The highest day temperature in July 2025 was 98°F. The lowest night temperature was 60°F. The average values for day and night temperatures during July were 88.0°F и 71.3°F respectivly.

The average sea surface temperature in July 2025 for Mississauga was 70.8°F. The maximum and minimum values were 63.8°F and 77.8°F respectively.

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

Precipitation total in July for Mississauga is 1.2 in. It makes july the most rainy month of the year.

The average wind speed in July is 6.5 mph. It makes July the most windless month of the year for Mississauga.

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 Mississauga in July is 9.5 hours.