May Weather in Winona, United States

Last updated: June 24, 2025

In May, the average temperature in Winona, United States is a delightful 23°C (73°F), with a range that can dip to a brisk 6°C (44°F) and rise to a sizzling 36°C (96°F). Expect about 114 mm (4.5 in) of precipitation spread over 11 days, contributing to an average humidity of 82% that adds a touch of moisture to the air!

May Temperature in Winona

In May in Winona, the average temperature is 23°C (73°F). Maximums can reach 36°C (96°F), while minimums can dip as low as 6°C (44°F). This range makes Winona an ideal destination for travelers seeking pleasant weather and diverse outdoor activities.

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

The chart illustrates May 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, May typically has an average temperature of 23°C (73°F), with highs reaching up to 36°C (96°F) and lows dropping to around 6°C (44°F).

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

May Precipitation in Winona

In Winona in May, the total precipitation amount is 114 mm (4.5 in) spread over 11 days.

May Precipitation Trends in Winona

The chart displays monthly precipitation patterns in Winona, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Winona, May typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Winona

In Winona in May, humidity is 82%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky embrace, making outdoor activities feel a bit more strenuous but offering a tropical ambiance perfect for leisurely strolls and relaxed sightseeing.

May Average Humidity in Winona

This chart illustrates the average monthly humidity levels in Winona, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Winona is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Winona

In Winona in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Winona.

Maximum UV Index Levels in Winona for May

The chart shows the monthly maximum UV Index (UVI) for Winona in May, 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 May, the maximum UV index in Winona typically reaches 11, which falls under the extreme exposure category.

Data source: Winona May 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 May 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 May’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 May’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