January Weather in Chatham, United States

Last updated: June 24, 2025

In January, the average temperature in Chatham, United States hovers around 5°C (40°F). Expect a range that can dip as low as -14°C (7°F) and soar up to 23°C (74°F). During this month, the region experiences about 74 mm (2.9 in) of precipitation over 9 days, with an average humidity level of 84%, creating a distinctly crisp and damp atmosphere.

January Temperature in Chatham

In January in Chatham, the average temperature is 5°C (40°F). Maximum temperatures can reach 23°C (74°F), while minimums can drop as low as -14°C (7°F). Visitors should be prepared for a wide range of temperatures when traveling to Chatham during this month.

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

The chart illustrates January temperature patterns in Chatham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chatham, January typically has an average temperature of 5°C (40°F), with highs reaching up to 23°C (74°F) and lows dropping to around -14°C (7°F).

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

January Precipitation in Chatham

In Chatham in January, the precipitation amount is 74 mm (2.9 in), which occurs over a span of 9 days.

January Precipitation Trends in Chatham

The chart displays monthly precipitation patterns in Chatham, 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 Chatham, January typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 9 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 Chatham

In Chatham in January, humidity is 84%. With an average temperature of 5°C (40°F), this humidity feels like a cold, damp blanket enveloping you, making it challenging to enjoy outdoor activities and requiring extra layers for comfort during your travels.

January Average Humidity in Chatham

This chart illustrates the average monthly humidity levels in Chatham, 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 Chatham 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 Chatham

In Chatham 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 Chatham, you can check the information here.

Maximum UV Index Levels in Chatham for January

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

Data source: Chatham 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 Chatham Compares to Other Months

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

This table compares monthly weather conditions in Chatham, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (40°F)	74 mm (2.9 inches)	84%	moderate
February Weather	7°C (46°F)	110 mm (4.3 inches)	84%	high
March Weather	10°C (51°F)	70 mm (2.8 inches)	84%	very high
April Weather	15°C (60°F)	125 mm (4.9 inches)	82%	very high
May Weather	20°C (69°F)	121 mm (4.8 inches)	82%	very high
June Weather	24°C (75°F)	87 mm (3.4 inches)	83%	extreme
July Weather	27°C (80°F)	68 mm (2.7 inches)	79%	very high
August Weather	25°C (78°F)	102 mm (4.0 inches)	77%	very high
September Weather	23°C (73°F)	109 mm (4.3 inches)	75%	very high
October Weather	17°C (63°F)	111 mm (4.4 inches)	81%	very high
November Weather	9°C (49°F)	77 mm (3.0 inches)	87%	moderate
December Weather	7°C (44°F)	100 mm (3.9 inches)	85%	moderate