Mississauga, Ontario Weather by Month and Climate Averages

How much rain does Mississauga get?

Mississauga gets 832 mm of precipitation in an average year, spread over about 126 days with measurable rain. That is more rainy days than 55% of Canada.

April is the wettest month, with 89 mm. March is the driest, with 49 mm. October has the most rainy days, about 15.

The longest dry spell in the last five years lasted 224 days, to December 7, 2022.

Does it snow in Mississauga?

The snowiest winter on record is 2013–14, with 144 cm.

The most recent measurable snow at the station fell on April 20, 2021.

Mississauga weather by month

Mississauga weather in January

In January, Mississauga averages a high of -1°C and a low of -8°C. It gets 65 mm of precipitation over about 11 rainy days. The sun is out about 18% of daylight hours. The January record high is 16°C (2008) and the record low is -24°C (2014).

Mississauga weather in February

In February, Mississauga averages a high of 0°C and a low of -8°C. It gets 73 mm of precipitation over about 10 rainy days. The sun is out about 31% of daylight hours. The February record high is 18°C (2017) and the record low is -28°C (2015).

Mississauga weather in March

In March, Mississauga averages a high of 6°C and a low of -3°C. It gets 49 mm of precipitation over about 9 rainy days. The sun is out about 34% of daylight hours. The March record high is 26°C (2012) and the record low is -21°C (2007).

Mississauga weather in April

In April, Mississauga averages a high of 12°C and a low of 2°C. It gets 89 mm of precipitation over about 10 rainy days. The sun is out about 37% of daylight hours. The April record high is 31°C (2023) and the record low is -9°C (2016).

Mississauga weather in May

In May, Mississauga averages a high of 19°C and a low of 9°C. It gets 70 mm of precipitation over about 12 rainy days. The sun is out about 44% of daylight hours. The May record high is 33°C (2021) and the record low is -4°C (2020). May is one of the most comfortable months to visit.

Mississauga weather in June

In June, Mississauga averages a high of 25°C and a low of 14°C. It gets 78 mm of precipitation over about 11 rainy days. The sun is out about 48% of daylight hours. The June record high is 36°C (2022) and the record low is 6°C (2019). June is one of the most comfortable months to visit.

Mississauga weather in July

In July, Mississauga averages a high of 28°C and a low of 18°C. It gets 68 mm of precipitation over about 10 rainy days. The sun is out about 51% of daylight hours. The July record high is 38°C (2011) and the record low is 9°C (2010).

Mississauga weather in August

In August, Mississauga averages a high of 27°C and a low of 17°C. It gets 74 mm of precipitation over about 9 rainy days. The sun is out about 48% of daylight hours. The August record high is 36°C (2016) and the record low is 10°C (2017).

Mississauga weather in September

In September, Mississauga averages a high of 23°C and a low of 13°C. It gets 62 mm of precipitation over about 9 rainy days. The sun is out about 50% of daylight hours. The September record high is 36°C (2007) and the record low is 3°C (2020). September is one of the most comfortable months to visit.

Mississauga weather in October

In October, Mississauga averages a high of 16°C and a low of 7°C. It gets 82 mm of precipitation over about 15 rainy days. The sun is out about 39% of daylight hours. The October record high is 33°C (2019) and the record low is -4°C (2020).

Mississauga weather in November

In November, Mississauga averages a high of 8°C and a low of 1°C. It gets 56 mm of precipitation over about 10 rainy days. The sun is out about 38% of daylight hours. The November record high is 26°C (2022) and the record low is -14°C (2019).

Mississauga weather in December

In December, Mississauga averages a high of 2°C and a low of -4°C. It gets 66 mm of precipitation over about 11 rainy days. The sun is out about 20% of daylight hours. The December record high is 18°C (2021) and the record low is -25°C (2017).

Sunshine, humidity and wind in Mississauga

July is the sunniest month in Mississauga, with sunshine about 51% of daylight hours. January is the cloudiest, at 18%. Over the year the sun shines about 38% of daylight hours. Mississauga is sunnier than 68% of Canada.

Humidity peaks in January at 77% and is lowest in April at 66%.

Mississauga has about 10 days a year above 32°C. Mississauga is hotter than 90% of Canada.

First and last freeze in Mississauga

The first fall freeze in Mississauga typically comes around October 29, and the last spring freeze around April 26. That leaves a frost-free growing season of about 186 days.

Mississauga weather records

The hottest temperature on record at the Mississauga station is 38°C, on July 21, 2011. The coldest is -28°C, on February 16, 2015.

The wettest day on record brought 87 mm of rain, on April 15, 2018.

The best time to visit Mississauga

The most comfortable time to visit is typically May to June and September, when daytime highs sit near 22°C.

Winter (December–February) is cold, with average highs around 1°C and lows near -7°C. Snow is possible.

Spring (March–May) is chilly, with average highs around 12°C and lows near 3°C.

Summer (June–August) is warm, with average highs around 27°C and lows near 16°C. It can feel humid.

Autumn (September–November) is mild, with average highs around 16°C and lows near 7°C.

Mississauga climate questions

How much rain does Mississauga get?

Mississauga gets 832 mm of precipitation in an average year, over about 126 rainy days.

What is the wettest month in Mississauga?

April is the wettest month in Mississauga, with 89 mm. March is the driest, with 49 mm.

How many rainy days does Mississauga have a year?

Mississauga has about 126 days with measurable rain in an average year. October has the most, about 15.

What is the hottest month in Mississauga?

July is the warmest month in Mississauga, with an average high of 28°C.

What is the coldest month in Mississauga?

January is the coldest month in Mississauga, with an average low of -8°C.

What is the record high temperature in Mississauga?

The record high at the Mississauga station is 38°C, set on July 21, 2011. The record low is -28°C, on February 16, 2015.

What is the sunniest month in Mississauga?

July is the sunniest month in Mississauga, with sunshine about 51% of daylight hours. January is the cloudiest.

When is the first frost in Mississauga?

The first fall freeze in Mississauga typically comes around October 29. The last spring freeze is around April 26.

What is the best time to visit Mississauga?

The most comfortable time to visit is typically May to June and September, when daytime highs sit near 22°C.