January Weather in Hopkinton, United States

Last updated: June 24, 2025

In Hopkinton, United States, the average temperature in January hovers around -1°C (31°F). While it's not uncommon to experience a brisk minimum of -23°C (-9°F), temperatures can occasionally soar to a maximum of 20°C (69°F). During this month, expect 67 mm (2.6 in) of precipitation spread over 8 days, with an average humidity of 86% making the air feel quite brisk and refreshing.

January Temperature in Hopkinton

In January in Hopkinton, the average temperature is -1°C (31°F). Maximums can reach 20°C (69°F), while minimums can drop as low as -23°C (-9°F). Be prepared for a wide range of temperatures when traveling, so pack accordingly!

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

The chart illustrates January temperature patterns in Hopkinton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hopkinton, January typically has an average temperature of -1°C (31°F), with highs reaching up to 20°C (69°F) and lows dropping to around -23°C (-9°F).

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

January Precipitation in Hopkinton

In Hopkinton in January, the total precipitation amount is 67 mm (2.6 in) over the course of 8 days.

January Precipitation Trends in Hopkinton

The chart displays monthly precipitation patterns in Hopkinton, 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 Hopkinton, January typically receives around 67 mm (2.6 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 Hopkinton

In Hopkinton in January humidity is 86%. With an average temperature of -1°C (31°F), this humidity feels like an eerie chill enveloping you, making travel uncomfortable as the damp air bites into your skin and the cold seeps through even the warmest of clothes, creating an atmosphere that is heavy and uninviting.

January Average Humidity in Hopkinton

This chart illustrates the average monthly humidity levels in Hopkinton, 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 Hopkinton is approximately 86%, 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 Hopkinton

In Hopkinton 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 Hopkinton, you can check the information here.

Maximum UV Index Levels in Hopkinton for January

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

Data source: Hopkinton 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 Hopkinton Compares to Other Months

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

This table compares monthly weather conditions in Hopkinton, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	67 mm (2.6 inches)	86%	moderate
February Weather	0°C (33°F)	85 mm (3.3 inches)	84%	moderate
March Weather	3°C (38°F)	91 mm (3.6 inches)	82%	high
April Weather	9°C (49°F)	124 mm (4.9 inches)	80%	very high
May Weather	15°C (59°F)	92 mm (3.6 inches)	72%	very high
June Weather	20°C (69°F)	87 mm (3.4 inches)	72%	very high
July Weather	23°C (74°F)	131 mm (5.1 inches)	67%	very high
August Weather	23°C (74°F)	89 mm (3.5 inches)	66%	very high
September Weather	19°C (66°F)	83 mm (3.3 inches)	71%	high
October Weather	13°C (56°F)	139 mm (5.5 inches)	78%	high
November Weather	6°C (43°F)	96 mm (3.8 inches)	84%	moderate
December Weather	1°C (34°F)	118 mm (4.6 inches)	81%	low