Climate and monthly weather forecast
Long Valley, NJ

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Weather in January

January, the same as December, is an icy winter month in Long Valley, New Jersey, with an average temperature fluctuating between 21.6°F (-5.8°C) and 34°F (1.1°C). January, with average temperatures reaching a high of 34°F (1.1°C) and a low of 21.6°F (-5.8°C), is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Long Valley, is another cold month, with an average temperature varying between 37.9°F (3.3°C) and 23.2°F (-4.9°C). The introduction of February notes a subtle temperature variation to a still icy 37.9°F (3.3°C) from January's 34°F (1.1°C). Weather in February »

Weather in March

March, the first month of the spring in Long Valley, is a chilly month, with an average temperature ranging between min 30.4°F (-0.9°C) and max 45.5°F (7.5°C). The coming of March brings a minor shift in Long Valley's weather, with average high-temperatures adjusting from February's icy 37.9°F (3.3°C) to a frosty 45.5°F (7.5°C). Weather in March »

Weather in April

April in Long Valley, New Jersey, is a moderate spring month, with temperature in the range of an average high of 57.9°F (14.4°C) and an average low of 40.1°F (4.5°C). The shift from March to April sees an increase in the average high-temperature, transitioning from a chilly 45.5°F (7.5°C) to a mild 57.9°F (14.4°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Long Valley, New Jersey, with temperature in the range of an average high of 69.3°F (20.7°C) and an average low of 50.2°F (10.1°C). As April gives way to May, the average high-temperature displays an increase, moving from a moderate 57.9°F (14.4°C) to a pleasant 69.3°F (20.7°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Long Valley, New Jersey, with an average temperature ranging between max 77.4°F (25.2°C) and min 57.6°F (14.2°C). The shift from May to June is marked by a slight increase in the average high-temperature, moving from an agreeable 69.3°F (20.7°C) to a warm 77.4°F (25.2°C). Weather in June »

Weather in July

July, like June, in Long Valley, New Jersey, is a moderately hot summer month, with an average temperature varying between 83.1°F (28.4°C) and 63.3°F (17.4°C). July temperatures tend to peak at an average high of 83.1°F (28.4°C) and dip to a low of 63.3°F (17.4°C). The heat index for July is estimated at 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 Long Valley, New Jersey, with an average temperature fluctuating between 61.3°F (16.3°C) and 81.5°F (27.5°C). August's onset sees an average high-temperature of a still warm 81.5°F (27.5°C), exhibiting a slight fluctuation from the previous month. Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Long Valley, New Jersey, with an average temperature ranging between min 55.2°F (12.9°C) and max 74.3°F (23.5°C). Long Valley records a mild change in average high-temperature during September, easing from 81.5°F (27.5°C) in August to a still moderately hot 74.3°F (23.5°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Long Valley, New Jersey, with an average temperature fluctuating between 61.9°F (16.6°C) and 46°F (7.8°C). In October, the meteorological conditions alter, with the average high-temperature shifting from a moderately hot 74.3°F (23.5°C) in September to a refreshing 61.9°F (16.6°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Long Valley, New Jersey, with temperature in the range of an average high of 49.6°F (9.8°C) and an average low of 34.9°F (1.6°C). As November begins, there is a decrease in the average high-temperature, falling from an enjoyable 61.9°F (16.6°C) in October to a chilly 49.6°F (9.8°C). Weather in November »

Weather in December

December, the first month of the winter in Long Valley, is still a cold month, with an average temperature ranging between max 40.1°F (4.5°C) and min 28.6°F (-1.9°C). December weather is marked by a drop in the average high-temperature, falling from a frosty 49.6°F (9.8°C) in November to a wintry 40.1°F (4.5°C). Weather in December »
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

January proves to be the coldest month, recording an average maximum temperature of 34°F (1.1°C) and a minimum temperature of 21.6°F (-5.8°C).

How many days does it rain?

In Long Valley, during the entire year, the rain falls for 161.9 days and collects up to 28.78" (731mm) of precipitation.

When does it snow?

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

How much does it snow?

In Long Valley, during the entire year, snow falls for 30.8 days and aggregates up to 14.21" (361mm) of snow.

When is the lowest UV index?

The 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?

The months with the highest humidity are February and October, with an average relative humidity of 81%.

What is the snowiest month in Long Valley?

February is the month with the most snowfall. Snow falls for 8.3 days and accumulates 3.78" (96mm) of snow.

What is the month with the least sunshine?

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

When is Daylight Saving Time (DST)?

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?

April is the least humid month in Long Valley, with an average relative humidity of 75%.

When it does not snow?

In Long Valley, snow does not fall in June through September.

When are the longest days?

June has the longest days of the year in Long Valley, with an average of 15h and 6min of daylight.

When is the highest UV index?

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

What part of the year is the hottest?

In Long Valley, July registers the highest temperatures, averaging 83.1°F (28.4°C) at the peak and 63.3°F (17.4°C) at the lowest.

What is the rainiest month?

The month with the most rainfall is July, when the rain falls for 16.6 days and typically aggregates up to 2.95" (75mm) of precipitation.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.3h of sunshine.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 12.2 days and typically collects 1.54" (39mm) of precipitation.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 18min of daylight.

Average temperature
Long Valley, NJ

Average temperature - Long Valley, 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°F).

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure
Long Valley, NJ

Average pressure - Long Valley, 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
Long Valley, NJ

Average wind speed - Long Valley, NJ

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity
Long Valley, NJ

Average humidity - Long Valley, NJ

The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (75%).

Average rainfall
Long Valley, NJ

Average rainfall - Long Valley, NJ

The wettest month (with the highest rainfall) is July (2.95").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days
Long Valley, NJ

Average rainfall days - Long Valley, NJ

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (8.3 days).

Average snowfall
Long Valley, NJ

Average snowfall - Long Valley, NJ

The month with the highest snowfall is February (3.78").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Long Valley, NJ

Average snowfall days - Long Valley, NJ

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Long Valley, NJ

Average daylight / Average sunshine - Long Valley, 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 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days
Long Valley, NJ

Average sunshine days - Long Valley, NJ

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (11.5 days).

Average UV index
Long Valley, NJ

Average UV index - Long Valley, NJ

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

Average visibility
Long Valley, NJ

Average visibility - Long Valley, NJ

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

Long Valley, New Jersey, USA

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