Mississauga's climate is considered moderate. The summer months can bring high temperatures sometimes accompanied by high humidity levels. The average temperature in July and August is a nice 70 F; but the temperature can soar to 86 F and above and when paired with the high humidity level can make the temperature appear even warmer.
Winters in Mississauga are cold, with temperatures most often below the freezing mark. The average temperature in January and February is 21 F. Colder periods with temperatures as low as -4 F in these months are not uncommon.
On the same token, brief periods of warmer temperatures also occur on occasion throughout the winter season. The snowfall in Mississauga is relatively low compared with the rest of the province and the rest of Canada.
Current Mississauga Weather
Observed at Toronto Pearson Int'l Airport on 2010-07-29 17:00:00
 | 24°C Mostly Cloudy |
| Feels Like | | Wind | NNW 9 km/h |
| Humidity | 50 % | Pressure | 101.6 kPa falling |
| Dew Point | 12.6°C | Visibility | 24.1 km |
| Air Quality | 3 - Low Health Risk | Temperature | 23.6°C |
Short Term Forecast
| | Thursday Night | Friday | Friday Night | Saturday | Sunday |
| |  |  |  |  |  |
| | A Few Clouds | A Mix Of Sun And Cloud | A Few Clouds | Chance Of Showers | Cloudy |
| Low | 13°C | | 13°C | | 17°C |
| High | | 23°C | | 25°C | 25°C |
Detailed Mississauga Weather Forecast
| Thursday Night | A few clouds. Low 13. Forecast issued 3:30 PM EDT Thursday 29 July 2010 |
| Friday | Increasing cloudiness. High 23. UV index 7 or high. Forecast issued 3:30 PM EDT Thursday 29 July 2010 |
| Friday Night | Clearing late in the evening. Low 13. Forecast issued 3:30 PM EDT Thursday 29 July 2010 |
| Saturday | Cloudy with 30 percent chance of showers. High 25. Forecast issued 3:30 PM EDT Thursday 29 July 2010 |
| Sunday | Cloudy. Low 17. High 25. Forecast issued 3:30 PM EDT Thursday 29 July 2010 |
| Monday | Sunny. Low 13. High 26. Forecast issued 3:30 PM EDT Thursday 29 July 2010 |
| Tuesday | Cloudy with 60 percent chance of showers. Low 18. High 28. Forecast issued 3:30 PM EDT Thursday 29 July 2010 |
| Wednesday | Cloudy with 60 percent chance of showers. Low 20. High 28. Forecast issued 3:30 PM EDT Thursday 29 July 2010 |