September Weather in Winona

Last updated: March 2, 2024

The weather in Winona, United States, during September is characterized by an average temperature of 26°C (79°F). Highs can soar to 37°C (99°F), while lows may dip to 14°C (57°F). Typically, the humidity level in Winona throughout September hovers around 65%.

14°C (57°F)

Minimum temperature

26°C (79°F)

Average temperature

37°C (99°F)

Maximum temperature

65%

Humidity

Precipitation and Sunshine hours

In September, Winona averages 98 mm (3.9 inches) of rainfall, typically over the course of 9 rainy days. The month enjoys an average of 12 hours 19 minutes of daylight, with the sun shining for approximately 9 hours 22 minutes each day. Additionally, there is a 59% probability of sunny days during this period.

98 mm (3.9 inches)

Precipitation

9 rainy days

Rainy days

9 hours 22 minutes

Sunshine hours

59%

Chance of sun

UV Index

In September, the UV Index in Winona reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 1 2 4 7 9 10 9 8 5 3 1 1
Exposure Low Moderate High VeryHigh Moderate Low
Time to burn 45 min 30 min 25 min 15 min 30 min 45 min

Compare Winona's Climate with Cities Worldwide