January Weather in Plainfield, United States

Last updated: June 24, 2025

In January, the average temperature in Plainfield, United States is a chilly -7°C (19°F), with extremes reaching as low as -32°C (-26°F) and peaking at 8°C (47°F). Expect 39 mm (1.5 in) of precipitation spread over 7 days, accompanied by high humidity levels averaging 89%. Stay warm and prepared for a wintery atmosphere!

January Temperature in Plainfield

In January in Plainfield, the average temperature is -7°C (19°F), with maximums reaching 8°C (47°F) and minimums dropping as low as -32°C (-26°F). Travelers should be prepared for extremely cold conditions and dress warmly to enjoy their visit.

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

The chart illustrates January temperature patterns in Plainfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Plainfield, January typically has an average temperature of -7°C (19°F), with highs reaching up to 8°C (47°F) and lows dropping to around -32°C (-26°F).

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

January Precipitation in Plainfield

In Plainfield in January, the precipitation amount is 39 mm (1.5 in) over the course of 7 days.

January Precipitation Trends in Plainfield

The chart displays monthly precipitation patterns in Plainfield, 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 Plainfield, January typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 7 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 Plainfield

In Plainfield in January humidity is 89%. With an average temperature of -7°C (19°F), this humidity feels like an icy mist clinging to your skin, making travel uncomfortable as each breath brings in a sharp chill that bites through layers of clothing.

January Average Humidity in Plainfield

This chart illustrates the average monthly humidity levels in Plainfield, 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 Plainfield is approximately 89%, 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 Plainfield

In Plainfield in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Plainfield, you can visit Hourly UV Index in Plainfield.

Maximum UV Index Levels in Plainfield for January

The chart shows the monthly maximum UV Index (UVI) for Plainfield 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 Plainfield typically reaches 2, which falls under the low exposure category.

Data source: Plainfield 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 Plainfield Compares to Other Months

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

This table compares monthly weather conditions in Plainfield, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (19°F)	39 mm (1.5 inches)	89%	low
February Weather	-7°C (20°F)	52 mm (2.0 inches)	90%	moderate
March Weather	1°C (33°F)	62 mm (2.4 inches)	87%	moderate
April Weather	6°C (43°F)	99 mm (3.9 inches)	84%	very high
May Weather	14°C (58°F)	111 mm (4.4 inches)	77%	very high
June Weather	20°C (69°F)	109 mm (4.3 inches)	75%	very high
July Weather	23°C (73°F)	121 mm (4.7 inches)	74%	very high
August Weather	21°C (69°F)	128 mm (5.0 inches)	73%	very high
September Weather	17°C (63°F)	105 mm (4.1 inches)	78%	high
October Weather	9°C (49°F)	107 mm (4.2 inches)	84%	moderate
November Weather	1°C (34°F)	51 mm (2.0 inches)	89%	moderate
December Weather	-4°C (26°F)	50 mm (2.0 inches)	87%	low