January Weather in South Beloit, United States

Last updated: June 24, 2025

In January, the average temperature in South Beloit, United States hovers around -5°C (23°F). However, be prepared for extreme fluctuations; temperatures can plummet to a chilling -32°C (-25°F) or rise to a mild 13°C (55°F). With an average precipitation of 60 mm (2.3 in) spread over 7 days, and an average humidity of 85%, this month brings a mix of cold and damp conditions. Stay warm and dry!

January Temperature in South Beloit

In January in South Beloit, the average temperature is -5°C (23°F), with a maximum that can reach 13°C (55°F) and a minimum that can be as low as -32°C (-25°F). Be sure to bundle up and prepare for a range of temperatures when traveling to South Beloit during this time!

January Weather in South Beloit: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in South Beloit, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Beloit, January typically has an average temperature of -5°C (23°F), with highs reaching up to 13°C (55°F) and lows dropping to around -32°C (-25°F).

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

January Precipitation in South Beloit

In South Beloit in January, the total precipitation amount is 60 mm (2.3 in) spread over a duration of 7 days.

January Precipitation Trends in South Beloit

The chart displays monthly precipitation patterns in South Beloit, 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 South Beloit, January typically receives around 60 mm (2.3 inches) of precipitation spread over approximately 7 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 South Beloit

In South Beloit in January, humidity is 85%. With an average temperature of -5°C (23°F), this humidity feels like a biting chill that clings to your skin, making even the briefest outdoor excursions feel daunting and uncomfortable.

January Average Humidity in South Beloit

This chart illustrates the average monthly humidity levels in South Beloit, 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 South Beloit is approximately 85%, 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 South Beloit

In South Beloit 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 South Beloit, you can check the information here.

Maximum UV Index Levels in South Beloit for January

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

Data source: South Beloit 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 South Beloit Compares to Other Months

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

This table compares monthly weather conditions in South Beloit, 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 (23°F)	60 mm (2.3 inches)	85%	moderate
February Weather	-4°C (25°F)	54 mm (2.1 inches)	85%	moderate
March Weather	3°C (38°F)	63 mm (2.5 inches)	85%	high
April Weather	8°C (47°F)	103 mm (4.1 inches)	85%	very high
May Weather	16°C (60°F)	142 mm (5.6 inches)	78%	very high
June Weather	22°C (71°F)	107 mm (4.2 inches)	80%	very high
July Weather	24°C (75°F)	73 mm (2.9 inches)	78%	very high
August Weather	22°C (72°F)	87 mm (3.4 inches)	76%	very high
September Weather	19°C (66°F)	108 mm (4.3 inches)	79%	very high
October Weather	11°C (53°F)	109 mm (4.3 inches)	83%	moderate
November Weather	3°C (37°F)	47 mm (1.8 inches)	88%	moderate
December Weather	-1°C (31°F)	52 mm (2.0 inches)	81%	low