Hyperlocal rainfall totals + real-time NOAA forecasts
Accurate weather without the clutter
Kingston, Ontario Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Kingston, Ontario?
Kingston, Ontario gets 942 mm of precipitation a year over about 158 rainy days. July is the warmest month (average high 27°C) and January the coldest (average low -12°C).
Humid continental climate
Kingston, Ontario has warm summers and cold winters. Daytime highs range from about -1°C in January to 26°C in July. October is usually the wettest month, and snow falls in winter. The most comfortable time to visit is typically May to September, when daytime highs sit near 23°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | -10° | 1° |
| Spring | Mar–May | 0° | 12° |
| Summer | Jun–Aug | 13° | 26° |
| Autumn | Sep–Nov | 4° | 15° |
How much rain does Kingston get?
Kingston gets 942 mm of precipitation in an average year, spread over about 158 days with measurable rain. That is more rainy days than 96% of the US.
October is the wettest month, with 107 mm. February is the driest, with 55 mm. January has the most rainy days, about 16.
The longest dry spell in the last five years lasted 16 days, to October 5, 2023.
From October 2025 to September 2026 Kingston got 1286 mm of rain, against a normal of 942 mm for those months. April 2026 had the most, with 153 mm.
Does it snow in Kingston?
The snowiest winter on record is 1983–84, with 419 cm.
The most recent measurable snow at the station fell on April 7, 2026.
From October 2025 to September 2026 the station measured 134 cm of snow. January 2026 had the most, with 70 cm.
Kingston weather by month
Kingston weather in January
In January, Kingston averages a high of -1°C and a low of -12°C. It gets 73 mm of precipitation over about 16 rainy days. Estimated sunshine is 27% of daylight hours, derived from ERA5 cloud cover. The January record high is 19°C (1995) and the record low is -42°C (1994).
Kingston weather in February
In February, Kingston averages a high of 0°C and a low of -12°C. It gets 55 mm of precipitation over about 14 rainy days. Estimated sunshine is 32% of daylight hours, derived from ERA5 cloud cover. The February record high is 21°C (2024) and the record low is -38°C (2016).
Kingston weather in March
In March, Kingston averages a high of 4°C and a low of -6°C. It gets 60 mm of precipitation over about 13 rainy days. Estimated sunshine is 34% of daylight hours, derived from ERA5 cloud cover. The March record high is 29°C (1977) and the record low is -31°C (1984).
Kingston weather in April
In April, Kingston averages a high of 12°C and a low of 1°C. It gets 78 mm of precipitation over about 13 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The April record high is 32°C (1990) and the record low is -13°C (1982).
Kingston weather in May
In May, Kingston averages a high of 19°C and a low of 7°C. It gets 75 mm of precipitation over about 13 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The May record high is 33°C (2024) and the record low is -6°C (1986). May is one of the most comfortable months to visit.
Kingston weather in June
In June, Kingston averages a high of 24°C and a low of 12°C. It gets 78 mm of precipitation over about 12 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The June record high is 34°C (1999) and the record low is -1°C (1986). June is one of the most comfortable months to visit.
Kingston weather in July
In July, Kingston averages a high of 27°C and a low of 15°C. It gets 76 mm of precipitation over about 11 rainy days. Estimated sunshine is 48% of daylight hours, derived from ERA5 cloud cover. The July record high is 35°C (2020) and the record low is 4°C (1981). July is one of the most comfortable months to visit.
Kingston weather in August
In August, Kingston averages a high of 26°C and a low of 14°C. It gets 81 mm of precipitation over about 11 rainy days. Estimated sunshine is 45% of daylight hours, derived from ERA5 cloud cover. The August record high is 35°C (1988) and the record low is 1°C (1988). August is one of the most comfortable months to visit.
Kingston weather in September
In September, Kingston averages a high of 22°C and a low of 9°C. It gets 90 mm of precipitation over about 11 rainy days. Estimated sunshine is 46% of daylight hours, derived from ERA5 cloud cover. The September record high is 35°C (2007) and the record low is -6°C (1991). September is one of the most comfortable months to visit.
Kingston weather in October
In October, Kingston averages a high of 15°C and a low of 4°C. It gets 107 mm of precipitation over about 14 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The October record high is 29°C (1983) and the record low is -11°C (1972).
Kingston weather in November
In November, Kingston averages a high of 8°C and a low of -1°C. It gets 86 mm of precipitation over about 14 rainy days. Estimated sunshine is 38% of daylight hours, derived from ERA5 cloud cover. The November record high is 25°C (1971) and the record low is -22°C (2019).
Kingston weather in December
In December, Kingston averages a high of 2°C and a low of -7°C. It gets 80 mm of precipitation over about 16 rainy days. Estimated sunshine is 23% of daylight hours, derived from ERA5 cloud cover. The December record high is 21°C (2012) and the record low is -38°C (1980).
Sunshine, humidity and wind in Kingston
July is the sunniest month in Kingston, with estimated sunshine of 48% of daylight hours from ERA5 cloud cover. December is the cloudiest, at 23%. The annual cloud-cover estimate is 38% of daylight hours; it is not a measurement of sunshine duration. Kingston is cloudier than 92% of the US.
Humidity peaks in December at 80% and is lowest in April at 69%.
Wind averages 12 km/h over the year, and April is the windiest month at 14 km/h.
Kingston has about 3 days a year above 32°C. Kingston is cooler than 95% of the US.
Thunderstorms occur on about 22 days a year.
First and last freeze in Kingston
The first fall freeze in Kingston typically comes around September 29, and the last spring freeze around May 13. That leaves a frost-free growing season of about 139 days.
Kingston weather records
These records cover WATERTOWN AP during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Kingston station is 35°C, on August 3, 1988. The coldest is -42°C, on January 16, 1994.
The wettest day in the available station history brought 104 mm of precipitation, on August 8, 1981.
35 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.3°C per decade since 1970.
The best time to visit Kingston
The most comfortable time to visit is typically May to September, when daytime highs sit near 23°C.
Winter (December–February) is cold, with average highs around 0°C and lows near -10°C. Snow is possible.
Spring (March–May) is chilly, with average highs around 12°C and lows near 0°C.
Summer (June–August) is warm, with average highs around 25°C and lows near 14°C. It can feel humid.
Autumn (September–November) is mild, with average highs around 15°C and lows near 4°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Wind | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|---|
| January | -12° | -1° | 73 mm | 16 | 14 km/h | 79% | 27% | 19° | -42° |
| February | -12° | 0° | 55 mm | 14 | 14 km/h | 73% | 32% | 21° | -38° |
| March | -6° | 4° | 60 mm | 13 | 14 km/h | 71% | 34% | 29° | -31° |
| April | 1° | 12° | 78 mm | 13 | 14 km/h | 69% | 36% | 32° | -13° |
| May | 7° | 19° | 75 mm | 13 | 12 km/h | 69% | 44% | 33° | -6° |
| June | 12° | 24° | 78 mm | 12 | 10 km/h | 74% | 44% | 34° | -1° |
| July | 15° | 27° | 76 mm | 11 | 10 km/h | 76% | 48% | 35° | 4° |
| August | 14° | 26° | 81 mm | 11 | 10 km/h | 78% | 45% | 35° | 1° |
| September | 9° | 22° | 90 mm | 11 | 10 km/h | 79% | 46% | 35° | -6° |
| October | 4° | 15° | 107 mm | 14 | 12 km/h | 78% | 39% | 29° | -11° |
| November | -1° | 8° | 86 mm | 14 | 13 km/h | 75% | 38% | 25° | -22° |
| December | -7° | 2° | 80 mm | 16 | 14 km/h | 80% | 23% | 21° | -38° |
Station: WATERTOWN AP, 45 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Kingston climate questions
How much rain does Kingston get?
Kingston gets 942 mm of precipitation in an average year, over about 158 rainy days.
What is the wettest month in Kingston?
October is the wettest month in Kingston, with 107 mm. February is the driest, with 55 mm.
How many rainy days does Kingston have a year?
Kingston has about 158 days with measurable rain in an average year. January has the most, about 16.
What is the hottest month in Kingston?
July is the warmest month in Kingston, with an average high of 27°C.
What is the coldest month in Kingston?
January is the coldest month in Kingston, with an average low of -12°C.
What is the record high temperature in Kingston?
Within the available 1970–2026 station history, the record high at the Kingston station is 35°C, set on August 3, 1988. The record low is -42°C, on January 16, 1994.
What is the sunniest month in Kingston?
July is the sunniest month in Kingston, with estimated sunshine of 48% of daylight hours from ERA5 cloud cover. December is the cloudiest.
When is the first frost in Kingston?
The first fall freeze in Kingston typically comes around September 29. The last spring freeze is around May 13.
What is the best time to visit Kingston?
The most comfortable time to visit is typically May to September, when daytime highs sit near 23°C.