January Weather in Manhattan, United States

Last updated: June 24, 2025

In January, the average temperature in Manhattan, United States hovers around -1°C (31°F). However, temperatures can fluctuate dramatically, reaching a minimum of -22°C (-8°F) and soaring to a maximum of 19°C (66°F). The weather also brings some precipitation, with an average of 32 mm (1.3 in) over 4 days, while humidity remains relatively high at 76%.

January Temperature in Manhattan

In January in Manhattan, the average temperature is -1°C (31°F), with a maximum that can reach 19°C (66°F) and a minimum that can dip as low as -22°C (-8°F). Be prepared for a wide range of temperatures, ensuring you pack layers for your trip.

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 -1°C (31°F), with highs reaching up to 19°C (66°F) and lows dropping to around -22°C (-8°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 total precipitation amount is 32 mm (1.3 in), accumulated over a period of 4 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 32 mm (1.3 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 Manhattan

In Manhattan in January, humidity is 76%. With an average temperature of -1°C (31°F), this humidity feels like a frigid chill clinging to your skin, making travel quite uncomfortable as the cold air intensifies the dampness, leaving you feeling even colder than the actual temperature.

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 76%, 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	-1°C (31°F)	32 mm (1.3 inches)	76%	moderate
February Weather	0°C (32°F)	29 mm (1.1 inches)	77%	moderate
March Weather	8°C (46°F)	88 mm (3.5 inches)	70%	high
April Weather	12°C (54°F)	69 mm (2.7 inches)	73%	very high
May Weather	19°C (66°F)	187 mm (7.4 inches)	82%	very high
June Weather	26°C (78°F)	86 mm (3.4 inches)	82%	extreme
July Weather	27°C (81°F)	81 mm (3.2 inches)	81%	extreme
August Weather	25°C (77°F)	121 mm (4.7 inches)	78%	very high
September Weather	22°C (73°F)	69 mm (2.7 inches)	71%	very high
October Weather	14°C (57°F)	98 mm (3.8 inches)	71%	high
November Weather	7°C (44°F)	34 mm (1.3 inches)	81%	moderate
December Weather	3°C (37°F)	28 mm (1.1 inches)	84%	moderate