Kingston, Ontario Weather by Month and Climate Averages

How much rain does Kingston get?

Kingston gets 833 mm of precipitation in an average year, spread over about 143 days with measurable rain. That is more rainy days than 66% of Canada.

October is the wettest month, with 100 mm. February is the driest, with 51 mm. October has the most rainy days, about 15.

The longest dry spell in the last five years lasted 17 days, to October 5, 2023.

Kingston weather by month

Kingston weather in January

In January, Kingston averages a high of -2°C and a low of -11°C. It gets 53 mm of precipitation over about 14 rainy days. The sun is out about 27% of daylight hours. The January record high is 11°C (2020) and the record low is -33°C (2018).

Kingston weather in February

In February, Kingston averages a high of -1°C and a low of -11°C. It gets 51 mm of precipitation over about 14 rainy days. The sun is out about 32% of daylight hours. The February record high is 13°C (2017) and the record low is -32°C (2023).

Kingston weather in March

In March, Kingston averages a high of 4°C and a low of -5°C. It gets 53 mm of precipitation over about 13 rainy days. The sun is out about 34% of daylight hours. The March record high is 21°C (2012) and the record low is -24°C (2015).

Kingston weather in April

In April, Kingston averages a high of 11°C and a low of 1°C. It gets 85 mm of precipitation over about 13 rainy days. The sun is out about 36% of daylight hours. The April record high is 27°C (2023) and the record low is -9°C (2016).

Kingston weather in May

In May, Kingston averages a high of 18°C and a low of 7°C. It gets 71 mm of precipitation over about 11 rainy days. The sun is out about 44% of daylight hours. The May record high is 32°C (2010) and the record low is -4°C (2020). May is one of the most comfortable months to visit.

Kingston weather in June

In June, Kingston averages a high of 22°C and a low of 12°C. It gets 92 mm of precipitation over about 11 rainy days. The sun is out about 44% of daylight hours. The June record high is 31°C (2023) and the record low is 3°C (2020). June is one of the most comfortable months to visit.

Kingston weather in July

In July, Kingston averages a high of 26°C and a low of 16°C. It gets 67 mm of precipitation over about 9 rainy days. The sun is out about 48% of daylight hours. The July record high is 34°C (2012) and the record low is 8°C (2015). July is one of the most comfortable months to visit.

Kingston weather in August

In August, Kingston averages a high of 25°C and a low of 15°C. It gets 73 mm of precipitation over about 10 rainy days. The sun is out about 45% of daylight hours. The August record high is 32°C (2012) and the record low is 7°C (2009). August is one of the most comfortable months to visit.

Kingston weather in September

In September, Kingston averages a high of 21°C and a low of 11°C. It gets 62 mm of precipitation over about 8 rainy days. The sun is out about 46% of daylight hours. The September record high is 31°C (2018) and the record low is -1°C (2014). September is one of the most comfortable months to visit.

Kingston weather in October

In October, Kingston averages a high of 14°C and a low of 5°C. It gets 100 mm of precipitation over about 15 rainy days. The sun is out about 39% of daylight hours. The October record high is 26°C (2019) and the record low is -8°C (2020).

Kingston weather in November

In November, Kingston averages a high of 8°C and a low of -1°C. It gets 56 mm of precipitation over about 12 rainy days. The sun is out about 38% of daylight hours. The November record high is 19°C (2008) and the record low is -17°C (2013).

Kingston weather in December

In December, Kingston averages a high of 1°C and a low of -6°C. It gets 69 mm of precipitation over about 14 rainy days. The sun is out about 23% of daylight hours. The December record high is 14°C (2015) and the record low is -27°C (2017).

Sunshine, humidity and wind in Kingston

July is the sunniest month in Kingston, with sunshine about 48% of daylight hours. December is the cloudiest, at 23%. Over the year the sun shines about 38% of daylight hours. Kingston is sunnier than 66% of Canada.

Humidity peaks in December at 80% and is lowest in April at 69%.

First and last freeze in Kingston

The first fall freeze in Kingston typically comes around October 11, and the last spring freeze around May 1. That leaves a frost-free growing season of about 163 days.

Kingston weather records

The hottest temperature on record at the Kingston station is 34°C, on July 17, 2012. The coldest is -33°C, on January 1, 2018.

The wettest day on record brought 92 mm of rain, on July 24, 2017.

The best time to visit Kingston

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

Winter (December–February) is cold, with average highs around -1°C and lows near -9°C.

Spring (March–May) is chilly, with average highs around 11°C and lows near 1°C.

Summer (June–August) is warm, with average highs around 24°C and lows near 15°C. It can feel humid.

Autumn (September–November) is mild, with average highs around 14°C and lows near 5°C.

Kingston climate questions

How much rain does Kingston get?

Kingston gets 833 mm of precipitation in an average year, over about 143 rainy days.

What is the wettest month in Kingston?

October is the wettest month in Kingston, with 100 mm. February is the driest, with 51 mm.

How many rainy days does Kingston have a year?

Kingston has about 143 days with measurable rain in an average year. October has the most, about 15.

What is the hottest month in Kingston?

July is the warmest month in Kingston, with an average high of 26°C.

What is the coldest month in Kingston?

January is the coldest month in Kingston, with an average low of -11°C.

What is the record high temperature in Kingston?

The record high at the Kingston station is 34°C, set on July 17, 2012. The record low is -33°C, on January 1, 2018.

What is the sunniest month in Kingston?

July is the sunniest month in Kingston, with sunshine about 48% of daylight hours. December is the cloudiest.

When is the first frost in Kingston?

The first fall freeze in Kingston typically comes around October 11. The last spring freeze is around May 1.

What is the best time to visit Kingston?

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