Markham, Ontario Weather by Month and Climate Averages

How much rain does Markham get?

Markham gets 882 mm of precipitation in an average year, spread over about 153 days with measurable rain. That is more rainy days than 74% of Canada.

June is the wettest month, with 96 mm. March is the driest, with 54 mm. January has the most rainy days, about 16.

The longest dry spell in the last five years lasted 14 days, to June 7, 2023.

Does it snow in Markham?

The snowiest winter on record is 2007–08, with 233 cm.

The most recent measurable snow at the station fell on March 22, 2024.

Markham weather by month

Markham weather in January

In January, Markham averages a high of -1°C and a low of -8°C. It gets 66 mm of precipitation over about 16 rainy days. The sun is out about 18% of daylight hours. The January record high is 16°C (2005) and the record low is -26°C (1999).

Markham weather in February

In February, Markham averages a high of 0°C and a low of -8°C. It gets 56 mm of precipitation over about 13 rainy days. The sun is out about 31% of daylight hours. The February record high is 17°C (2018) and the record low is -27°C (2016).

Markham weather in March

In March, Markham averages a high of 5°C and a low of -4°C. It gets 54 mm of precipitation over about 12 rainy days. The sun is out about 34% of daylight hours. The March record high is 28°C (2012) and the record low is -26°C (2003).

Markham weather in April

In April, Markham averages a high of 12°C and a low of 2°C. It gets 80 mm of precipitation over about 13 rainy days. The sun is out about 37% of daylight hours. The April record high is 30°C (2023) and the record low is -12°C (2016).

Markham weather in May

In May, Markham averages a high of 19°C and a low of 8°C. It gets 83 mm of precipitation over about 13 rainy days. The sun is out about 44% of daylight hours. The May record high is 34°C (2006) and the record low is -4°C (2020). May is one of the most comfortable months to visit.

Markham weather in June

In June, Markham averages a high of 25°C and a low of 13°C. It gets 96 mm of precipitation over about 12 rainy days. The sun is out about 47% of daylight hours. The June record high is 36°C (2018) and the record low is 2°C (2009).

Markham weather in July

In July, Markham averages a high of 28°C and a low of 16°C. It gets 84 mm of precipitation over about 11 rainy days. The sun is out about 51% of daylight hours. The July record high is 37°C (2011) and the record low is 7°C (1997).

Markham weather in August

In August, Markham averages a high of 27°C and a low of 16°C. It gets 77 mm of precipitation over about 11 rainy days. The sun is out about 49% of daylight hours. The August record high is 38°C (2001) and the record low is 6°C (2000). August is one of the most comfortable months to visit.

Markham weather in September

In September, Markham averages a high of 23°C and a low of 12°C. It gets 77 mm of precipitation over about 10 rainy days. The sun is out about 51% of daylight hours. The September record high is 35°C (2015) and the record low is -1°C (2000). September is one of the most comfortable months to visit.

Markham weather in October

In October, Markham averages a high of 15°C and a low of 6°C. It gets 73 mm of precipitation over about 14 rainy days. The sun is out about 40% of daylight hours. The October record high is 32°C (2007) and the record low is -8°C (2020).

Markham weather in November

In November, Markham averages a high of 8°C and a low of 0°C. It gets 70 mm of precipitation over about 13 rainy days. The sun is out about 38% of daylight hours. The November record high is 24°C (2020) and the record low is -17°C (2019).

Markham weather in December

In December, Markham averages a high of 2°C and a low of -5°C. It gets 66 mm of precipitation over about 15 rainy days. The sun is out about 20% of daylight hours. The December record high is 18°C (2001) and the record low is -26°C (2004).

Sunshine, humidity and wind in Markham

July is the sunniest month in Markham, with sunshine about 51% of daylight hours. January is the cloudiest, at 18%. Over the year the sun shines about 38% of daylight hours. Markham is sunnier than 70% of Canada.

Humidity peaks in January at 77% and is lowest in February at 72%.

Markham has about 9 days a year above 32°C. Markham is hotter than 87% of Canada.

First and last freeze in Markham

The first fall freeze in Markham typically comes around October 13, and the last spring freeze around May 4. That leaves a frost-free growing season of about 162 days.

Markham weather records

The hottest temperature on record at the Markham station is 38°C, on August 8, 2001. The coldest is -27°C, on February 15, 2015.

The wettest day on record brought 141 mm of rain, on August 19, 2005.

40 all-time records have been set at the station since 1994.

The best time to visit Markham

The most comfortable time to visit is typically May and August to September, when daytime highs sit near 23°C.

Winter (December–February) is cold, with average highs around 0°C and lows near -7°C. Snow is possible.

Spring (March–May) is chilly, with average highs around 12°C and lows near 2°C.

Summer (June–August) is warm, with average highs around 26°C and lows near 15°C. It can feel humid.

Autumn (September–November) is mild, with average highs around 15°C and lows near 6°C.

Markham climate questions

How much rain does Markham get?

Markham gets 882 mm of precipitation in an average year, over about 153 rainy days.

What is the wettest month in Markham?

June is the wettest month in Markham, with 96 mm. March is the driest, with 54 mm.

How many rainy days does Markham have a year?

Markham has about 153 days with measurable rain in an average year. January has the most, about 16.

What is the hottest month in Markham?

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

What is the coldest month in Markham?

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

What is the record high temperature in Markham?

The record high at the Markham station is 38°C, set on August 8, 2001. The record low is -27°C, on February 15, 2015.

What is the sunniest month in Markham?

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

When is the first frost in Markham?

The first fall freeze in Markham typically comes around October 13. The last spring freeze is around May 4.

What is the best time to visit Markham?

The most comfortable time to visit is typically May and August to September, when daytime highs sit near 23°C.