Monthly weather forecast and climate
Mountain Lakes, NJ

Weather in January

January, like December, in Mountain Lakes, New Jersey, is another cold winter month, with average temperature fluctuating between 34.5°F (1.4°C) and 21.6°F (-5.8°C). With an average high-temperature of 34.5°F (1.4°C) and an average low-temperature of 21.6°F (-5.8°C), January is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Mountain Lakes, New Jersey, with average temperature varying between 23.5°F (-4.7°C) and 37.8°F (3.2°C). In February, the average high-temperature is relatively 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 Mountain Lakes, is a chilly month, with temperature in the range of an average high of 45.9°F (7.7°C) and an average low of 30.6°F (-0.8°C). In Mountain Lakes, the average high-temperature slightly increases, from a cold 37.8°F (3.2°C) in February, to a frosty 45.9°F (7.7°C). Weather in March »

Weather in April

April is a moderate spring month in Mountain Lakes, New Jersey, with average temperature varying between 58.3°F (14.6°C) and 40.6°F (4.8°C). In April, the average high-temperature increases, from a frosty 45.9°F (7.7°C) in March, to a mild 58.3°F (14.6°C). Weather in April »

Weather in May

May, the last month of the spring, in Mountain Lakes, is a pleasant month, with average temperature varying between 50.7°F (10.4°C) and 68.9°F (20.5°C). In Mountain Lakes, New Jersey, the average high-temperature in May increases, from a moderate 58.3°F (14.6°C) in April, to a pleasant 68.9°F (20.5°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Mountain Lakes, New Jersey, with average temperature fluctuating between 77°F (25°C) and 57.9°F (14.4°C). In June, the average high-temperature marginally rises, from a pleasant 68.9°F (20.5°C) in May, to a moderately hot 77°F (25°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Mountain Lakes, New Jersey, with average temperature ranging between min 64.8°F (18.2°C) and max 83.1°F (28.4°C). The warmest month is July, with an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 64.8°F (18.2°C). The average heat index is calculated to a hot 90.3°F (32.4°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Mountain Lakes, New Jersey, with temperature in the range of an average low of 63°F (17.2°C) and an average high of 81.3°F (27.4°C). In Mountain Lakes, the average high-temperature is relatively the same as in July - a still moderately hot 81.3°F (27.4°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Mountain Lakes, New Jersey, with average temperature varying between 56.3°F (13.5°C) and 74.3°F (23.5°C). In September, the average high-temperature marginally drops, from 81.3°F (27.4°C) in August, to a still warm 74.3°F (23.5°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Mountain Lakes, New Jersey, with average temperature fluctuating between 62.1°F (16.7°C) and 46.6°F (8.1°C). In Mountain Lakes, the average high-temperature drops, from a moderately hot 74.3°F (23.5°C) in September, to a comfortable 62.1°F (16.7°C). Weather in October »

Weather in November

November, the last month of the autumn, in Mountain Lakes, is also a frosty month, with average temperature ranging between min 36°F (2.2°C) and max 49.8°F (9.9°C). In Mountain Lakes, the average high-temperature in November decreases, from a comfortable 62.1°F (16.7°C) in October, to a chilly 49.8°F (9.9°C). Weather in November »

Weather in December

December, the first month of the winter, in Mountain Lakes, is still a cold month, with average temperature fluctuating between 29.1°F (-1.6°C) and 40.1°F (4.5°C). In Mountain Lakes, New Jersey, the average high-temperature drops, from a frosty 49.8°F (9.9°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 Mountain Lakes?

With an average high-temperature of 34.5°F (1.4°C) and an average low-temperature of 21.6°F (-5.8°C), January is the coldest month.

How many days does it rain in Mountain Lakes?

In Mountain Lakes, New Jersey, during the entire year, the rain falls for 161.2 days and collects up to 33.74" (857mm) of precipitation.

When does it snow in Mountain Lakes?

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

How much does it snow in Mountain Lakes?

Throughout the year, in Mountain Lakes, there are 30.9 snowfall days, and 15.79" (401mm) of snow is accumulated.

What is the month with the lowest UV index in Mountain Lakes?

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

What is the most humid month in Mountain Lakes?

Months with the highest humidity are February, October and December, with an average relative humidity of 80%.

What is the month with the least sunshine in Mountain Lakes?

February has the least sunshine of the year, with an average of 4.4h of sunshine.

What is the snowiest month in Mountain Lakes?

The month with the most snowfall is March when snow falls for 6.1 days and typically aggregates up to 4.69" (119mm) of snow.

What is the least humid month in Mountain Lakes?

April is the least humid month, with an average relative humidity of 74%.

When it does not snow in Mountain Lakes?

In Mountain Lakes snow does not fall in June through September.

When are the longest days in Mountain Lakes?

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

What is the month with the highest UV index in Mountain Lakes?

Months with the highest UV index in Mountain Lakes are June through August, with an average maximum UV index of 6.

What is the warmest month in Mountain Lakes?

July is the warmest month in Mountain Lakes, with an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 64.8°F (18.2°C).

What month has the most sunshine in Mountain Lakes?

With an average of 10.2h of sunshine, July has the most sunshine of the year.

What is the driest month in Mountain Lakes?

September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 1.77" (45mm) of precipitation.

What is the rainiest month in Mountain Lakes?

December is the month with the most rainfall in Mountain Lakes, New Jersey. Rain falls for 11.2 days and accumulates 3.43" (87mm) of precipitation.

What is the month with the shortest days in Mountain Lakes?

The month with the shortest days in Mountain Lakes is December, with an average of 9.3h of daylight.

Average temperature
Mountain Lakes, NJ

Average temperature - Mountain Lakes, NJ

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (34.5°F).

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure
Mountain Lakes, NJ

Average pressure - Mountain Lakes, NJ

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

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Average wind speed
Mountain Lakes, NJ

Average wind speed - Mountain Lakes, NJ

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity
Mountain Lakes, NJ

Average humidity - Mountain Lakes, NJ

Months with the highest relative humidity are February, October and December (80%).
The month with the lowest relative humidity is April (74%).

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Average rainfall
Mountain Lakes, NJ

Average rainfall - Mountain Lakes, NJ

The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days
Mountain Lakes, NJ

Average rainfall days - Mountain Lakes, NJ

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall
Mountain Lakes, NJ

Average snowfall - Mountain Lakes, NJ

The month with the highest snowfall is March (4.69").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Mountain Lakes, NJ

Average snowfall days - Mountain Lakes, NJ

The month with the highest number of snowfall days is February (8.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Mountain Lakes, NJ

Average daylight / Average sunshine - Mountain Lakes, 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: 10.2h).
The month with the least sunshine is February (Average sunshine: 4.4h).

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Average sunshine days
Mountain Lakes, NJ

Average sunshine days - Mountain Lakes, NJ

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is April (11.2 days).

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Average UV index
Mountain Lakes, NJ

Average UV index - Mountain Lakes, 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 cloud cover
Mountain Lakes, NJ

Average cloud cover - Mountain Lakes, NJ

Months with the most cloud cover are February, March and December (Cloud cover 50).
Months with the least cloud cover are July and August (Cloud cover 35).

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Average visibility
Mountain Lakes, NJ

Average visibility - Mountain Lakes, NJ

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

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