January Weather in Harvard, United States

Last updated: June 24, 2025

In January, the average temperature in Harvard, United States hovers around -3°C (27°F). Expect a chilly range, with minimum temperatures plummeting to -23°C (-8°F) and a pleasantly rare maximum reaching 16°C (62°F). During this month, precipitation totals approximately 29 mm (1.2 in) over 4 days, complemented by an average humidity level of 73%.

January Temperature in Harvard

In January in Harvard, the average temperature is -3°C (27°F). Maximum temperatures can reach 16°C (62°F), while minimums can dip as low as -23°C (-8°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates January temperature patterns in Harvard, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harvard, January typically has an average temperature of -3°C (27°F), with highs reaching up to 16°C (62°F) and lows dropping to around -23°C (-8°F).

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

January Precipitation in Harvard

In Harvard in January, the total precipitation amount is 29 mm (1.2 in) spread over the course of 4 days.

January Precipitation Trends in Harvard

The chart displays monthly precipitation patterns in Harvard, 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 Harvard, January typically receives around 29 mm (1.2 inches) of precipitation spread over approximately 4 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 Harvard

In Harvard in January humidity is 73%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that numbs the skin, making it essential for travelers to bundle up in warm layers and be prepared for the dampness that seeps through clothing, potentially leading to an uncomfortable experience outdoors.

January Average Humidity in Harvard

This chart illustrates the average monthly humidity levels in Harvard, 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 Harvard is approximately 73%, 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 Harvard

In Harvard 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 Harvard, you can check the information here.

Maximum UV Index Levels in Harvard for January

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

Data source: Harvard 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 Harvard Compares to Other Months

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

This table compares monthly weather conditions in Harvard, 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 (27°F)	29 mm (1.2 inches)	73%	moderate
February Weather	-3°C (27°F)	22 mm (0.9 inches)	81%	moderate
March Weather	5°C (42°F)	89 mm (3.5 inches)	69%	high
April Weather	10°C (51°F)	49 mm (1.9 inches)	71%	very high
May Weather	17°C (62°F)	172 mm (6.8 inches)	80%	very high
June Weather	24°C (76°F)	91 mm (3.6 inches)	83%	extreme
July Weather	26°C (78°F)	68 mm (2.7 inches)	84%	extreme
August Weather	24°C (75°F)	84 mm (3.3 inches)	84%	very high
September Weather	21°C (70°F)	67 mm (2.6 inches)	77%	very high
October Weather	11°C (53°F)	84 mm (3.3 inches)	72%	high
November Weather	5°C (41°F)	22 mm (0.9 inches)	80%	moderate
December Weather	0°C (33°F)	41 mm (1.6 inches)	79%	moderate