Climate and monthly weather forecast
Mountain Lakes, NJ

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Weather in January

January, the same as December, is a wintry winter month in Mountain Lakes, New Jersey, with an average temperature ranging between min 21.6°F (-5.8°C) and max 34.5°F (1.4°C). January is Mountain Lakes's coldest month, registering average high temperatures of 34.5°F (1.4°C) and lows of 21.6°F (-5.8°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Mountain Lakes, New Jersey, with an average temperature varying between 37.8°F (3.2°C) and 23.5°F (-4.7°C). The shift into February reveals an average high-temperature of a still wintry 37.8°F (3.2°C), closely mirroring January's climate. Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Mountain Lakes, New Jersey, with an average temperature fluctuating between 45.9°F (7.7°C) and 30.6°F (-0.8°C). With the onset of March, Mountain Lakes's weather sees a minor temperature rise, transitioning from a wintry 37.8°F (3.2°C) in February to a chilly 45.9°F (7.7°C). Weather in March »

Weather in April

April in Mountain Lakes, New Jersey, is a refreshing spring month, with an average temperature fluctuating between 40.6°F (4.8°C) and 58.3°F (14.6°C). Mountain Lakes's transition into April brings a rise in the average high-temperature, moving from a frosty 45.9°F (7.7°C) in March to a refreshing 58.3°F (14.6°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Mountain Lakes, New Jersey, with an average temperature fluctuating between 68.9°F (20.5°C) and 50.7°F (10.4°C). The transition to May introduces an increase in the average high-temperature, shifting from a moderate 58.3°F (14.6°C) in April to an agreeable 68.9°F (20.5°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Mountain Lakes, New Jersey, with an average temperature varying between 57.9°F (14.4°C) and 77°F (25°C). With the onset of June, Mountain Lakes observes a minor temperature ascent, with the average high-temperature adjusting from May's pleasant 68.9°F (20.5°C) to a warm 77°F (25°C). Weather in June »

Weather in July

July, like June, in Mountain Lakes, New Jersey, is another warm summer month, with an average temperature ranging between min 64.8°F (18.2°C) and max 83.1°F (28.4°C). Mountain Lakes registers the highest average temperatures during the month of July, with peaks of 83.1°F (28.4°C) and lows of 64.8°F (18.2°C). For most parts of July, the heat index is computed to be a tropical 89.6°F (32°C). Weather in July »

Weather in August

August, the last month of the summer in Mountain Lakes, is another warm month, with an average temperature fluctuating between 63°F (17.2°C) and 81.3°F (27.4°C). August brings a marginal elevation to a still warm 81.3°F (27.4°C) from July's 83.1°F (28.4°C) in Mountain Lakes's average high-temperatures. Weather in August »

Weather in September

September, the first month of the autumn in Mountain Lakes, is still a warm month, with an average temperature varying between 56.3°F (13.5°C) and 74.3°F (23.5°C). As August transitions into September, Mountain Lakes sees a gentle drop in the average high-temperature, transitioning from a moderately hot 81.3°F (27.4°C) to a still warm 74.3°F (23.5°C). Weather in September »

Weather in October

October, like September, in Mountain Lakes, New Jersey, is another enjoyable autumn month, with an average temperature fluctuating between 46.6°F (8.1°C) and 62.1°F (16.7°C). October's onset brings a reduction in the average high-temperature, 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

The last month of the autumn, November, is another chilly month in Mountain Lakes, New Jersey, with temperature in the range of an average low of 36°F (2.2°C) and an average high of 49.8°F (9.9°C). As November arrives, Mountain Lakes's weather displays a decrease in high-temperatures, transitioning from October's enjoyable 62.1°F (16.7°C) 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 also a wintry month, with an average temperature ranging between max 40.1°F (4.5°C) and min 29.1°F (-1.6°C). In Mountain Lakes, the average high-temperature in December drops from a frosty 49.8°F (9.9°C) in November to an icy 40.1°F (4.5°C). Weather in December »
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in Mountain Lakes?

During the coldest month in Mountain Lakes, January, temperatures average a high of 34.5°F (1.4°C) and a low of 21.6°F (-5.8°C).

How much 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?

Months with snowfall in Mountain Lakes, New Jersey, are January through May, October through December.

How much does it snow in Mountain Lakes?

In Mountain Lakes, during the entire year, snow falls for 30.9 days and aggregates up to 15.79" (401mm) of snow.

What are the months with the lowest UV index in Mountain Lakes?

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

What is the most humid month in Mountain Lakes?

The months with the highest humidity in Mountain Lakes, New Jersey, 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 in Mountain Lakes, with an average of 4.4h of sunshine.

When does it snow the most 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.

When is Daylight Saving Time (DST) in Mountain Lakes?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 is the least humid month in Mountain Lakes?

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

When it does not snow in Mountain Lakes?

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

When are the longest days in Mountain Lakes?

With an average of 15h and 6min of daylight, June has the longest days of the year in Mountain Lakes.

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

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

What month is the hottest in Mountain Lakes?

July stands out as Mountain Lakes's warmest month, with temperatures ranging between an average high of 83.1°F (28.4°C) and a low of 64.8°F (18.2°C).

What month has the most sunshine in Mountain Lakes?

The month with the most sunshine in Mountain Lakes is July, with an average of 10.2h of sunshine.

What is the driest month in Mountain Lakes?

The month with the least rainfall in Mountain Lakes is September, when the rain falls for 12.5 days and typically collects 1.77" (45mm) of precipitation.

What is the wettest month in Mountain Lakes?

December is the month with the most rainfall. Rain falls for 11.2 days and accumulates 3.43" (87mm) of precipitation.

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

December has the shortest days of the year in Mountain Lakes, with an average of 9h and 18min 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).

Average pressure
Mountain Lakes, NJ

Average pressure - Mountain Lakes, 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).

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).

Average humidity
Mountain Lakes, NJ

Average humidity - Mountain Lakes, NJ

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

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").

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).

Average snowfall
Mountain Lakes, NJ

Average snowfall - Mountain Lakes, NJ

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

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).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Mountain Lakes, NJ

Average daylight / Average sunshine - Mountain Lakes, NJ

The month with the longest days is June (Average daylight: 15h and 6min).
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 12min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

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).

Average UV index
Mountain Lakes, NJ

Average UV index - Mountain Lakes, 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).

Average cloud cover
Mountain Lakes, NJ

Average cloud cover - Mountain Lakes, NJ

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

Average visibility
Mountain Lakes, NJ

Average visibility - Mountain Lakes, NJ

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

Mountain Lakes, New Jersey, USA

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