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April Weather in Evanston, United States

Last updated: June 24, 2025

In April, the average temperature in Evanston, United States hovers around 3°C (38°F), with a minimum dipping to as low as -15°C (4°F) and a maximum reaching up to 21°C (71°F). Expect around 50 mm (2.0 in) of precipitation spread across approximately 10 days, while the humidity remains relatively high at 74%.

April Temperature in Evanston

In April in Evanston, the average temperature is 3°C (38°F). Maximum temperatures can reach 21°C (71°F), and minimums can plunge as low as -15°C (4°F). Be prepared for a wide range of temperatures while traveling, and pack accordingly to enjoy your visit!

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

The chart illustrates April 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, April typically has an average temperature of 3°C (38°F), with highs reaching up to 21°C (71°F) and lows dropping to around -15°C (4°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.

April Precipitation in Evanston

In Evanston in April, the precipitation amount is 50 mm (2.0 in) over a span of 10 days.

April Precipitation Trends in Evanston

The chart displays monthly precipitation patterns in Evanston, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Evanston, April typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec435256506121232127354342
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Evanston

In Evanston in April humidity is 74%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as you navigate through the foggy atmosphere.

April Average Humidity in Evanston

This chart illustrates the average monthly humidity levels in Evanston, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Evanston is approximately 74%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Evanston

In Evanston in April, 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 Evanston.

Maximum UV Index Levels in Evanston for April

The chart shows the monthly maximum UV Index (UVI) for Evanston in April, 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 April, the maximum UV index in Evanston typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469101112121110753
Data source: Evanston April 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 April 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 April’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 April’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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