January Weather in Fairbury, United States

Last updated: June 24, 2025

In Fairbury, United States, the average temperature in January hovers around -3°C (27°F), with a minimum plummeting to -30°C (-22°F) and reaching a maximum of 17°C (62°F). Expect 64 mm (2.5 in) of precipitation spread over 8 days, contributing to an average humidity of 82%. Be prepared for crisp, chilly days and the occasional break of warmth!

January Temperature in Fairbury

In January in Fairbury, the average temperature is -3°C (27°F), with a maximum reaching 17°C (62°F) and a minimum plummeting as low as -30°C (-22°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack accordingly for both mild and extremely cold conditions.

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

The chart illustrates January temperature patterns in Fairbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fairbury, January typically has an average temperature of -3°C (27°F), with highs reaching up to 17°C (62°F) and lows dropping to around -30°C (-22°F).

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

January Precipitation in Fairbury

In Fairbury in January, the precipitation amount is 64 mm (2.5 in) over the course of 8 days.

January Precipitation Trends in Fairbury

The chart displays monthly precipitation patterns in Fairbury, 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 Fairbury, January typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 8 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 Fairbury

In Fairbury in January, humidity is 82%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps into your bones, making traveling uncomfortable and necessitating extra layers to stay warm while navigating through the damp air.

January Average Humidity in Fairbury

This chart illustrates the average monthly humidity levels in Fairbury, 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 Fairbury is approximately 82%, 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 Fairbury

In Fairbury 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 Fairbury, you can check the information here.

Maximum UV Index Levels in Fairbury for January

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

Data source: Fairbury 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 Fairbury Compares to Other Months

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

This table compares monthly weather conditions in Fairbury, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	64 mm (2.5 inches)	82%	moderate
February Weather	-2°C (29°F)	70 mm (2.8 inches)	83%	moderate
March Weather	5°C (42°F)	105 mm (4.1 inches)	84%	high
April Weather	10°C (51°F)	116 mm (4.5 inches)	85%	very high
May Weather	18°C (64°F)	158 mm (6.2 inches)	79%	very high
June Weather	23°C (74°F)	116 mm (4.5 inches)	82%	extreme
July Weather	25°C (77°F)	93 mm (3.7 inches)	80%	very high
August Weather	23°C (74°F)	97 mm (3.8 inches)	81%	very high
September Weather	21°C (70°F)	70 mm (2.8 inches)	80%	very high
October Weather	13°C (56°F)	127 mm (5.0 inches)	82%	high
November Weather	5°C (41°F)	60 mm (2.4 inches)	88%	moderate
December Weather	1°C (35°F)	55 mm (2.2 inches)	84%	low