Monthly weather forecast and climate
Old Chatham, NY

January, like December, is another subzero cold winter month in Old Chatham, New York, with average temperature fluctuating between 29.1°F (-1.6°C) and 16.7°F (-8.5°C). 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). Weather in January »

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

The first month of the spring, March, is also a wintry month in Old Chatham, New York, with average temperature fluctuating between 25.7°F (-3.5°C) and 41.2°F (5.1°C). In March, the average high-temperature marginally rises, 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 in Old Chatham, New York, is a cool spring month, with temperature in the range of an average high of 54.3°F (12.4°C) and an average low of 36.1°F (2.3°C). In April, the average high-temperature rises, 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 Old Chatham, is a comfortable month, with temperature in the range of an average low of 46.6°F (8.1°C) and an average high of 67.3°F (19.6°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 Old 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 marginally rises, from a comfortable 67.3°F (19.6°C) in May, to a moderately hot 74.8°F (23.8°C). Weather in June »

July, the same as June, is a moderately hot summer month in Old Chatham, New York, with average temperature fluctuating between 59°F (15°C) and 80.8°F (27.1°C). 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). In July, the average heat index is calculated to 85.5°F (29.7°C). Weather in July »

The last month of the summer, August, is another warm month in Old Chatham, New York, with temperature in the range of an average high of 78.8°F (26°C) and an average low of 57.2°F (14°C). In August, the average high-temperature is essentially the same as in July - a still moderately hot 78.8°F (26°C). Weather in August »

The first month of the autumn, September, is still a pleasant month in Old Chatham, New York, with average temperature fluctuating between 51.1°F (10.6°C) and 71.2°F (21.8°C). In Old Chatham, New York, the average high-temperature marginally drops, from a moderately hot 78.8°F (26°C) in August, to a pleasant 71.2°F (21.8°C). Weather in September »

October, the same as September, in Old Chatham, New York, is another mild autumn month, with average temperature ranging between min 42.8°F (6°C) and max 58.1°F (14.5°C). In October, the average high-temperature 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 another chilly month in Old Chatham, New York, with average temperature fluctuating between 45.5°F (7.5°C) and 32°F (0°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 still a cold month in Old Chatham, New York, with average temperature varying between 24.1°F (-4.4°C) and 34.9°F (1.6°C). In Old Chatham, New York, the average high-temperature drops, from a frosty 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 Old Chatham?

January is the coldest month, 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 Old Chatham?

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

What is the driest month in Old Chatham?

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

When does it snow in Old Chatham?

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

How much does it snow in Old Chatham?

Throughout the year, there are 36.9 snowfall days, and 15.98" (406mm) of snow is accumulated.

What is the month with the lowest UV index in Old Chatham?

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

What are the most humid months in Old Chatham?

Months with the highest humidity are February and December, with an average relative humidity of 83%.

What is the month with the least sunshine in Old Chatham?

The month with the least sunshine in Old Chatham, New York, is February, with an average of 3.8h of sunshine.

What is the snowiest month in Old Chatham?

March is the month with the most snowfall in Old Chatham, New York. Snow falls for 7.8 days and accumulates 3.9" (99mm) of snow.

What is the least humid month in Old Chatham?

With an average relative humidity of 75%, April is the least humid month in Old Chatham, New York.

What are the months with the highest UV index in Old Chatham?

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

When it does not snow in Old Chatham?

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

When are the longest days in Old Chatham?

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

What is the warmest month in Old Chatham?

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

What is the rainiest month in Old Chatham?

The month with the most rainfall in Old Chatham, New York, is July when the rain falls for 14.9 days and typically aggregates up to 2.4" (61mm) of precipitation.

What is the month with the most sunshine in Old Chatham?

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

What is the month with the shortest days in Old Chatham?

December has the shortest days of the year in Old Chatham, New York, with an average of 9.1h of daylight.
Average temperature - Old Chatham, NY
Average pressure - Old Chatham, 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 - Old Chatham, NY

The windiest months (with the highest average wind speed) are January and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity - Old Chatham, NY
Average rainfall - Old Chatham, NY
Average rainfall days - Old 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 - Old Chatham, NY
Average snowfall days - Old 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 - Old 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 sunshine days - Old Chatham, NY
Average UV index - Old 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).

Average visibility - Old Chatham, NY

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