August Weather in Winona, United States

Last updated: June 24, 2025

In August, the average temperature in Winona, United States hovers around 25°C (77°F), offering a pleasant climate for outdoor activities. However, temperatures can vary significantly, with a minimum of 14°C (57°F) and a maximum soaring up to 36°C (97°F). Visitors should also prepare for occasional rainfall, with an average precipitation of 104 mm (4.1 in) spread over 12 days. The humidity level is typically around 69%, adding a touch of warmth to the air. Enjoy your stay in this vibrant locale!

August Temperature in Winona

In August in Winona, the average temperature is 25°C (77°F), with maximums reaching 36°C (97°F) and minimums dropping to as low as 14°C (57°F). It's a great time to visit for those who enjoy warm weather with occasional cooler evenings.

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

The chart illustrates August 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, August typically has an average temperature of 25°C (77°F), with highs reaching up to 36°C (97°F) and lows dropping to around 14°C (57°F).

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

August Precipitation in Winona

In Winona in August, the total precipitation amount is 104 mm (4.1 in) spread over 12 days.

August Precipitation Trends in Winona

The chart displays monthly precipitation patterns in Winona, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Winona, August typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Winona

In Winona in August humidity is 69%. With an average temperature of 25°C (77°F), this humidity feels like a warm, heavy blanket enveloping you, making every step feel slightly sluggish and encouraging frequent breaks to enjoy refreshing beverages and cool breezes.

August Average Humidity in Winona

This chart illustrates the average monthly humidity levels in Winona, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Winona is approximately 69%, offering insight into how humid the weather typically is during this month.

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

August UV Index in Winona

In Winona in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Winona.

Maximum UV Index Levels in Winona for August

The chart shows the monthly maximum UV Index (UVI) for Winona in August, 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 August, the maximum UV index in Winona typically reaches 10, which falls under the very high exposure category.

Data source: Winona August 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 August 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 August’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 August’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