January Weather in Chelsea, United States

Last updated: June 24, 2025

In January, the average temperature in Chelsea, United States hovers around 3°C (38°F), with a range that can dip to a chilling -16°C (4°F) and rise to a pleasant 23°C (74°F). Expect 76 mm (3.0 in) of precipitation over approximately 6 days, and enjoy a relatively high average humidity of 77%.

January Temperature in Chelsea

In January in Chelsea, the average temperature is 3°C (38°F). The maximum can reach 23°C (74°F), while the minimum can drop as low as -16°C (4°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm and cold weather.

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

The chart illustrates January temperature patterns in Chelsea, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chelsea, January typically has an average temperature of 3°C (38°F), with highs reaching up to 23°C (74°F) and lows dropping to around -16°C (4°F).

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

January Precipitation in Chelsea

In Chelsea in January, the total precipitation amount reaches 76 mm (3.0 in) over the course of 6 days.

January Precipitation Trends in Chelsea

The chart displays monthly precipitation patterns in Chelsea, 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 Chelsea, January typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 6 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 Chelsea

In Chelsea in January humidity is 77%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill enveloping you, making any outdoor adventure feel more intense as you navigate the biting cold mixed with the heavy air.

January Average Humidity in Chelsea

This chart illustrates the average monthly humidity levels in Chelsea, 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 Chelsea is approximately 77%, 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 Chelsea

In Chelsea 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 Chelsea, you can check the information here.

Maximum UV Index Levels in Chelsea for January

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

Data source: Chelsea 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 Chelsea Compares to Other Months

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

This table compares monthly weather conditions in Chelsea, 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 (38°F)	76 mm (3.0 inches)	77%	moderate
February Weather	5°C (41°F)	68 mm (2.7 inches)	76%	high
March Weather	12°C (53°F)	122 mm (4.8 inches)	71%	high
April Weather	15°C (59°F)	139 mm (5.5 inches)	73%	very high
May Weather	21°C (69°F)	204 mm (8.0 inches)	83%	very high
June Weather	26°C (79°F)	103 mm (4.1 inches)	83%	extreme
July Weather	28°C (82°F)	97 mm (3.8 inches)	81%	extreme
August Weather	27°C (80°F)	113 mm (4.4 inches)	73%	very high
September Weather	24°C (76°F)	91 mm (3.6 inches)	67%	very high
October Weather	16°C (62°F)	139 mm (5.5 inches)	72%	high
November Weather	10°C (50°F)	53 mm (2.1 inches)	82%	moderate
December Weather	7°C (44°F)	50 mm (2.0 inches)	85%	moderate