January Weather in Windsor, United States

Last updated: June 24, 2025

In Windsor, United States, the average temperature for January hovers around -6°C (21°F). While it can drop to a chilling -29°C (-21°F), warmer days can reach up to 15°C (60°F). Expect 72 mm (2.8 in) of precipitation spread across 9 days, with an average humidity level of 89% that adds to the winter chill.

January Temperature in Windsor

In January in Windsor, the average temperature is -6°C (21°F). Maximum temperatures can reach 15°C (60°F), while minimums can dip as low as -29°C (-21°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both cold and milder conditions.

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

The chart illustrates January temperature patterns in Windsor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Windsor, January typically has an average temperature of -6°C (21°F), with highs reaching up to 15°C (60°F) and lows dropping to around -29°C (-21°F).

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

January Precipitation in Windsor

In Windsor in January, the precipitation amount is 72 mm (2.8 in) over the course of 9 days.

January Precipitation Trends in Windsor

The chart displays monthly precipitation patterns in Windsor, 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 Windsor, January typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 9 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 Windsor

In Windsor in January, humidity is 89%. With an average temperature of -6°C (21°F), this humidity feels like an uncomfortable chill that seeps into your bones, making traveling outdoors an arduous task as the cold air mixes with dampness, often leaving you feeling cold and clammy despite layers of clothing.

January Average Humidity in Windsor

This chart illustrates the average monthly humidity levels in Windsor, 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 Windsor 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 Windsor

In Windsor 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 Windsor, you can check the information here.

Maximum UV Index Levels in Windsor for January

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

Data source: Windsor 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 Windsor Compares to Other Months

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

This table compares monthly weather conditions in Windsor, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	72 mm (2.8 inches)	89%	moderate
February Weather	-4°C (24°F)	83 mm (3.3 inches)	88%	moderate
March Weather	-1°C (31°F)	71 mm (2.8 inches)	86%	high
April Weather	6°C (44°F)	117 mm (4.6 inches)	84%	very high
May Weather	13°C (56°F)	84 mm (3.3 inches)	76%	very high
June Weather	18°C (65°F)	95 mm (3.8 inches)	72%	very high
July Weather	21°C (70°F)	135 mm (5.3 inches)	66%	very high
August Weather	20°C (68°F)	93 mm (3.7 inches)	64%	very high
September Weather	16°C (61°F)	72 mm (2.8 inches)	72%	high
October Weather	10°C (50°F)	141 mm (5.5 inches)	81%	moderate
November Weather	2°C (35°F)	100 mm (3.9 inches)	87%	moderate
December Weather	-3°C (26°F)	98 mm (3.9 inches)	84%	low