Ontario
New York, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Ontario, NY

January, the same as December, in Ontario, New York, is another subzero cold winter month, with temperature in the range of an average low of 20.8°F (-6.2°C) and an average high of 29.7°F (-1.3°C). With an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 20.8°F (-6.2°C), January is the coldest month. Weather in January »

February, the last month of the winter, in Ontario, is also a subzero cold month, with average temperature ranging between min 22.3°F (-5.4°C) and max 31.6°F (-0.2°C). In February, the average high-temperature is almost the same as in January - a still freezing cold 31.6°F (-0.2°C). Weather in February »

March, the first month of the spring, in Ontario, is a wintry month, with average temperature fluctuating between 38.8°F (3.8°C) and 29.3°F (-1.5°C). In Ontario, the average high-temperature marginally rises, from a subzero cold 31.6°F (-0.2°C) in February, to a wintry 38.8°F (3.8°C). Weather in March »

April is a chilly spring month in Ontario, New York, with average temperature ranging between min 37.9°F (3.3°C) and max 49.5°F (9.7°C). In April, the average high-temperature rises, from a wintry 38.8°F (3.8°C) in March, to a chilly 49.5°F (9.7°C). Weather in April »

May, the last month of the spring, in Ontario, is a mild month, with average temperature fluctuating between 60.6°F (15.9°C) and 48.6°F (9.2°C). In May, the average high-temperature increases, from a chilly 49.5°F (9.7°C) in April, to a moderate 60.6°F (15.9°C). Weather in May »

The first month of the summer, June, is an agreeable month in Ontario, New York, with temperature in the range of an average low of 57.4°F (14.1°C) and an average high of 68.9°F (20.5°C). In Ontario, the average high-temperature marginally rises, from a moderate 60.6°F (15.9°C) in May, to an agreeable 68.9°F (20.5°C). Weather in June »

July is a moderately hot summer month in Ontario, New York, with average temperature varying between 64.9°F (18.3°C) and 76.5°F (24.7°C). The warmest month is July, with an average high-temperature of 76.5°F (24.7°C) and an average low-temperature of 64.9°F (18.3°C). Weather in July »

The last month of the summer, August, is another warm month in Ontario, New York, with average temperature ranging between min 64.4°F (18°C) and max 75.9°F (24.4°C). In August, the average high-temperature is almost the same as in July - a still warm 75.9°F (24.4°C). Weather in August »

The first month of the autumn, September, is also an agreeable month in Ontario, New York, with average temperature ranging between max 70.3°F (21.3°C) and min 58.3°F (14.6°C). In September, the average high-temperature slightly decreases, from a warm 75.9°F (24.4°C) in August, to an agreeable 70.3°F (21.3°C). Weather in September »

October, like September, is another mild autumn month in Ontario, New York, with average temperature varying between 48.2°F (9°C) and 58.1°F (14.5°C). In Ontario, the average high-temperature in October decreases, from an agreeable 70.3°F (21.3°C) in September, to a mild 58.1°F (14.5°C). Weather in October »

The last month of the autumn, November, is also a frosty month in Ontario, New York, with average temperature ranging between max 45.9°F (7.7°C) and min 36.7°F (2.6°C). In Ontario, the average high-temperature decreases, from a moderate 58.1°F (14.5°C) in October, to a frosty 45.9°F (7.7°C). Weather in November »

December, the first month of the winter, in Ontario, is still a cold month, with average temperature varying between 28.6°F (-1.9°C) and 36.3°F (2.4°C). In Ontario, the average high-temperature in December drops, from a chilly 45.9°F (7.7°C) in November, to a wintry 36.3°F (2.4°C). Weather in December »

What is the coldest month in Ontario?

With an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 20.8°F (-6.2°C), January is the coldest month.

What are the most humid months in Ontario?

January and February, with an average relative humidity of 83%, are most humid months in Ontario, New York.

How many days does it rain in Ontario?

Throughout the year, in Ontario, New York, there are 167.9 rainfall days, and 31.18" (792mm) of precipitation is accumulated.

When does it snow in Ontario?

January through May, October through December are months with snowfall.

How much does it snow in Ontario?

In Ontario, during the entire year, snow falls for 62.3 days, and aggregates up to 20.63" (524mm) of snow.

What is the month with the least sunshine in Ontario?

With an average of 2.6h of sunshine, January has the least sunshine of the year in Ontario.

What are the months with the lowest UV index in Ontario?

Months with the lowest UV index in Ontario, New York, are January and December, with an average maximum UV index of 1.

When does it snow the most in Ontario?

February is the month with the most snowfall. Snow falls for 14.2 days and accumulates 5.98" (152mm) of snow.

When it does not snow in Ontario?

June through September are months without snowfall.

When are the longest days in Ontario?

The month with the longest days in Ontario, New York, is June, with an average of 15.3h of daylight.

What is the warmest month in Ontario?

July is the warmest month in Ontario, with an average high-temperature of 76.5°F (24.7°C) and an average low-temperature of 64.9°F (18.3°C).

What month has the most sunshine in Ontario?

With an average of 10.7h of sunshine, July has the most sunshine of the year.

What are the months with the highest UV index in Ontario?

July and August, with an average maximum UV index of 6, are months with the highest UV index.

What are the least humid months in Ontario?

August and September, with an average relative humidity of 75%, are the least humid months in Ontario, New York.

What is the driest month in Ontario?

The month with the least rainfall in Ontario, New York, is September when the rain falls for 14.2 days and typically collects 2.01" (51mm) of precipitation.

What is the wettest month in Ontario?

The month with the most rainfall in Ontario is October when the rain falls for 17.3 days and typically aggregates up to 3.23" (82mm) of precipitation.

What is the month with the shortest days in Ontario?

With an average of 9h of daylight, December has the shortest days of the year.
Average humidity - Ontario, NY
Average rainfall - Ontario, NY
Average rainfall days - Ontario, NY

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (7.8 days).

Average snowfall - Ontario, NY
Average snowfall days - Ontario, NY

The month with the highest number of snowfall days is January (15.4 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Ontario, NY

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9h).

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is January (Average sunshine: 2.6h).