Monthly weather forecast and climate
Williamstown, NY

January, the same as December, in Williamstown, New York, is a freezing cold winter month, with average temperature fluctuating between 26.2°F (-3.2°C) and 15.4°F (-9.2°C). January is the coldest month, with an average high-temperature of 26.2°F (-3.2°C) and an average low-temperature of 15.4°F (-9.2°C). Weather in January »

The last month of the winter, February, is also a subzero cold month in Williamstown, New York, with temperature in the range of an average low of 17.4°F (-8.1°C) and an average high of 28.4°F (-2°C). In February, the average high-temperature is relatively the same as in January - a still subzero cold 28.4°F (-2°C). Weather in February »

The first month of the spring, March, is a wintry month in Williamstown, New York, with average temperature ranging between max 37.6°F (3.1°C) and min 24.6°F (-4.1°C). In Williamstown, the average high-temperature in March increases, from a freezing cold 28.4°F (-2°C) in February, to a cold 37.6°F (3.1°C). Weather in March »

April is a fresh spring month in Williamstown, New York, with average temperature ranging between min 34.9°F (1.6°C) and max 51.1°F (10.6°C). In April, the average high-temperature rises, from a cold 37.6°F (3.1°C) in March, to a fresh 51.1°F (10.6°C). Weather in April »

The last month of the spring, May, is an enjoyable month in Williamstown, New York, with average temperature fluctuating between 65.1°F (18.4°C) and 45.7°F (7.6°C). In Williamstown, the average high-temperature in May rises, from a cool 51.1°F (10.6°C) in April, to an enjoyable 65.1°F (18.4°C). Weather in May »

June, the first month of the summer, in Williamstown, is a pleasant month, with temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 52.5°F (11.4°C). In Williamstown, the average high-temperature in June slightly increases, from an enjoyable 65.1°F (18.4°C) in May, to a pleasant 71.2°F (21.8°C). Weather in June »

July is a moderately hot summer month in Williamstown, New York, with average temperature varying between 58.5°F (14.7°C) and 77.4°F (25.2°C). With an average high-temperature of 77.4°F (25.2°C) and an average low-temperature of 58.5°F (14.7°C), July is the warmest month. Weather in July »

August, the last month of the summer, in Williamstown, is another warm month, with average temperature ranging between min 57.2°F (14°C) and max 75.4°F (24.1°C). In August, the average high-temperature is almost the same as in July - a still moderately hot 75.4°F (24.1°C). Weather in August »

September, the first month of the autumn, in Williamstown, is still a pleasant month, with average temperature fluctuating between 51.4°F (10.8°C) and 69.3°F (20.7°C). In September, the average high-temperature slightly decreases, from a warm 75.4°F (24.1°C) in August, to a pleasant 69.3°F (20.7°C). Weather in September »

October, the same as September, in Williamstown, New York, is another mild autumn month, with average temperature varying between 43.3°F (6.3°C) and 55.9°F (13.3°C). In October, the average high-temperature decreases, from a pleasant 69.3°F (20.7°C) in September, to a mild 55.9°F (13.3°C). Weather in October »

The last month of the autumn, November, is also a wintry month in Williamstown, New York, with average temperature ranging between min 31.8°F (-0.1°C) and max 42.6°F (5.9°C). In November, the average high-temperature decreases, from a mild 55.9°F (13.3°C) in October, to a wintry 42.6°F (5.9°C). Weather in November »

The first month of the winter, December, is also a wintry month in Williamstown, New York, with average temperature ranging between min 23.9°F (-4.5°C) and max 32.7°F (0.4°C). In Williamstown, the average high-temperature drops, from 42.6°F (5.9°C) in November, to a still wintry 32.7°F (0.4°C). Weather in December »

What is the coldest month in Williamstown?

The coldest month in Williamstown, New York, is January, with an average high-temperature of 26.2°F (-3.2°C) and an average low-temperature of 15.4°F (-9.2°C).

What are the most humid months in Williamstown?

January and February, with an average relative humidity of 88%, are most humid months.

How many days does it rain in Williamstown?

Throughout the year, in Williamstown, New York, there are 176.3 rainfall days, and 37.09" (942mm) of precipitation is accumulated.

When does it snow in Williamstown?

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

How much does it snow in Williamstown?

Throughout the year, in Williamstown, there are 88.5 snowfall days, and 46.89" (1191mm) of snow is accumulated.

When does it snow the most in Williamstown?

January is the month with the most snowfall. Snow falls for 21.4 days and accumulates 11.54" (293mm) of snow.

What is the month with the least sunshine in Williamstown?

Months with the least sunshine are January and February, with an average of 2.5h of sunshine.

What is the month with the lowest UV index in Williamstown?

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

What are the least humid months in Williamstown?

April and May, with an average relative humidity of 79%, are the least humid months.

What is the wettest month in Williamstown?

The wettest months are May and October, with an average 3.66" (93mm) of rainfall.

When it does not snow in Williamstown?

In Williamstown snow does not fall in June through September.

When are the longest days in Williamstown?

The month with the longest days in Williamstown, New York, is June, with an average of 15.4h of daylight.

What is the warmest month in Williamstown?

The warmest month is July, with an average high-temperature of 77.4°F (25.2°C) and an average low-temperature of 58.5°F (14.7°C).

What month has the most sunshine in Williamstown?

The month with the most sunshine is July, with an average of 10.1h of sunshine.

When is the highest UV index in Williamstown?

July is the month with the highest UV index in Williamstown, New York, with an average maximum UV index of 6.

What is the driest month in Williamstown?

September is the month with the least rainfall in Williamstown. Rain falls for 13.5 days and accumulates 2.13" (54mm) of precipitation.

What is the month with the shortest days in Williamstown?

The month with the shortest days in Williamstown is December, with an average of 9h of daylight.
Average temperature - Williamstown, NY
Average pressure - Williamstown, NY

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.92").

Average wind speed - Williamstown, NY

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

Average humidity - Williamstown, NY
Average rainfall - Williamstown, NY

The wettest months (with the highest rainfall) are May and October (3.66").
The driest month (with the least rainfall) is September (2.13").

Average rainfall days - Williamstown, NY

The month with the highest number of rainy days is October (18.5 days).
The month with the least rainy days is February (8.5 days).

Average snowfall - Williamstown, NY
Average snowfall days - Williamstown, NY

The month with the highest number of snowfall days is January (21.4 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Williamstown, NY

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

The month with the most sunshine is July (Average sunshine: 10.1h).
Months with the least sunshine are January and February (Average sunshine: 2.5).

Average sunshine days - Williamstown, NY

The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (4.6 days).