Climate and monthly weather forecast
Chatham, NJ

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Weather in January

January, the same as December, is another cold winter month in Chatham, New Jersey, with an average temperature fluctuating between 35.1°F (1.7°C) and 22.5°F (-5.3°C). Chatham's coldest month, January, generally records average temperatures ranging from a high of 35.1°F (1.7°C) to a low of 22.5°F (-5.3°C). Weather in January »

Weather in February

February, the last month of the winter in Chatham, is another cold month, with temperature in the range of an average high of 38.3°F (3.5°C) and an average low of 24.3°F (-4.3°C). In February, Chatham's weather conditions record an average high-temperature of a still cold 38.3°F (3.5°C), demonstrating little divergence from the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Chatham, is a frosty month, with temperature in the range of an average low of 31.6°F (-0.2°C) and an average high of 46.4°F (8°C). With the onset of March, the average high-temperature subtly transitions from a cold 38.3°F (3.5°C) in February to a chilly 46.4°F (8°C). Weather in March »

Weather in April

April in Chatham, New Jersey, is a mild spring month, with temperature in the range of an average low of 41.9°F (5.5°C) and an average high of 58.5°F (14.7°C). Chatham's April weather brings a rise in high-temperatures, moving from a frosty 46.4°F (8°C) in March to a mild 58.5°F (14.7°C). Weather in April »

Weather in May

May, the last month of the spring in Chatham, is a pleasant month, with an average temperature ranging between max 69.1°F (20.6°C) and min 51.4°F (10.8°C). As May arrives, a rise in the average high-temperature is observed, moving from a mild 58.5°F (14.7°C) in April to a pleasant 69.1°F (20.6°C). Weather in May »

Weather in June

June, the first month of the summer in Chatham, is a warm month, with an average temperature ranging between max 77.5°F (25.3°C) and min 59°F (15°C). The beginning of June marks a minor shift in the average high-temperature, moving from May's agreeable 69.1°F (20.6°C) to a moderately hot 77.5°F (25.3°C). Weather in June »

Weather in July

July, like June, in Chatham, New Jersey, is a moderately hot summer month, with temperature in the range of an average high of 83.7°F (28.7°C) and an average low of 65.7°F (18.7°C). Chatham's warmest month, July, generally records average temperatures ranging from a high of 83.7°F (28.7°C) to a low of 65.7°F (18.7°C). The heat index for July is computed to be a hot 91.4°F (33°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Chatham, New Jersey, with an average temperature varying between 81.9°F (27.7°C) and 64.2°F (17.9°C). With the advent of August, Chatham experiences an average high-temperature of a still warm 81.9°F (27.7°C), mirroring a close resemblance to the previous month. Weather in August »

Weather in September

September, the first month of the autumn in Chatham, is still a warm month, with temperature in the range of an average high of 74.5°F (23.6°C) and an average low of 57.6°F (14.2°C). September's onset brings a negligible change in high-temperatures, falling from a warm 81.9°F (27.7°C) in August to a still moderately hot 74.5°F (23.6°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Chatham, New Jersey, with an average temperature varying between 62.2°F (16.8°C) and 47.5°F (8.6°C). The start of October comes with a reduction in the average high-temperature, receding from a warm 74.5°F (23.6°C) in September to an enjoyable 62.2°F (16.8°C). Weather in October »

Weather in November

November, the last month of the autumn in Chatham, is another cool month, with an average temperature fluctuating between 36.5°F (2.5°C) and 50.5°F (10.3°C). The onset of November comes with a shift in the average high-temperature, falling from an enjoyable 62.2°F (16.8°C) in October to a cool 50.5°F (10.3°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Chatham, New Jersey, with an average temperature fluctuating between 40.8°F (4.9°C) and 29.7°F (-1.3°C). December comes with a decrease in the average high-temperature, falling from a fresh 50.5°F (10.3°C) in November to an icy 40.8°F (4.9°C). Weather in December »
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Frequently asked questions

What is the coldest month in Chatham?

Temperature records in Chatham mark January as the coldest month, with highs averaging 35.1°F (1.7°C) and lows at 22.5°F (-5.3°C).

How many days does it rain in Chatham?

In Chatham, during the entire year, the rain falls for 164.2 days and collects up to 30.67" (779mm) of precipitation.

When does it snow in Chatham?

January through May, October through December are months with snowfall in Chatham, New Jersey.

How many days does it snow in Chatham?

In Chatham, during the entire year, snow falls for 26 days and aggregates up to 11.61" (295mm) of snow.

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

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

What are the most humid months in Chatham?

February and December, with an average relative humidity of 80%, are most humid months in Chatham.

What is the month with the least sunshine in Chatham?

The month with the least sunshine is February, with an average of 4.6h of sunshine.

When does it snow the most in Chatham?

March is the month with the most snowfall. Snow falls for 5.5 days and accumulates 3.5" (89mm) of snow.

When is Daylight Saving Time (DST) in Chatham?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Chatham, New Jersey, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What are the least humid months in Chatham?

The months with the lowest humidity are April and August, with an average relative humidity of 74%.

When it does not snow in Chatham?

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

When are the longest days in Chatham?

The month with the longest days in Chatham, New Jersey, is June, with an average of 15h and 0min of daylight.

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

June through August, with an average maximum UV index of 6, are months with the highest UV index in Chatham, New Jersey.

What is the hottest time of year in Chatham?

With its average high temperature of 83.7°F (28.7°C) and a low of 65.7°F (18.7°C), July is regarded as the warmest month.

What is the wettest month in Chatham?

The month with the most rainfall is July, when the rain falls for 17.4 days and typically aggregates up to 3.27" (83mm) of precipitation.

What month has the most sunshine in Chatham?

The month with the most sunshine in Chatham, New Jersey, is July, with an average of 10.3h of sunshine.

What is the driest month in Chatham?

September is the month with the least rainfall in Chatham, New Jersey. Rain falls for 13.5 days and accumulates 1.69" (43mm) of precipitation.

What is the month with the shortest days in Chatham?

December has the shortest days of the year in Chatham, with an average of 9h and 18min of daylight.

Average temperature
Chatham, NJ

Average temperature - Chatham, NJ

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.1°F).

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure
Chatham, NJ

Average pressure - Chatham, NJ

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Chatham, NJ

Average wind speed - Chatham, NJ

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity
Chatham, NJ

Average humidity - Chatham, NJ

The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are April and August (74%).

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Average rainfall
Chatham, NJ

Average rainfall - Chatham, NJ

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.69").

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Average rainfall days
Chatham, NJ

Average rainfall days - Chatham, NJ

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is January (8.8 days).

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Average snowfall
Chatham, NJ

Average snowfall - Chatham, NJ

The month with the highest snowfall is March (3.5").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Chatham, NJ

Average snowfall days - Chatham, NJ

The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Chatham, NJ

Average daylight / Average sunshine - Chatham, NJ

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days
Chatham, NJ

Average sunshine days - Chatham, NJ

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (10.5 days).

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Average UV index
Chatham, NJ

Average UV index - Chatham, NJ

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average visibility
Chatham, NJ

Average visibility - Chatham, NJ

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

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Chatham, New Jersey, USA

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