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May Weather in Evanston, United States

Last updated: June 24, 2025

In May, the average temperature in Evanston, United States hovers around 9°C (48°F). Temperatures can range from a brisk -9°C (16°F) to a warm 27°C (81°F). Expect about 61 mm (2.4 in) of precipitation spread over 13 days, contributing to an average humidity of 62%. Embrace the diverse weather this month has to offer!

May Temperature in Evanston

In May in Evanston, the average temperature is 9°C (48°F), with maximums reaching 27°C (81°F) and minimums dipping as low as -9°C (16°F). It's advisable to pack layers to accommodate the wide temperature range while traveling.

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

The chart illustrates May temperature patterns in Evanston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Evanston, May typically has an average temperature of 9°C (48°F), with highs reaching up to 27°C (81°F) and lows dropping to around -9°C (16°F).
JanFebMarAprMayJunJulAugSepOctNovDec222331384861706758413222
Data source: Temperature data for Evanston generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Evanston

In Evanston in May, the precipitation amount is 61 mm (2.4 in) occurring over the course of 13 days.

May Precipitation Trends in Evanston

The chart displays monthly precipitation patterns in Evanston, 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 Evanston, May typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec435256506121232127354342
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Evanston

In Evanston in May, humidity is 62%. With an average temperature of 9°C (48°F), this humidity feels like a chilly embrace, making travel somewhat uncomfortable as it clings to your skin, prompting a need for layered clothing to stay warm while exploring the sights.

May Average Humidity in Evanston

This chart illustrates the average monthly humidity levels in Evanston, 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 Evanston is approximately 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%92%84%75%62%56%44%37%46%67%84%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Evanston

In Evanston 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 Evanston.

Maximum UV Index Levels in Evanston for May

The chart shows the monthly maximum UV Index (UVI) for Evanston 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 Evanston typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469101112121110753
Data source: Evanston 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 Evanston Compares to Other Months

Weather in Evanston varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Evanston, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Evanston, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)43 mm (1.7 inches)91%moderate
February Weather-5°C (24°F)52 mm (2.1 inches)92%high
March Weather0°C (32°F)55 mm (2.2 inches)84%very high
April Weather3°C (38°F)50 mm (2.0 inches)74%very high
May Weather9°C (48°F)61 mm (2.4 inches)62%extreme
June Weather16°C (61°F)21 mm (0.8 inches)56%extreme
July Weather21°C (70°F)23 mm (0.9 inches)44%extreme
August Weather19°C (67°F)21 mm (0.8 inches)37%extreme
September Weather14°C (58°F)27 mm (1.0 inches)46%very high
October Weather5°C (41°F)35 mm (1.4 inches)67%high
November Weather0°C (33°F)43 mm (1.7 inches)84%moderate
December Weather-5°C (23°F)42 mm (1.7 inches)88%moderate

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