The highest day temperature in July 2025 was 97°F. The lowest night temperature was 68°F. The average values for day and night temperatures during July were 84.2°F и 74.4°F respectivly.

The average sea surface temperature in July 2025 for Evanston was 75.5°F. The maximum and minimum values were 72.6°F and 80.0°F respectively.

Most of the days in July are sunny but you can also expect cloudy and gloomy days.

Precipitation total in July for Evanston is 1.2 in. It makes july one of the most rainy months of the year.

The average wind speed in July is 7.1 mph. It makes July the most windless month of the year for Evanston.

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 Evanston in July is 9.2 hours.