January Weather in Winona, United States

Last updated: June 24, 2025

In January, the average temperature in Winona, United States hovers around 8°C (46°F), offering a cool climate. Temperatures can dip as low as -13°C (8°F) and soar up to 25°C (78°F), presenting a wide range of weather experiences. With 119 mm (4.7 in) of precipitation over 9 days, you'll encounter frequent showers, and an average humidity level of 85% adds to the moist atmosphere. Prepare accordingly for this dynamic month!

January Temperature in Winona

In January in Winona, the average temperature is 8°C (46°F). The maximum can reach 25°C (78°F), and the minimum can be as low as -13°C (8°F). Travelers should be prepared for a wide range of weather conditions, from mild days to chilly nights.

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 8°C (46°F), with highs reaching up to 25°C (78°F) and lows dropping to around -13°C (8°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 precipitation amount is 119 mm (4.7 in) occurring over a span of 9 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 119 mm (4.7 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 Winona

In Winona in January humidity is 85%. With an average temperature of 8°C (46°F), this humidity feels like a cold, damp embrace that can leave travelers feeling chilled and uncomfortable, making outdoor exploration less appealing and encouraging the search for cozy indoor activities instead.

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 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 Winona

In Winona in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Winona for better planning.

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 4, 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	8°C (46°F)	119 mm (4.7 inches)	85%	moderate
February Weather	10°C (51°F)	183 mm (7.2 inches)	84%	high
March Weather	15°C (59°F)	162 mm (6.4 inches)	82%	very high
April Weather	17°C (63°F)	151 mm (5.9 inches)	82%	very high
May Weather	23°C (73°F)	114 mm (4.5 inches)	82%	extreme
June Weather	26°C (79°F)	127 mm (5.0 inches)	79%	extreme
July Weather	28°C (82°F)	94 mm (3.7 inches)	82%	extreme
August Weather	27°C (81°F)	120 mm (4.7 inches)	77%	extreme
September Weather	25°C (78°F)	93 mm (3.7 inches)	74%	very high
October Weather	19°C (67°F)	126 mm (5.0 inches)	73%	very high
November Weather	12°C (53°F)	80 mm (3.1 inches)	85%	high
December Weather	10°C (50°F)	125 mm (4.9 inches)	88%	moderate