Monthly weather forecast and climate
Mahwah, NJ

Weather in January

January, the same as December, is another cold winter month in Mahwah, New Jersey, with average temperature ranging between min 21.7°F (-5.7°C) and max 34.3°F (1.3°C). The coldest month is January, with an average high-temperature of 34.3°F (1.3°C) and an average low-temperature of 21.7°F (-5.7°C). Weather in January »

Weather in February

February, the last month of the winter, in Mahwah, is another cold month, with average temperature varying between 23.4°F (-4.8°C) and 37.8°F (3.2°C). In Mahwah, the average high-temperature is essentially the same as in January - a still wintry 37.8°F (3.2°C). Weather in February »

Weather in March

March, the first month of the spring, in Mahwah, is a frosty month, with average temperature varying between 30.7°F (-0.7°C) and 46°F (7.8°C). In Mahwah, the average high-temperature slightly increases, from a cold 37.8°F (3.2°C) in February, to a chilly 46°F (7.8°C). Weather in March »

Weather in April

April is a moderate spring month in Mahwah, New Jersey, with average temperature fluctuating between 41°F (5°C) and 58.3°F (14.6°C). In April, the average high-temperature increases, from a chilly 46°F (7.8°C) in March, to a moderate 58.3°F (14.6°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Mahwah, New Jersey, with average temperature varying between 69.6°F (20.9°C) and 50.7°F (10.4°C). In Mahwah, the average high-temperature rises, from a moderate 58.3°F (14.6°C) in April, to an agreeable 69.6°F (20.9°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Mahwah, New Jersey, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 77.5°F (25.3°C). In June, the average high-temperature slightly increases, from an agreeable 69.6°F (20.9°C) in May, to a warm 77.5°F (25.3°C). Weather in June »

Weather in July

July, like June, in Mahwah, New Jersey, is another warm summer month, with average temperature ranging between max 84.2°F (29°C) and min 65.3°F (18.5°C). The warmest month is July, with an average high-temperature of 84.2°F (29°C) and an average low-temperature of 65.3°F (18.5°C). In July, the average heat index is appraised at a tropical 91.9°F (33.3°C). Weather in July »

Weather in August

August, the last month of the summer, in Mahwah, is also a moderately hot month, with average temperature fluctuating between 82.4°F (28°C) and 63.9°F (17.7°C). In Mahwah, the average high-temperature is almost the same as in July - a still moderately hot 82.4°F (28°C). Weather in August »

Weather in September

September, the first month of the autumn, in Mahwah, is still a warm month, with temperature in the range of an average high of 74.8°F (23.8°C) and an average low of 56.8°F (13.8°C). In Mahwah, the average high-temperature marginally drops, from 82.4°F (28°C) in August, to a still moderately hot 74.8°F (23.8°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Mahwah, New Jersey, with average temperature varying between 62.2°F (16.8°C) and 47.1°F (8.4°C). In Mahwah, the average high-temperature decreases, from a moderately hot 74.8°F (23.8°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 Mahwah, is also a fresh month, with temperature in the range of an average low of 36.1°F (2.3°C) and an average high of 50°F (10°C). In Mahwah, the average high-temperature drops, from a comfortable 62.2°F (16.8°C) in October, to a fresh 50°F (10°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Mahwah, New Jersey, with average temperature varying between 40.1°F (4.5°C) and 29.1°F (-1.6°C). In Mahwah, the average high-temperature in December drops, from a fresh 50°F (10°C) in November, to a wintry 40.1°F (4.5°C). Weather in December »
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FAQ

What is the coldest month in Mahwah?

With an average high-temperature of 34.3°F (1.3°C) and an average low-temperature of 21.7°F (-5.7°C), January is the coldest month in Mahwah, New Jersey.

How much does it rain in Mahwah?

Throughout the year, in Mahwah, there are 150.6 rainfall days, and 25.12" (638mm) of precipitation is accumulated.

When does it snow in Mahwah?

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

How many days does it snow in Mahwah?

In Mahwah, during the entire year, snow falls for 28.5 days, and aggregates up to 10.98" (279mm) of snow.

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

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

What is the most humid month in Mahwah?

Months with the highest humidity in Mahwah are February and December, with an average relative humidity of 79%.

When does it snow the most in Mahwah?

February is the month with the most snowfall in Mahwah. Snow falls for 7.7 days and accumulates 2.91" (74mm) of snow.

What is the month with the least sunshine in Mahwah?

With an average of 4.5h of sunshine, February has the least sunshine of the year in Mahwah.

What is the least humid month in Mahwah?

April is the least humid month, with an average relative humidity of 72%.

When it does not snow in Mahwah?

June through September are months without snowfall.

When are the longest days in Mahwah?

June has the longest days of the year, with an average of 15.1h of daylight.

What is the month with the highest UV index in Mahwah?

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

What is the warmest month in Mahwah?

The warmest month is July, with an average high-temperature of 84.2°F (29°C) and an average low-temperature of 65.3°F (18.5°C).

What month has the most sunshine in Mahwah?

With an average of 10.4h of sunshine, July has the most sunshine of the year.

What is the driest month in Mahwah?

September is the month with the least rainfall. Rain falls for 11 days and accumulates 1.34" (34mm) of precipitation.

What is the rainiest month in Mahwah?

The month with the most rainfall is December when the rain falls for 10.8 days and typically aggregates up to 2.68" (68mm) of precipitation.

What is the month with the shortest days in Mahwah?

December has the shortest days of the year in Mahwah, with an average of 9.3h of daylight.

Average temperature
Mahwah, NJ

Average temperature - Mahwah, NJ

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (34.3°F).

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

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Average pressure
Mahwah, NJ

Average pressure - Mahwah, NJ

The month with the highest atmospheric pressure is November (30.1").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed
Mahwah, NJ

Average wind speed - Mahwah, NJ

The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity
Mahwah, NJ

Average humidity - Mahwah, NJ

Months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is April (72%).

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Average rainfall
Mahwah, NJ

Average rainfall - Mahwah, NJ

The wettest month (with the highest rainfall) is December (2.68").
The driest month (with the least rainfall) is September (1.34").

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Average rainfall days
Mahwah, NJ

Average rainfall days - Mahwah, NJ

The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall
Mahwah, NJ

Average snowfall - Mahwah, NJ

The month with the highest snowfall is February (2.91").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Mahwah, NJ

Average snowfall days - Mahwah, NJ

The month with the highest number of snowfall days is February (7.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Mahwah, NJ

Average daylight / Average sunshine - Mahwah, NJ

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.5h).

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Average sunshine days
Mahwah, NJ

Average sunshine days - Mahwah, NJ

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (11.8 days).

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Average UV index
Mahwah, NJ

Average UV index - Mahwah, NJ

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

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Average visibility
Mahwah, NJ

Average visibility - Mahwah, NJ

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

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