The highest day temperature in April 2026 was 73°F. The lowest night temperature was 31°F. The average values for day and night temperatures during April were 54.3°F и 47.1°F respectivly.

The average sea surface temperature in April 2026 for Chicago was 43.2°F. The maximum and minimum values were 37.6°F and 52.2°F respectively.

You can expect various weather conditions during April. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in April for Chicago is 2.5 in. It makes april one of the most rainy months of the year.

The average wind speed in April is 11.5 mph. It makes April one of the most windy months of the year for Chicago.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Chicago in April is 6.7 hours.