Climate and monthly weather forecast
Fairfield, NJ

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Weather in January

January, the same as December, is another cold winter month in Fairfield, New Jersey, with temperature in the range of an average low of 22.6°F (-5.2°C) and an average high of 34.9°F (1.6°C). Fairfield's coldest weather arrives in January, when temperatures average a high of 34.9°F (1.6°C) and a low of 22.6°F (-5.2°C). Weather in January »

Weather in February

The last month of the winter, February, is also an icy month in Fairfield, New Jersey, with temperature in the range of an average high of 38.3°F (3.5°C) and an average low of 24.4°F (-4.2°C). With the start of February, Fairfield measures an average high-temperature of a still icy 38.3°F (3.5°C), not significantly differing from January's 34.9°F (1.6°C). Weather in February »

Weather in March

March, the first month of the spring in Fairfield, is a frosty month, with temperature in the range of an average low of 32°F (0°C) and an average high of 46°F (7.8°C). March's arrival coincides with a subtle temperature rise, moving from February's cold 38.3°F (3.5°C) to a chilly 46°F (7.8°C). Weather in March »

Weather in April

April is a moderate spring month in Fairfield, New Jersey, with an average temperature ranging between min 42.3°F (5.7°C) and max 58.5°F (14.7°C). As Fairfield transitions into April, the average high-temperature shows a change, moving from a chilly 46°F (7.8°C) in March to a moderate 58.5°F (14.7°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Fairfield, New Jersey, with temperature in the range of an average high of 69.1°F (20.6°C) and an average low of 51.8°F (11°C). As Fairfield welcomes May, the average high-temperature sees a rise, transitioning from a mild 58.5°F (14.7°C) in April to an agreeable 69.1°F (20.6°C). Weather in May »

Weather in June

June, the first month of the summer in Fairfield, is a moderately hot month, with an average temperature fluctuating between 59.9°F (15.5°C) and 77.5°F (25.3°C). Observing a slight rise in June, the average high-temperature shifts from May's pleasant 69.1°F (20.6°C) to a warm 77.5°F (25.3°C). Weather in June »

Weather in July

July, like June, in Fairfield, New Jersey, is another warm summer month, with temperature in the range of an average high of 83.8°F (28.8°C) and an average low of 65.8°F (18.8°C). The warmest period tends to be July, when average temperatures fluctuate between a high of 83.8°F (28.8°C) and a low of 65.8°F (18.8°C). During July, the heat index is calculated to be a tropical 91.4°F (33°C). Weather in July »

Weather in August

August, the last month of the summer in Fairfield, is another warm month, with an average temperature ranging between max 82°F (27.8°C) and min 64.9°F (18.3°C). August brings an average high-temperature of a still warm 82°F (27.8°C), showing a slight difference from July's 83.8°F (28.8°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Fairfield, New Jersey, with an average temperature varying between 58.1°F (14.5°C) and 74.7°F (23.7°C). The start of September signals a gentle decrease in the average high-temperature, transitioning from 82°F (27.8°C) in August to a still warm 74.7°F (23.7°C). Weather in September »

Weather in October

October, like September, in Fairfield, New Jersey, is another enjoyable autumn month, with an average temperature ranging between max 62.2°F (16.8°C) and min 48.2°F (9°C). Fairfield in October demonstrates a small temperature transition, adjusting from an average high of a warm 74.7°F (23.7°C) in September to an enjoyable 62.2°F (16.8°C). Weather in October »

Weather in November

November, the last month of the autumn in Fairfield, is also a fresh month, with an average temperature varying between 50.5°F (10.3°C) and 37°F (2.8°C). The arrival of November corresponds with a shift in temperature, down from an enjoyable 62.2°F (16.8°C) in October to a cool 50.5°F (10.3°C). Weather in November »

Weather in December

December, the first month of the winter in Fairfield, is also a wintry month, with an average temperature varying between 40.8°F (4.9°C) and 30.4°F (-0.9°C). Fairfield's progression into December includes a drop in the average high-temperature, from a cool 50.5°F (10.3°C) in November to a cold 40.8°F (4.9°C). Weather in December »
Updated: Jun 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in Fairfield?

January tends to be the coldest month, with temperatures averaging a daily high of 34.9°F (1.6°C) and a low of 22.6°F (-5.2°C).

What is the driest month?

The month with the least rainfall is January, when the rain falls for 7.8 days and typically collects 1.57" (40mm) of precipitation.

How many days does it rain?

Throughout the year, there are 158 rainfall days, and 27.4" (696mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through May, November and December.

How much does it snow?

In Fairfield, during the entire year, snow falls for 24.3 days and aggregates up to 9.96" (253mm) 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 is the most humid month?

February and December, with an average relative humidity of 79%, are most humid months.

What is the month with the least sunshine?

With an average of 4.6h of sunshine, February has the least sunshine of the year.

When does it snow the most?

The month with the most snowfall is March, when snow falls for 5 days and typically aggregates up to 3.58" (91mm) of snow.

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?

The months with the lowest humidity are April and August, with an average relative humidity of 73%.

When it does not snow?

In Fairfield, snow does not fall in June through October.

When are the longest days?

With an average of 15h and 6min of daylight, June has the longest days of the year.

What are the months with the highest UV index?

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

What is the hottest time of year in Fairfield?

Fairfield's warmest weather arrives in July, when temperatures average a high of 83.8°F (28.8°C) and a low of 65.8°F (18.8°C).

What is the rainiest month?

The month with the most rainfall is July, when the rain falls for 17.8 days and typically aggregates up to 3.15" (80mm) of precipitation.

What month has the most sunshine?

With an average of 10.4h of sunshine, July has the most sunshine of the year.

What is the month with the shortest days in Fairfield?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

Average temperature
Fairfield, NJ

Average temperature - Fairfield, NJ

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.9°F).

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure
Fairfield, NJ

Average pressure - Fairfield, 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
Fairfield, NJ

Average wind speed - Fairfield, NJ

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity
Fairfield, NJ

Average humidity - Fairfield, NJ

The months with the highest relative humidity are February and December (79%).
The months with the lowest relative humidity are April and August (73%).

Average rainfall
Fairfield, NJ

Average rainfall - Fairfield, NJ

The wettest month (with the highest rainfall) is July (3.15").
The driest month (with the least rainfall) is January (1.57").

Average rainfall days
Fairfield, NJ

Average rainfall days - Fairfield, NJ

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.8 days).

Average snowfall
Fairfield, NJ

Average snowfall - Fairfield, NJ

The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days
Fairfield, NJ

Average snowfall days - Fairfield, NJ

The month with the highest number of snowfall days is February (7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight / Average sunshine
Fairfield, NJ

Average daylight / Average sunshine - Fairfield, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days
Fairfield, NJ

Average sunshine days - Fairfield, NJ

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (10.7 days).

Average UV index
Fairfield, NJ

Average UV index - Fairfield, 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).

Average visibility
Fairfield, NJ

Average visibility - Fairfield, NJ

The 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).

Fairfield, New Jersey, USA

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