January Weather in Belleville, United States

Last updated: June 24, 2025

In Belleville, United States, the average temperature in January hovers around -2°C (30°F), making it a chilly time of year. Temperatures can dip as low as -26°C (-14°F) but may also reach highs of 18°C (64°F). Expect 25 mm (1.0 in) of precipitation over approximately 4 days, with an average humidity level of 74% adding to the brisk atmosphere.

January Temperature in Belleville

In January in Belleville, the average temperature is -2°C (30°F), with maximums reaching 18°C (64°F) and minimums plummeting to -26°C (-14°F). Travelers should be prepared for a wide temperature range and pack accordingly for their visit.

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

The chart illustrates January temperature patterns in Belleville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Belleville, January typically has an average temperature of -2°C (30°F), with highs reaching up to 18°C (64°F) and lows dropping to around -26°C (-14°F).

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

January Precipitation in Belleville

In Belleville in January, the precipitation amount is 25 mm (1.0 in) over the course of 4 days.

January Precipitation Trends in Belleville

The chart displays monthly precipitation patterns in Belleville, 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 Belleville, January typically receives around 25 mm (1.0 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 Belleville

In Belleville in January, humidity is 74%. With an average temperature of -2°C (30°F), this humidity feels like a biting chill that clings to your skin, making travel less comfortable and requiring extra layers to stay warm and dry.

January Average Humidity in Belleville

This chart illustrates the average monthly humidity levels in Belleville, 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 Belleville is approximately 74%, 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 Belleville

In Belleville 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 Belleville, you can check the information here.

Maximum UV Index Levels in Belleville for January

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

Data source: Belleville 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 Belleville Compares to Other Months

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

This table compares monthly weather conditions in Belleville, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (30°F)	25 mm (1.0 inches)	74%	moderate
February Weather	-1°C (30°F)	23 mm (0.9 inches)	78%	moderate
March Weather	7°C (44°F)	80 mm (3.2 inches)	67%	high
April Weather	11°C (53°F)	49 mm (1.9 inches)	70%	very high
May Weather	18°C (64°F)	179 mm (7.0 inches)	82%	very high
June Weather	25°C (78°F)	72 mm (2.8 inches)	81%	extreme
July Weather	27°C (81°F)	79 mm (3.1 inches)	80%	extreme
August Weather	25°C (77°F)	95 mm (3.7 inches)	80%	very high
September Weather	22°C (72°F)	59 mm (2.3 inches)	73%	very high
October Weather	12°C (55°F)	88 mm (3.5 inches)	71%	high
November Weather	6°C (43°F)	23 mm (0.9 inches)	79%	moderate
December Weather	1°C (35°F)	37 mm (1.4 inches)	83%	moderate