Monthly weather forecast and climate
Williamsville, NY

Weather in January

January, the same as December, in Williamsville, New York, is another subzero cold winter month, with average temperature varying between 29.3°F (-1.5°C) and 18.7°F (-7.4°C). January is the coldest month, with an average high-temperature of 29.3°F (-1.5°C) and an average low-temperature of 18.7°F (-7.4°C). Weather in January »

Weather in February

February, the last month of the winter, in Williamsville, is another freezing cold month, with average temperature varying between 19.8°F (-6.8°C) and 31.3°F (-0.4°C). In Williamsville, the average high-temperature is practically the same as in January - a still subzero cold 31.3°F (-0.4°C). Weather in February »

Weather in March

The first month of the spring, March, is a cold month in Williamsville, New York, with average temperature ranging between min 27.5°F (-2.5°C) and max 40.6°F (4.8°C). In March, the average high-temperature rises, from a freezing cold 31.3°F (-0.4°C) in February, to a cold 40.6°F (4.8°C). Weather in March »

Weather in April

April in Williamsville, New York, is a fresh spring month, with temperature in the range of an average high of 52.7°F (11.5°C) and an average low of 36.5°F (2.5°C). In April, the average high-temperature increases, from a wintry 40.6°F (4.8°C) in March, to a fresh 52.7°F (11.5°C). Weather in April »

Weather in May

May, the last month of the spring, in Williamsville, is a comfortable month, with average temperature fluctuating between 66°F (18.9°C) and 48°F (8.9°C). In Williamsville, the average high-temperature increases, from a cool 52.7°F (11.5°C) in April, to a comfortable 66°F (18.9°C). Weather in May »

Weather in June

The first month of the summer, June, is an agreeable month in Williamsville, New York, with temperature in the range of an average high of 73.2°F (22.9°C) and an average low of 55.9°F (13.3°C). In June, the average high-temperature slightly increases, from an enjoyable 66°F (18.9°C) in May, to a pleasant 73.2°F (22.9°C). Weather in June »

Weather in July

July in Williamsville, New York, is a moderately hot summer month, with average temperature fluctuating between 79.3°F (26.3°C) and 62.2°F (16.8°C). July is the warmest month, with an average high-temperature of 79.3°F (26.3°C) and an average low-temperature of 62.2°F (16.8°C). Weather in July »

Weather in August

August, the last month of the summer, in Williamsville, is another warm month, with average temperature fluctuating between 61.3°F (16.3°C) and 78.1°F (25.6°C). In Williamsville, the average high-temperature is practically the same as in July - a still moderately hot 78.1°F (25.6°C). Weather in August »

Weather in September

September, the first month of the autumn, in Williamsville, is also an agreeable month, with average temperature varying between 71.8°F (22.1°C) and 55°F (12.8°C). In September, the average high-temperature marginally drops, from a warm 78.1°F (25.6°C) in August, to a pleasant 71.8°F (22.1°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Williamsville, New York, with average temperature varying between 45.5°F (7.5°C) and 58.5°F (14.7°C). In Williamsville, New York, the average high-temperature decreases, from an agreeable 71.8°F (22.1°C) in September, to a mild 58.5°F (14.7°C). Weather in October »

Weather in November

November, the last month of the autumn, in Williamsville, is another chilly month, with average temperature ranging between max 45.5°F (7.5°C) and min 34.2°F (1.2°C). In November, the average high-temperature drops, from a moderate 58.5°F (14.7°C) in October, to a chilly 45.5°F (7.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Williamsville, is also a wintry month, with temperature in the range of an average high of 35.4°F (1.9°C) and an average low of 27°F (-2.8°C). In December, the average high-temperature drops, from a chilly 45.5°F (7.5°C) in November, to a wintry 35.4°F (1.9°C). Weather in December »
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FAQ

What is the coldest month in Williamsville?

The coldest month in Williamsville, New York, is January, with an average high-temperature of 29.3°F (-1.5°C) and an average low-temperature of 18.7°F (-7.4°C).

What is the most humid month in Williamsville?

January and February, with an average relative humidity of 86%, are most humid months in Williamsville, New York.

How many days does it rain in Williamsville?

Throughout the year, in Williamsville, there are 139.2 rainfall days, and 14.84" (377mm) of precipitation is accumulated.

When does it snow in Williamsville?

Months with snowfall in Williamsville, New York, are January through May, October through December.

How many days does it snow in Williamsville?

Throughout the year, there are 62.1 snowfall days, and 12.68" (322mm) of snow is accumulated.

When does it snow the most in Williamsville?

Months with the most snowfall in Williamsville, New York, are January and February, with an average 2.95" (75mm) of accumulated snow.

What is the month with the least sunshine in Williamsville?

With an average of 2.4h of sunshine, January has the least sunshine of the year in Williamsville, New York.

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

Months with the lowest UV index in Williamsville are January, February and December, with an average maximum UV index of 1.

When it does not snow in Williamsville?

In Williamsville, New York, snow does not fall in June through September.

When are the longest days in Williamsville?

With an average of 15.3h of daylight, June has the longest days of the year in Williamsville, New York.

What is the warmest month in Williamsville?

July is the warmest month in Williamsville, with an average high-temperature of 79.3°F (26.3°C) and an average low-temperature of 62.2°F (16.8°C).

What are the least humid months in Williamsville?

July and August, with an average relative humidity of 75%, are the least humid months in Williamsville.

What is the rainiest month in Williamsville?

July is the month with the most rainfall in Williamsville, New York. Rain falls for 15.8 days and accumulates 1.61" (41mm) of precipitation.

What are the months with the most sunshine in Williamsville?

Months with the most sunshine are July and August, with an average of 10.4h of sunshine.

When is the highest UV index in Williamsville?

The month with the highest UV index is July, with an average maximum UV index of 6.

What is the driest month in Williamsville?

The month with the least rainfall in Williamsville, New York, is September when the rain falls for 11.3 days and typically collects 0.91" (23mm) of precipitation.

What is the month with the shortest days in Williamsville?

The month with the shortest days in Williamsville, New York, is December, with an average of 9.1h of daylight.

Average temperature
Williamsville, NY

Average temperature - Williamsville, NY

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (29.3°F).

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

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Average pressure
Williamsville, NY

Average pressure - Williamsville, NY

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed
Williamsville, NY

Average wind speed - Williamsville, NY

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

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Average humidity
Williamsville, NY

Average humidity - Williamsville, NY

Months with the highest relative humidity are January and February (86%).
Months with the lowest relative humidity are July and August (75%).

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Average rainfall
Williamsville, NY

Average rainfall - Williamsville, NY

The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is September (0.91").

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Average rainfall days
Williamsville, NY

Average rainfall days - Williamsville, NY

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (6.4 days).

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Average snowfall
Williamsville, NY

Average snowfall - Williamsville, NY

Months with the highest snowfall are January and February (2.95").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Williamsville, NY

Average snowfall days - Williamsville, NY

The month with the highest number of snowfall days is January (15.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Williamsville, NY

Average daylight / Average sunshine - Williamsville, NY

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

Months with the most sunshine are July and August (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 2.4h).

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Average sunshine days
Williamsville, NY

Average sunshine days - Williamsville, NY

The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (10.2 days).

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Average visibility
Williamsville, NY

Average visibility - Williamsville, NY

Months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February and March (5mi).

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