Climate and monthly weather forecast
Denville, NJ

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Weather in January

January, the same as December, is another cold winter month in Denville, New Jersey, with temperature in the range of an average low of 21.6°F (-5.8°C) and an average high of 34.5°F (1.4°C). In Denville, the month of January registers the lowest temperatures, averaging 34.5°F (1.4°C) at the peak and 21.6°F (-5.8°C) at the lowest. Weather in January »

Weather in February

February, the last month of the winter in Denville, is also a wintry month, with an average temperature fluctuating between 23.5°F (-4.7°C) and 37.8°F (3.2°C). Denville's February showcases an average high-temperature of a still cold 37.8°F (3.2°C), hardly distinct from January's 34.5°F (1.4°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Denville, New Jersey, with an average temperature ranging between min 30.6°F (-0.8°C) and max 45.9°F (7.7°C). March introduces a minor temperature shift, with average high-temperatures adjusting from February's icy 37.8°F (3.2°C) to a chilly 45.9°F (7.7°C). Weather in March »

Weather in April

April in Denville, New Jersey, is a moderate spring month, with temperature in the range of an average high of 58.3°F (14.6°C) and an average low of 40.6°F (4.8°C). April's arrival coincides with a temperature rise, moving from March's frosty 45.9°F (7.7°C) to a refreshing 58.3°F (14.6°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Denville, New Jersey, with an average temperature fluctuating between 50.7°F (10.4°C) and 68.9°F (20.5°C). The transition to May introduces an increase in the average high-temperature, shifting from a mild 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 warm month in Denville, New Jersey, with temperature in the range of an average high of 77°F (25°C) and an average low of 57.9°F (14.4°C). June brings a slight increase in the average high-temperature, progressing from an agreeable 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 Denville, New Jersey, with an average temperature ranging between max 83.1°F (28.4°C) and min 64.8°F (18.2°C). Denville's warmest month, July, registers temperatures that range from a high of 83.1°F (28.4°C) to a low of 64.8°F (18.2°C). The average heat index in July is evaluated at a hot 89.6°F (32°C). Weather in July »

Weather in August

August, the last month of the summer in Denville, is another warm month, with an average temperature ranging between max 81.3°F (27.4°C) and min 63°F (17.2°C). Denville's shift from July to August is accompanied by an average high-temperature of a still warm 81.3°F (27.4°C), a slight deviation from 83.1°F (28.4°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Denville, New Jersey, with an average temperature fluctuating between 56.3°F (13.5°C) and 74.3°F (23.5°C). During the shift to September, a minor reduction in average high-temperature is observed, shifting from a warm 81.3°F (27.4°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 Denville, New Jersey, with an average temperature varying between 46.6°F (8.1°C) and 62.1°F (16.7°C). The shift to October brings a decrease in the average high-temperature, falling from a moderately hot 74.3°F (23.5°C) in September to an enjoyable 62.1°F (16.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Denville, New Jersey, with an average temperature ranging between max 49.8°F (9.9°C) and min 36°F (2.2°C). The commencement of November indicates a shift in the average high-temperature, receding from October's refreshing 62.1°F (16.7°C) to a chilly 49.8°F (9.9°C). Weather in November »

Weather in December

The first month of the winter, December, is also an icy month in Denville, New Jersey, with an average temperature varying between 29.1°F (-1.6°C) and 40.1°F (4.5°C). With December's arrival, Denville sees a decrease in average high-temperatures, moving from a chilly 49.8°F (9.9°C) in November to a wintry 40.1°F (4.5°C). Weather in December »
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Frequently asked questions

What is the coldest month in Denville?

January, with its average high-temperature of 34.5°F (1.4°C) and an average low-temperature of 21.6°F (-5.8°C), holds the record as the coldest month.

How much does it rain in Denville?

In Denville, 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 Denville?

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

How many days does it snow in Denville?

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

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

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

What is the most humid month in Denville?

The months with the highest humidity in Denville are February, October and December, with an average relative humidity of 80%.

What is the month with the least sunshine in Denville?

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

When does it snow the most in Denville?

The month with the most snowfall in Denville, New Jersey, 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 Denville?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Denville, 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 Denville?

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

When it does not snow in Denville?

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

When are the longest days in Denville?

The month with the longest days is June, with an average of 15h and 6min of daylight.

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

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

What are the warmest months in Denville?

July is the warmest month, 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 Denville?

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

What is the driest month in Denville?

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

What is the rainiest month in Denville?

The month with the most rainfall in Denville is December, when the rain falls for 11.2 days and typically aggregates up to 3.43" (87mm) of precipitation.

What is the month with the shortest days in Denville?

With an average of 9h and 18min of daylight, December has the shortest days of the year in Denville, New Jersey.

Average temperature
Denville, NJ

Average temperature - Denville, 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
Denville, NJ

Average pressure - Denville, 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
Denville, NJ

Average wind speed - Denville, 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
Denville, NJ

Average humidity - Denville, NJ

The 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
Denville, NJ

Average rainfall - Denville, 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
Denville, NJ

Average rainfall days - Denville, 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
Denville, NJ

Average snowfall - Denville, NJ

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

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Average snowfall days
Denville, NJ

Average snowfall days - Denville, 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).

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Average daylight / Average sunshine
Denville, NJ

Average daylight / Average sunshine - Denville, 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).

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Average sunshine days
Denville, NJ

Average sunshine days - Denville, 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
Denville, NJ

Average UV index - Denville, 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 cloud cover
Denville, NJ

Average cloud cover - Denville, 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).

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Average visibility
Denville, NJ

Average visibility - Denville, 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).

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Denville, New Jersey, USA

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