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 2010-02-08 17:00:00
 | -2°C Mainly Sunny |
| Feels Like | -9 | Wind | WNW 26 km/ |
| Humidity | 58 % | Pressure | 102.1 kPa falling |
| Dew Point | -9.1°C | Visibility | 24.1 km |
| Air Quality | | Temperature | -1.9°C |
Short Term Forecast
| | Monday Night | Tuesday | Tuesday Night | Wednesday | Thursday |
| |  |  |  |  |  |
| | A Few Clouds | Increasing Clouds | Periods Of Snow | Snow | Chance Of Flurries |
| Low | -12°C | | -7°C | | -9°C |
| High | | -5°C | | -4°C | -4°C |
Detailed Mississauga Weather Forecast
| Monday Night | Clear. Becoming cloudy periods after midnight. Wind northwest 20 km/h becoming light early this evening. Low minus 12. Forecast issued 3:30 PM EST Monday 08 February 2010 |
| Tuesday | Increasing cloudiness in the morning. High minus 5. Forecast issued 3:30 PM EST Monday 08 February 2010 |
| Tuesday Night | Cloudy. Periods of snow beginning in the evening. Amount 2 to 4 cm. Wind northeast 30 km/h becoming light after midnight. Low minus 7. Forecast issued 3:30 PM EST Monday 08 February 2010 |
| Wednesday | Snow. High minus 4. Forecast issued 3:30 PM EST Monday 08 February 2010 |
| Thursday | Cloudy with 60 percent chance of flurries. Low minus 9. High minus 4. Forecast issued 3:30 PM EST Monday 08 February 2010 |
| Friday | A mix of sun and cloud. Low minus 9. High minus 2. Forecast issued 3:30 PM EST Monday 08 February 2010 |
| Saturday | A mix of sun and cloud. Low minus 11. High minus 1. Forecast issued 3:30 PM EST Monday 08 February 2010 |
| Sunday | A mix of sun and cloud. Low minus 10. High zero. Forecast issued 3:30 PM EST Monday 08 February 2010 |