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

Monthly weather forecast and climate
Chatham, NY

January, like December, is a freezing cold winter month in Chatham, New York, with average temperature fluctuating between 29.1°F (-1.6°C) and 16.7°F (-8.5°C). With an average high-temperature of 29.1°F (-1.6°C) and an average low-temperature of 16.7°F (-8.5°C), January is the coldest month. Weather in January »

February, the last month of the winter, in Chatham, is a cold month, with average temperature varying between 32.5°F (0.3°C) and 18°F (-7.8°C). In February, the average high-temperature is relatively the same as in January - a wintry 32.5°F (0.3°C). Weather in February »

March, the first month of the spring, in Chatham, is still a cold month, with average temperature fluctuating between 25.7°F (-3.5°C) and 41.2°F (5.1°C). In Chatham, the average high-temperature slightly increases, from a cold 32.5°F (0.3°C) in February, to a still wintry 41.2°F (5.1°C). Weather in March »

April is a cool spring month in Chatham, New York, with temperature in the range of an average low of 36.1°F (2.3°C) and an average high of 54.3°F (12.4°C). In April, the average high-temperature increases, from a cold 41.2°F (5.1°C) in March, to a fresh 54.3°F (12.4°C). Weather in April »

May, the last month of the spring, in Chatham, is an enjoyable month, with average temperature ranging between max 67.3°F (19.6°C) and min 46.6°F (8.1°C). In May, the average high-temperature increases, from a cool 54.3°F (12.4°C) in April, to a comfortable 67.3°F (19.6°C). Weather in May »

June, the first month of the summer, in Chatham, is a warm month, with average temperature fluctuating between 74.8°F (23.8°C) and 53.2°F (11.8°C). In June, the average high-temperature slightly increases, from a comfortable 67.3°F (19.6°C) in May, to a warm 74.8°F (23.8°C). Weather in June »

July, like June, in Chatham, New York, is another warm summer month, with average temperature ranging between min 59°F (15°C) and max 80.8°F (27.1°C). The warmest month is July, with an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 59°F (15°C). In July, the average heat index is calculated to 85.5°F (29.7°C). Weather in July »

August, the last month of the summer, in Chatham, is another warm month, with average temperature varying between 78.8°F (26°C) and 57.2°F (14°C). In Chatham, the average high-temperature is almost the same as in July - a still warm 78.8°F (26°C). Weather in August »

September, the first month of the autumn, in Chatham, is also an agreeable month, with average temperature fluctuating between 71.2°F (21.8°C) and 51.1°F (10.6°C). In Chatham, the average high-temperature slightly decreases, from a moderately hot 78.8°F (26°C) in August, to an agreeable 71.2°F (21.8°C). Weather in September »

October, the same as September, in Chatham, New York, is another mild autumn month, with average temperature varying between 42.8°F (6°C) and 58.1°F (14.5°C). In Chatham, the average high-temperature in October drops, from a pleasant 71.2°F (21.8°C) in September, to a moderate 58.1°F (14.5°C). Weather in October »

The last month of the autumn, November, is also a frosty month in Chatham, New York, with average temperature fluctuating between 32°F (0°C) and 45.5°F (7.5°C). In November, the average high-temperature drops, from a mild 58.1°F (14.5°C) in October, to a frosty 45.5°F (7.5°C). Weather in November »

The first month of the winter, December, is also a wintry month in Chatham, New York, with temperature in the range of an average high of 34.9°F (1.6°C) and an average low of 24.1°F (-4.4°C). In Chatham, the average high-temperature in December drops, from a chilly 45.5°F (7.5°C) in November, to a cold 34.9°F (1.6°C). Weather in December »

What is the coldest month in Chatham?

The coldest month is January, with an average high-temperature of 29.1°F (-1.6°C) and an average low-temperature of 16.7°F (-8.5°C).

How much does it rain in Chatham?

Throughout the year, in Chatham, New York, there are 135.1 rainfall days, and 20.39" (518mm) of precipitation is accumulated.

What is the driest month in Chatham?

January is the month with the least rainfall in Chatham, New York. Rain falls for 5.7 days and accumulates 1.1" (28mm) of precipitation.

When does it snow in Chatham?

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

How much does it snow in Chatham?

In Chatham, New York, during the entire year, snow falls for 36.9 days, and aggregates up to 15.98" (406mm) of snow.

When is the lowest UV index in Chatham?

Months with the lowest UV index in Chatham, New York, are January through March, November and December, with an average maximum UV index of 2.

What is the most humid month in Chatham?

February and December, with an average relative humidity of 83%, are most humid months in Chatham.

What is the month with the least sunshine in Chatham?

With an average of 3.8h of sunshine, February has the least sunshine of the year in Chatham.

When does it snow the most in Chatham?

The month with the most snowfall in Chatham is March when snow falls for 7.8 days and typically aggregates up to 3.9" (99mm) of snow.

What is the least humid month in Chatham?

With an average relative humidity of 75%, April is the least humid month.

When is the highest UV index in Chatham?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Chatham, New York.

When it does not snow in Chatham?

In Chatham snow does not fall in June through September.

When are the longest days in Chatham?

The month with the longest days in Chatham, New York, is June, with an average of 15.2h of daylight.

What is the warmest month in Chatham?

July is the warmest month, with an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 59°F (15°C).

What is the wettest month in Chatham?

July is the month with the most rainfall in Chatham. Rain falls for 14.9 days and accumulates 2.4" (61mm) of precipitation.

What are the months with the most sunshine in Chatham?

Months with the most sunshine in Chatham, New York, are July and August, with an average of 10.3h of sunshine.

What is the month with the shortest days in Chatham?

With an average of 9.1h of daylight, December has the shortest days of the year.
Average humidity - Chatham, NY
Average rainfall - Chatham, NY
Average rainfall days - Chatham, NY

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (5.7 days).

Average snowfall - Chatham, NY
Average snowfall days - Chatham, NY

The month with the highest number of snowfall days is February (9.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Chatham, NY

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.1h).

Months with the most sunshine are July and August (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 3.8h).

Average UV index - Chatham, NY

Months with the highest UV index are May, June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 2).