January Weather in Manhattan, United States

Last updated: June 24, 2025

In January, the average temperature in Manhattan, United States hovers around -6°C (22°F). Expect the mercury to dip as low as -29°C (-20°F) on colder days, while some warmer afternoons can reach up to 6°C (43°F). With an average precipitation of 24 mm (0.9 in) over 7 days, the landscape can be quite damp, contributing to a high average humidity level of 93%.

January Temperature in Manhattan

In January in Manhattan, the average temperature is -6°C (22°F). Maximum temperatures can reach 6°C (43°F), while minimums can drop as low as -29°C (-20°F). Travelers should prepare for cold weather and dress in layers to stay warm during their visit.

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

The chart illustrates January temperature patterns in Manhattan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Manhattan, January typically has an average temperature of -6°C (22°F), with highs reaching up to 6°C (43°F) and lows dropping to around -29°C (-20°F).

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

January Precipitation in Manhattan

In Manhattan in January, the precipitation amount is 24 mm (0.9 in) over the course of 7 days.

January Precipitation Trends in Manhattan

The chart displays monthly precipitation patterns in Manhattan, 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 Manhattan, January typically receives around 24 mm (0.9 inches) of precipitation spread over approximately 7 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 Manhattan

In Manhattan in January humidity is 93%. With an average temperature of -6°C (22°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable as the damp air clings to your clothing and slows your movements.

January Average Humidity in Manhattan

This chart illustrates the average monthly humidity levels in Manhattan, 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 Manhattan is approximately 93%, 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 Manhattan

In Manhattan 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 Manhattan, you can check the information here.

Maximum UV Index Levels in Manhattan for January

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

Data source: Manhattan 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 Manhattan Compares to Other Months

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

This table compares monthly weather conditions in Manhattan, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	24 mm (0.9 inches)	93%	moderate
February Weather	-7°C (19°F)	50 mm (2.0 inches)	92%	moderate
March Weather	0°C (31°F)	36 mm (1.4 inches)	89%	high
April Weather	3°C (38°F)	70 mm (2.8 inches)	83%	very high
May Weather	9°C (49°F)	82 mm (3.2 inches)	79%	extreme
June Weather	15°C (60°F)	86 mm (3.4 inches)	76%	extreme
July Weather	20°C (68°F)	26 mm (1.0 inches)	74%	very high
August Weather	19°C (66°F)	34 mm (1.3 inches)	69%	very high
September Weather	14°C (57°F)	47 mm (1.8 inches)	67%	very high
October Weather	4°C (40°F)	52 mm (2.0 inches)	72%	high
November Weather	-1°C (31°F)	37 mm (1.5 inches)	89%	moderate
December Weather	-5°C (23°F)	30 mm (1.2 inches)	94%	low