressive heaviness in the atmosphere.

January Average Humidity in Amherst

This chart illustrates the average monthly humidity levels in Amherst, 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 Amherst is approximately 84%, 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 Amherst

In Amherst 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 Amherst, you can check the information here.

Maximum UV Index Levels in Amherst for January

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

Data source: Amherst 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 Amherst Compares to Other Months

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

This table compares monthly weather conditions in Amherst, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	70 mm (2.8 inches)	84%	moderate
February Weather	6°C (44°F)	108 mm (4.2 inches)	84%	high
March Weather	9°C (49°F)	69 mm (2.7 inches)	84%	very high
April Weather	14°C (58°F)	126 mm (5.0 inches)	82%	very high
May Weather	19°C (67°F)	112 mm (4.4 inches)	82%	very high
June Weather	23°C (74°F)	94 mm (3.7 inches)	83%	extreme
July Weather	27°C (80°F)	55 mm (2.2 inches)	79%	very high
August Weather	25°C (77°F)	89 mm (3.5 inches)	77%	very high
September Weather	22°C (72°F)	102 mm (4.0 inches)	75%	very high
October Weather	17°C (62°F)	112 mm (4.4 inches)	81%	high
November Weather	8°C (47°F)	75 mm (3.0 inches)	87%	moderate
December Weather	5°C (42°F)	105 mm (4.1 inches)	85%	moderate