January Weather in Coatesville, United States

Last updated: June 24, 2025

In January, the average temperature in Coatesville, United States hovers around -1°C (30°F), with the mercury dipping as low as -28°C (-18°F) and occasionally rising to a maximum of 18°C (64°F). Expect a notable precipitation amount of 84 mm (3.3 in) spread over approximately 9 days, while humidity levels remain high at an average of 87%.

January Temperature in Coatesville

In January, in Coatesville, the average temperature is -1°C (30°F). The maximum can reach 18°C (64°F), while the minimum can drop as low as -28°C (-18°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates January temperature patterns in Coatesville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Coatesville, January typically has an average temperature of -1°C (30°F), with highs reaching up to 18°C (64°F) and lows dropping to around -28°C (-18°F).

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

January Precipitation in Coatesville

In Coatesville in January, the precipitation amount is 84 mm (3.3 in) spread over 9 days.

January Precipitation Trends in Coatesville

The chart displays monthly precipitation patterns in Coatesville, 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 Coatesville, January typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Coatesville

In Coatesville in January, humidity is 87%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that penetrates through layers of clothing, making travel uncomfortable as the dampness clings to your skin, intensifying the cold and causing every gust of wind to feel even more frigid.

January Average Humidity in Coatesville

This chart illustrates the average monthly humidity levels in Coatesville, 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 Coatesville is approximately 87%, 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 Coatesville

In Coatesville 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 Coatesville, you can check the information here.

Maximum UV Index Levels in Coatesville for January

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

Data source: Coatesville 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 Coatesville Compares to Other Months

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

This table compares monthly weather conditions in Coatesville, 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 (30°F)	84 mm (3.3 inches)	87%	moderate
February Weather	1°C (33°F)	91 mm (3.6 inches)	85%	moderate
March Weather	6°C (43°F)	126 mm (5.0 inches)	86%	high
April Weather	11°C (52°F)	101 mm (4.0 inches)	84%	very high
May Weather	18°C (65°F)	141 mm (5.6 inches)	79%	very high
June Weather	23°C (74°F)	108 mm (4.3 inches)	82%	extreme
July Weather	25°C (77°F)	101 mm (4.0 inches)	79%	very high
August Weather	23°C (74°F)	104 mm (4.1 inches)	70%	very high
September Weather	21°C (70°F)	69 mm (2.7 inches)	69%	very high
October Weather	14°C (58°F)	111 mm (4.4 inches)	76%	high
November Weather	5°C (42°F)	89 mm (3.5 inches)	88%	moderate
December Weather	2°C (36°F)	82 mm (3.2 inches)	87%	moderate