Monthly weather forecast and climate
Denville, NJ

January, the same as December, is a wintry winter month in Denville, New Jersey, with average temperature ranging between max 34.5°F (1.4°C) and min 21.6°F (-5.8°C). The coldest month is January, with an average high-temperature of 34.5°F (1.4°C) and an average low-temperature of 21.6°F (-5.8°C). Weather in January »

The last month of the winter, February, is another cold month in Denville, New Jersey, with average temperature ranging between max 37.8°F (3.2°C) and min 23.5°F (-4.7°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 »

The first month of the spring, March, is a frosty month in Denville, New Jersey, with average temperature fluctuating between 45.9°F (7.7°C) and 30.6°F (-0.8°C). In Denville, New Jersey, the average high-temperature in March slightly increases, from a wintry 37.8°F (3.2°C) in February, to a chilly 45.9°F (7.7°C). Weather in March »

April is a mild spring month in Denville, New Jersey, with average temperature ranging between max 58.3°F (14.6°C) and min 40.6°F (4.8°C). In April, the average high-temperature rises, from a frosty 45.9°F (7.7°C) in March, to a mild 58.3°F (14.6°C). Weather in April »

May, the last month of the spring, in Denville, is an agreeable month, with average temperature ranging between max 68.9°F (20.5°C) and min 50.7°F (10.4°C). In Denville, the average high-temperature increases, from a mild 58.3°F (14.6°C) in April, to a pleasant 68.9°F (20.5°C). Weather in May »

June, the first month of the summer, in Denville, is a warm month, with average temperature ranging between min 57.9°F (14.4°C) and max 77°F (25°C). In Denville, the average high-temperature slightly increases, from an agreeable 68.9°F (20.5°C) in May, to a warm 77°F (25°C). Weather in June »

July, like June, in Denville, New Jersey, is a moderately hot summer month, with average temperature varying between 83.1°F (28.4°C) and 64.8°F (18.2°C). With an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 64.8°F (18.2°C), July is the warmest month. The average heat index in July is estimated at a hot 90.3°F (32.4°C). Weather in July »

August, the last month of the summer, in Denville, is another warm month, 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 August, the average high-temperature is relatively the same as in July - a still moderately hot 81.3°F (27.4°C). Weather in August »

September, the first month of the autumn, in Denville, is still a warm month, with average temperature ranging between min 56.3°F (13.5°C) and max 74.3°F (23.5°C). In Denville, New Jersey, the average high-temperature in September marginally drops, from 81.3°F (27.4°C) in August, to a still warm 74.3°F (23.5°C). Weather in September »

October, the same as September, is another enjoyable autumn month in Denville, New Jersey, with temperature in the range of an average high of 62.1°F (16.7°C) and an average low of 46.6°F (8.1°C). In October, the average high-temperature decreases, from a moderately hot 74.3°F (23.5°C) in September, to an enjoyable 62.1°F (16.7°C). Weather in October »

November, the last month of the autumn, in Denville, is also a frosty month, with temperature in the range of an average high of 49.8°F (9.9°C) and an average low of 36°F (2.2°C). In Denville, the average high-temperature decreases, from an enjoyable 62.1°F (16.7°C) in October, to a chilly 49.8°F (9.9°C). Weather in November »

The first month of the winter, December, is still a cold month in Denville, New Jersey, with average temperature fluctuating between 29.1°F (-1.6°C) and 40.1°F (4.5°C). In December, the average high-temperature decreases, from a chilly 49.8°F (9.9°C) in November, to a cold 40.1°F (4.5°C). Weather in December »

What is the coldest month in Denville?

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

How much does it rain in Denville?

Throughout the year, there are 161.2 rainfall days, and 33.74" (857mm) of precipitation is accumulated.

When does it snow in Denville?

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

How many days does it snow in Denville?

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

When is the lowest UV index in Denville?

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

What is the most humid month in Denville?

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 Denville?

The month with the least sunshine in Denville, New Jersey, is February, with an average of 4.4h of sunshine.

When does it snow the most in Denville?

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 Denville?

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

When it does not snow in Denville?

June through September are months without snowfall.

When are the longest days in Denville?

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

When is the highest UV index in Denville?

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

What is the warmest month in Denville?

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

What month has the most sunshine in Denville?

July has the most sunshine of the year in Denville, New Jersey, with an average of 10.2h of sunshine.

What is the driest month in Denville?

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

What is the wettest month in Denville?

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 Denville?

December has the shortest days of the year in Denville, New Jersey, with an average of 9.3h of daylight.
Average temperature - Denville, NJ
Average pressure - Denville, NJ

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

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).

Average humidity - 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").

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).

Average snowfall - Denville, NJ
Average snowfall days - Denville, 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).

Average daylight / Average sunshine - Denville, 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).

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).

Average UV index - Denville, NJ
Average visibility - Denville, 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).