September Weather in Evanston

Last updated: March 2, 2024

The weather in Evanston, United States, during September is characterized by an average temperature of 14°C (58°F). Highs can soar to 30°C (87°F), while lows may dip to -3°C (27°F). Typically, the humidity level in Evanston throughout September hovers around 46%.

-3°C (27°F)

Minimum temperature

14°C (58°F)

Average temperature

30°C (87°F)

Maximum temperature

46%

Humidity

Precipitation and Sunshine hours

In September, Evanston averages 27 mm (1.0 inches) of rainfall, typically over the course of 6 rainy days. The month enjoys an average of 12 hours 24 minutes of daylight, with the sun shining for approximately 10 hours 17 minutes each day. Additionally, there is a 76% probability of sunny days during this period.

27 mm (1.0 inches)

Precipitation

6 rainy days

Rainy days

10 hours 17 minutes

Sunshine hours

76%

Chance of sun

UV Index

In September, the UV Index in Evanston 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 6 8 9 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

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