January Weather in Winona, United States

Last updated: June 24, 2025

In January, the average temperature in Winona, United States hovers around 2°C (36°F). While you might experience a chilling minimum of -17°C (2°F), be prepared for occasional warmth with highs reaching up to 21°C (70°F). Rainfall is typical, with about 82 mm (3.2 in) spread over 8 days, and the air remains quite humid with an average of 83%.

January Temperature in Winona

In January in Winona, the weather can be quite variable, making it a good time to pack layers for your trip.

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

The chart illustrates January temperature patterns in Winona, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Winona, January typically has an average temperature of 2°C (36°F), with highs reaching up to 21°C (70°F) and lows dropping to around -17°C (2°F).

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

January Precipitation in Winona

In Winona in January, the total precipitation amount reached 82 mm (3.2 in) over the course of 8 days.

January Precipitation Trends in Winona

The chart displays monthly precipitation patterns in Winona, 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 Winona, January typically receives around 82 mm (3.2 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 Winona

In Winona in January, humidity is 83%. With an average temperature of 2°C (36°F), this humidity feels like a cold, damp blanket, making travel uncomfortable as the chill seeps into your bones and the moisture clings to your clothing, forcing you to constantly seek warmth and shelter.

January Average Humidity in Winona

This chart illustrates the average monthly humidity levels in Winona, 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 Winona is approximately 83%, 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 Winona

In Winona 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 Winona, you can check the information here.

Maximum UV Index Levels in Winona for January

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

Data source: Winona 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 Winona Compares to Other Months

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

This table compares monthly weather conditions in Winona, 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 (36°F)	82 mm (3.2 inches)	83%	moderate
February Weather	4°C (39°F)	107 mm (4.2 inches)	81%	high
March Weather	10°C (50°F)	150 mm (5.9 inches)	80%	high
April Weather	13°C (56°F)	160 mm (6.3 inches)	80%	very high
May Weather	19°C (67°F)	180 mm (7.1 inches)	83%	very high
June Weather	24°C (75°F)	87 mm (3.4 inches)	83%	extreme
July Weather	26°C (80°F)	86 mm (3.4 inches)	76%	extreme
August Weather	25°C (77°F)	104 mm (4.1 inches)	69%	very high
September Weather	23°C (73°F)	58 mm (2.3 inches)	68%	very high
October Weather	15°C (60°F)	121 mm (4.8 inches)	72%	high
November Weather	8°C (46°F)	76 mm (3.0 inches)	83%	moderate
December Weather	5°C (42°F)	76 mm (3.0 inches)	86%	moderate