January Weather in Chester, United States

Last updated: June 24, 2025

In January, the average temperature in Chester, United States hovers around 0°C (32°F). Expect chilly conditions, with minimum temperatures dipping to -17°C (1°F) and a maximum reaching 12°C (54°F). During this time, you might encounter 217 mm (8.5 in) of precipitation spread over 12 days, contributing to a high average humidity of 86%. Make sure to bundle up and stay dry!

January Temperature in Chester

In January in Chester, the average temperature is 0°C (32°F). Maximum temperatures can reach 12°C (54°F), while minimums can drop to as low as -17°C (1°F). Travelers should prepare for a wide range of temperatures and pack accordingly to stay warm and comfortable.

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

The chart illustrates January temperature patterns in Chester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chester, January typically has an average temperature of 0°C (32°F), with highs reaching up to 12°C (54°F) and lows dropping to around -17°C (1°F).

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

January Precipitation in Chester

In Chester in January, the total precipitation amount is 217 mm (8.5 in) spread over a period of 12 days.

January Precipitation Trends in Chester

The chart displays monthly precipitation patterns in Chester, 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 Chester, January typically receives around 217 mm (8.5 inches) of precipitation spread over approximately 12 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 Chester

In Chester in January humidity is 86%. With an average temperature of 0°C (32°F), this humidity feels like a biting chill that seeps into your bones, making travel feel uncomfortable and damp, as the cold air combines with the moisture to create a brisk sensation that may deter outdoor exploration.

January Average Humidity in Chester

This chart illustrates the average monthly humidity levels in Chester, 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 Chester is approximately 86%, 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 Chester

In Chester in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Chester for better planning.

Maximum UV Index Levels in Chester for January

The chart shows the monthly maximum UV Index (UVI) for Chester 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 Chester typically reaches 4, which falls under the moderate exposure category.

Data source: Chester 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 Chester Compares to Other Months

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

This table compares monthly weather conditions in Chester, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	217 mm (8.5 inches)	86%	moderate
February Weather	0°C (32°F)	232 mm (9.1 inches)	87%	moderate
March Weather	2°C (35°F)	198 mm (7.8 inches)	86%	very high
April Weather	5°C (42°F)	100 mm (3.9 inches)	83%	very high
May Weather	11°C (52°F)	75 mm (3.0 inches)	72%	extreme
June Weather	17°C (63°F)	22 mm (0.9 inches)	67%	extreme
July Weather	22°C (71°F)	9 mm (0.3 inches)	56%	extreme
August Weather	21°C (69°F)	16 mm (0.6 inches)	42%	extreme
September Weather	16°C (61°F)	27 mm (1.1 inches)	46%	very high
October Weather	9°C (49°F)	53 mm (2.1 inches)	67%	high
November Weather	4°C (39°F)	106 mm (4.2 inches)	86%	moderate
December Weather	-1°C (31°F)	171 mm (6.7 inches)	86%	moderate