January Weather in Head of the Harbor, United States

Last updated: June 24, 2025

In January, the average temperature in Head of the Harbor, United States hovers around 1°C (34°F), creating a chilly atmosphere for residents and visitors alike. Be prepared for a wide temperature range, with minimums plunging to -16°C (4°F) and maximums reaching a pleasantly mild 18°C (65°F). Precipitation levels during this month are around 70 mm (2.8 in), typically spread across 8 days, while the air remains notably humid with an average humidity of 84%.

January Temperature in Head of the Harbor

In January in Head of the Harbor, the average temperature is 1°C (34°F). Maximum can reach 18°C (65°F) and minimum can be as low as -16°C (4°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both chilly and mild conditions.

January Weather in Head of the Harbor: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Head of the Harbor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Head of the Harbor, January typically has an average temperature of 1°C (34°F), with highs reaching up to 18°C (65°F) and lows dropping to around -16°C (4°F).

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

January Precipitation in Head of the Harbor

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

January Precipitation Trends in Head of the Harbor

The chart displays monthly precipitation patterns in Head of the Harbor, 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 Head of the Harbor, 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.

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Millimeters (mm) Inches (in)

January Humidity in Head of the Harbor

In Head of the Harbor in January humidity is 84%. With an average temperature of 1°C (34°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and requiring extra layers to keep warm while navigating the damp air.

January Average Humidity in Head of the Harbor

This chart illustrates the average monthly humidity levels in Head of the Harbor, 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 Head of the Harbor 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 Head of the Harbor

In Head of the Harbor 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 Head of the Harbor, you can check the information here.

Maximum UV Index Levels in Head of the Harbor for January

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

Data source: Head of the Harbor 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 Head of the Harbor Compares to Other Months

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

This table compares monthly weather conditions in Head of the Harbor, 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 (34°F)	70 mm (2.8 inches)	84%	moderate
February Weather	2°C (36°F)	99 mm (3.9 inches)	82%	moderate
March Weather	5°C (41°F)	95 mm (3.8 inches)	81%	high
April Weather	10°C (50°F)	118 mm (4.7 inches)	78%	very high
May Weather	15°C (60°F)	110 mm (4.3 inches)	69%	very high
June Weather	21°C (70°F)	90 mm (3.5 inches)	69%	very high
July Weather	25°C (77°F)	132 mm (5.2 inches)	62%	very high
August Weather	24°C (75°F)	108 mm (4.3 inches)	65%	very high
September Weather	21°C (69°F)	92 mm (3.6 inches)	68%	very high
October Weather	15°C (60°F)	129 mm (5.1 inches)	74%	high
November Weather	8°C (47°F)	94 mm (3.7 inches)	82%	moderate
December Weather	4°C (39°F)	119 mm (4.7 inches)	80%	low