Monthly weather forecast and climate
Allendale, NJ

January, like December, in Allendale, New Jersey, is another cold winter month, with average temperature ranging between min 22.8°F (-5.1°C) and max 35.2°F (1.8°C). With an average high-temperature of 35.2°F (1.8°C) and an average low-temperature of 22.8°F (-5.1°C), January is the coldest month. Weather in January »

February, the last month of the winter, in Allendale, is another cold month, with average temperature varying between 38.3°F (3.5°C) and 24.3°F (-4.3°C). In February, the average high-temperature is practically the same as in January - a still wintry 38.3°F (3.5°C). Weather in February »

The first month of the spring, March, is a chilly month in Allendale, New Jersey, with average temperature varying between 46.6°F (8.1°C) and 32.2°F (0.1°C). In Allendale, the average high-temperature in March slightly increases, from a wintry 38.3°F (3.5°C) in February, to a chilly 46.6°F (8.1°C). Weather in March »

April is a moderate spring month in Allendale, New Jersey, with average temperature ranging between min 42.3°F (5.7°C) and max 58.6°F (14.8°C). In April, the average high-temperature rises, from a frosty 46.6°F (8.1°C) in March, to a mild 58.6°F (14.8°C). Weather in April »

May, the last month of the spring, in Allendale, is a pleasant month, with temperature in the range of an average low of 51.8°F (11°C) and an average high of 69.8°F (21°C). In Allendale, the average high-temperature rises, from a mild 58.6°F (14.8°C) in April, to an agreeable 69.8°F (21°C). Weather in May »

June, the first month of the summer, in Allendale, is a moderately hot month, with average temperature fluctuating between 78.4°F (25.8°C) and 60.1°F (15.6°C). In Allendale, the average high-temperature slightly increases, from a pleasant 69.8°F (21°C) in May, to a moderately hot 78.4°F (25.8°C). Weather in June »

July, like June, in Allendale, New Jersey, is a moderately hot summer month, with average temperature fluctuating between 84.7°F (29.3°C) and 66.6°F (19.2°C). With an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 66.6°F (19.2°C), July is the warmest month. In July, the average heat index is appraised at a tropical 92.5°F (33.6°C). Weather in July »

August, the last month of the summer, in Allendale, is another warm month, with temperature in the range of an average low of 65.7°F (18.7°C) and an average high of 82.9°F (28.3°C). In Allendale, the average high-temperature in August is almost the same as in July - a still warm 82.9°F (28.3°C). Weather in August »

September, the first month of the autumn, in Allendale, is also a moderately hot month, with average temperature varying between 58.3°F (14.6°C) and 75.2°F (24°C). In September, the average high-temperature marginally drops, from a moderately hot 82.9°F (28.3°C) in August, to a still warm 75.2°F (24°C). Weather in September »

October, the same as September, is another enjoyable autumn month in Allendale, New Jersey, with average temperature varying between 62.8°F (17.1°C) and 48.4°F (9.1°C). In October, the average high-temperature drops, from a moderately hot 75.2°F (24°C) in September, to an enjoyable 62.8°F (17.1°C). Weather in October »

November, the last month of the autumn, in Allendale, is another cool month, with average temperature fluctuating between 50.7°F (10.4°C) and 37°F (2.8°C). In November, the average high-temperature decreases, from an enjoyable 62.8°F (17.1°C) in October, to a fresh 50.7°F (10.4°C). Weather in November »

The first month of the winter, December, is still a cold month in Allendale, New Jersey, with temperature in the range of an average low of 30.4°F (-0.9°C) and an average high of 40.8°F (4.9°C). In Allendale, the average high-temperature drops, from a fresh 50.7°F (10.4°C) in November, to a wintry 40.8°F (4.9°C). Weather in December »

What is the coldest month in Allendale?

January is the coldest month in Allendale, New Jersey, with an average high-temperature of 35.2°F (1.8°C) and an average low-temperature of 22.8°F (-5.1°C).

How much does it rain in Allendale?

Throughout the year, in Allendale, New Jersey, there are 157.3 rainfall days, and 32.72" (831mm) of precipitation is accumulated.

When does it snow in Allendale?

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

How much does it snow in Allendale?

Throughout the year, in Allendale, New Jersey, there are 28 snowfall days, and 13.82" (351mm) of snow is accumulated.

When is the lowest UV index in Allendale?

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

What are the most humid months in Allendale?

Months with the highest humidity in Allendale are February and December, with an average relative humidity of 78%.

What is the snowiest month in Allendale?

February is the month with the most snowfall. Snow falls for 7.9 days and accumulates 4.09" (104mm) of snow.

What is the month with the least sunshine in Allendale?

February has the least sunshine of the year in Allendale, with an average of 4.5h of sunshine.

When it does not snow in Allendale?

May through September are months without snowfall in Allendale.

When are the longest days in Allendale?

June has the longest days of the year in Allendale, New Jersey, with an average of 15.1h of daylight.

What is the month with the highest UV index in Allendale?

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

What is the warmest month in Allendale?

July is the warmest month, with an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 66.6°F (19.2°C).

What month has the most sunshine in Allendale?

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

What is the least humid month in Allendale?

The least humid month in Allendale, New Jersey, is August, with an average relative humidity of 70%.

What is the driest month in Allendale?

September is the month with the least rainfall in Allendale, New Jersey. Rain falls for 12.9 days and accumulates 1.89" (48mm) of precipitation.

What is the wettest month in Allendale?

December is the month with the most rainfall. Rain falls for 10.6 days and accumulates 3.58" (91mm) of precipitation.

What is the month with the shortest days in Allendale?

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

The month with the highest atmospheric pressure is November (30.1").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed - Allendale, NJ

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity - Allendale, NJ
Average rainfall - Allendale, NJ

The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days - Allendale, NJ

Months with the highest number of rainy days are May and July (16.8 days).
The month with the least rainy days is January (8.4 days).

Average snowfall - Allendale, NJ
Average snowfall days - Allendale, NJ

The month with the highest number of snowfall days is February (7.9 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine - Allendale, 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: 4.5h).

Average sunshine days - Allendale, NJ

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (11.5 days).

Average UV index - Allendale, NJ
Average visibility - Allendale, NJ

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