Monthly weather forecast and climate
Westfield, NJ

January, the same as December, is another cold winter month in Westfield, New Jersey, with temperature in the range of an average low of 23.9°F (-4.5°C) and an average high of 36°F (2.2°C). With an average high-temperature of 36°F (2.2°C) and an average low-temperature of 23.9°F (-4.5°C), January is the coldest month. Weather in January »

The last month of the winter, February, is another cold month in Westfield, New Jersey, with average temperature varying between 39.2°F (4°C) and 25.7°F (-3.5°C). In February, the average high-temperature is essentially the same as in January - a still wintry 39.2°F (4°C). Weather in February »

March, the first month of the spring, in Westfield, is a chilly month, with average temperature ranging between max 47.3°F (8.5°C) and min 32.9°F (0.5°C). In March, the average high-temperature marginally rises, from a wintry 39.2°F (4°C) in February, to a chilly 47.3°F (8.5°C). Weather in March »

April in Westfield, New Jersey, is a moderate spring month, with temperature in the range of an average high of 59°F (15°C) and an average low of 43.3°F (6.3°C). In April, the average high-temperature rises, from a chilly 47.3°F (8.5°C) in March, to a mild 59°F (15°C). Weather in April »

The last month of the spring, May, is an agreeable month in Westfield, New Jersey, with average temperature varying between 69.3°F (20.7°C) and 52.9°F (11.6°C). In Westfield, the average high-temperature rises, from a moderate 59°F (15°C) in April, to a pleasant 69.3°F (20.7°C). Weather in May »

June, the first month of the summer, in Westfield, is a moderately hot month, with average temperature ranging between max 77.5°F (25.3°C) and min 60.6°F (15.9°C). In Westfield, the average high-temperature marginally rises, from a pleasant 69.3°F (20.7°C) in May, to a moderately hot 77.5°F (25.3°C). Weather in June »

July, the same as June, is a moderately hot summer month in Westfield, New Jersey, with temperature in the range of an average low of 67.5°F (19.7°C) and an average high of 84.2°F (29°C). The warmest month is July, with an average high-temperature of 84.2°F (29°C) and an average low-temperature of 67.5°F (19.7°C). The average heat index is estimated at a tropical 92.3°F (33.5°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Westfield, New Jersey, with average temperature varying between 66.2°F (19°C) and 82°F (27.8°C). In Westfield, New Jersey, the average high-temperature in August is relatively the same as in July - a still moderately hot 82°F (27.8°C). Weather in August »

The first month of the autumn, September, is still a warm month in Westfield, New Jersey, with average temperature ranging between min 59.4°F (15.2°C) and max 75.4°F (24.1°C). In September, the average high-temperature marginally drops, from 82°F (27.8°C) in August, to a still moderately hot 75.4°F (24.1°C). Weather in September »

October, the same as September, is another enjoyable autumn month in Westfield, New Jersey, with average temperature ranging between min 49.1°F (9.5°C) and max 63.1°F (17.3°C). In October, the average high-temperature decreases, from a moderately hot 75.4°F (24.1°C) in September, to a comfortable 63.1°F (17.3°C). Weather in October »

November, the last month of the autumn, in Westfield, is also a fresh month, with average temperature ranging between max 51.1°F (10.6°C) and min 38.1°F (3.4°C). In November, the average high-temperature decreases, from an enjoyable 63.1°F (17.3°C) in October, to a cool 51.1°F (10.6°C). Weather in November »

The first month of the winter, December, is also a wintry month in Westfield, New Jersey, with temperature in the range of an average high of 42.3°F (5.7°C) and an average low of 31.1°F (-0.5°C). In December, the average high-temperature marginally drops, from a cool 51.1°F (10.6°C) in November, to a cold 42.3°F (5.7°C). Weather in December »

What is the coldest month in Westfield?

With an average high-temperature of 36°F (2.2°C) and an average low-temperature of 23.9°F (-4.5°C), January is the coldest month.

How much does it rain in Westfield?

Throughout the year, in Westfield, New Jersey, there are 160.7 rainfall days, and 30.12" (765mm) of precipitation is accumulated.

When does it snow in Westfield?

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

How much does it snow in Westfield?

Throughout the year, there are 25.4 snowfall days, and 10.31" (262mm) of snow is accumulated.

What are the months with the lowest UV index in Westfield?

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 in Westfield?

February, October and December, with an average relative humidity of 78%, are most humid months in Westfield.

What is the month with the least sunshine in Westfield?

February has the least sunshine of the year in Westfield, with an average of 4.6h of sunshine.

What is the snowiest month in Westfield?

The month with the most snowfall is March when snow falls for 5 days and typically aggregates up to 3.23" (82mm) of snow.

What are the least humid months in Westfield?

Months with the lowest humidity in Westfield, New Jersey, are April and August, with an average relative humidity of 73%.

When it does not snow in Westfield?

June through September are months without snowfall.

When are the longest days in Westfield?

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

When is the highest UV index in Westfield?

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

What is the warmest month in Westfield?

July is the warmest month, with an average high-temperature of 84.2°F (29°C) and an average low-temperature of 67.5°F (19.7°C).

What month has the most sunshine in Westfield?

With an average of 10.5h of sunshine, July has the most sunshine of the year in Westfield.

What is the driest month in Westfield?

The month with the least rainfall in Westfield, New Jersey, is September when the rain falls for 12.9 days and typically collects 1.69" (43mm) of precipitation.

What is the rainiest month in Westfield?

The month with the most rainfall in Westfield is December when the rain falls for 11.5 days and typically aggregates up to 3.19" (81mm) of precipitation.

What is the month with the shortest days in Westfield?

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

The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity - Westfield, NJ

Months with the highest relative humidity are February, October and December (78%).
Months with the lowest relative humidity are April and August (73%).

Average rainfall - Westfield, NJ

The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (1.69").

Average rainfall days - Westfield, NJ

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (9.5 days).

Average snowfall - Westfield, NJ
Average snowfall days - Westfield, NJ

Months with the highest number of snowfall days are January and February (7.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Westfield, 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: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average sunshine days - Westfield, NJ

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is June (11.4 days).

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