nomadseason

August Weather in Winona, United States

Last updated: June 24, 2025

In August, the average temperature in Winona, United States hovers around 27°C (81°F), creating a warm atmosphere perfect for outdoor activities. With minimum temperatures dipping to 17°C (62°F) and maximums soaring to 37°C (98°F), there's a wide range of warmth to enjoy. However, expect 120 mm (4.7 in) of precipitation over 15 days, bringing a touch of moisture to the air and an average humidity level of 77%.

August Temperature in Winona

In August in Winona, the average temperature is 27°C (81°F). The maximum can reach 37°C (98°F) and the minimum can be as low as 17°C (62°F). This climate makes Winona an ideal destination for travelers seeking warm weather and outdoor activities.

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 27°C (81°F), with highs reaching up to 37°C (98°F) and lows dropping to around 17°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec465159637379828177675350
Data source: Temperature data for Winona generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Winona

In Winona in August, the precipitation amount is 120 mm (4.7 in) spread over 15 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 120 mm (4.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec119183162151114127951209312680125
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

August Humidity in Winona

In Winona in August, humidity is 77%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket, making travel feel sticky and heavy, as sweat clings to the skin and the air becomes thick, causing you to long for refreshing breezes and cool shade.

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 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%82%79%82%77%74%73%85%88%
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 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 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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119864
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.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)119 mm (4.7 inches)85%moderate
February Weather10°C (51°F)183 mm (7.2 inches)84%high
March Weather15°C (59°F)162 mm (6.4 inches)82%very high
April Weather17°C (63°F)151 mm (5.9 inches)82%very high
May Weather23°C (73°F)114 mm (4.5 inches)82%extreme
June Weather26°C (79°F)127 mm (5.0 inches)79%extreme
July Weather28°C (82°F)94 mm (3.7 inches)82%extreme
August Weather27°C (81°F)120 mm (4.7 inches)77%extreme
September Weather25°C (78°F)93 mm (3.7 inches)74%very high
October Weather19°C (67°F)126 mm (5.0 inches)73%very high
November Weather12°C (53°F)80 mm (3.1 inches)85%high
December Weather10°C (50°F)125 mm (4.9 inches)88%moderate

Compare Winona's Climate with Cities Worldwide