Climate and monthly weather forecast
Fairfield, CT

Share

The climate of Fairfield

Positioned in the northeastern United States, Fairfield, Connecticut manifests a humid subtropical climate, as per the Köppen climate classification, bearing the identifier Cfa. Throughout the calendar, weather parameters reveal a wide spectrum of conditions, ranging from low temperatures in the colder months to a prominent presence of humidity and comparatively higher temperatures during the warmer months.

A contrasting dip and rise trend paints the scene with temperatures, with the mercury dropping to an average low of 26.6°F (-3°C) reaching until 33.3°F (0.7°C) in the heart of winter and ascending to a peak around 81°F (27.2°C) during the pinnacle of summer. Upholding relatively high levels from 72% to 76% the humidity ratio remains fairly consistent year-round.

Rainfall in Fairfield unfurls with a fairly even distribution from 2.48" (63mm) to 4.21" (107mm) with the months of July and December receiving the highest rainfall respectively, alluding to no pronounced dry season. The city is not spared from the winter's snowfall, receiving up to 2.8" (71mm) of snow in the earlier part of the year, primarily from January to April.

The best time to visit Fairfield

Analyzing the climatological data suggests that the prime time to tread the streets of Fairfield would align with the warmer seasons. Months from May to August present itself with maximum daylight, basking the town with anywhere from 14.5 hours to 15.1 hours. Accentuating this, the period from June to August underscores an average peek on the UV Index scale with a level of 6. With temperatures ranging from 64.9°F (18.3°C) to 81°F (27.2°C), these months also offer gentle winds in the region of 6.8mph (10.9km/h) to 7.8mph (12.6km/h).

The worst time to visit Fairfield

The unfavorable time to set foot in Fairfield would coincide with the town's encounter with winter from November to February. During these months, temperatures plunge to chilling low averages from 26.6°F (-3°C) to 41.9°F (5.5°C) while experiencing the least amount of sunshine, merely ranging from 4.8 hours to 5.7 hours per day. Though snowfall is limited in these months, the city is frequently subjected to chilly winds reaching a maximum of 10.2mph (16.4km/h) to 11mph (17.7km/h), adding an extra layer of discomfort to the already severe cold.

Spring weather in Fairfield

Spring welcomes Fairfield with a subtle increase in temperature from 44.2°F (6.8°C) to 64.9°F (18.3°C) on average. During this period, spanning from March to May, the town is doused in an average of 2.91" (74mm) to 3.15" (80mm) of rainfall. The gusts of wind decline to a soothing 10.2mph (16.4km/h) to 7.8mph (12.6km/h), complementing the sprightly season. The daylight extends from 12 hours to 14.5 hours, paving the way for longer days.

Summer weather in Fairfield

Summer bestows an average high temperature between 73.8°F (23.2°C) and 81°F (27.2°C) upon Fairfield. This perch of the year, ranging from June to August, brings warmth to the city, with humidity levels oscillating around 74% to 76%. Despite minimal rainfall, ranging down to 3.11" (79mm) to 3.82" (97mm), there is ample daylight from 14.8 hours to 15.1 hours that ensures a pleasantly sunny day.

Autumn weather in Fairfield

Autumn, demarcated from September to November, defines an inviting transitional period between the hot summer and cold winter, with temperature decreasing gradually from 73°F (22.8°C) to 50.9°F (10.5°C). Rainfall sees a dip to around 2.56" (65mm) in September but escalates up to 3.54" (90mm) by November. While the daylight hours shrink from 12.5 hours to 9.9 hours, the gusty winds gain momentum, picking up speed from 7.8mph (12.6km/h) to 9.9mph (15.9km/h).

Winter weather in Fairfield

Winter in Fairfield is characterized by cold and frosty conditions as temperatures plummet from 41.9°F (5.5°C) to 26.6°F (-3°C). The town receives 2.13" (54mm) to 2.8" (71mm) of snowfall during the start of the year. The daylight fades away to about 9.3 hours to 9.6 hours, while the wind speed consistently remains around 10.5mph (16.9km/h), transforming the town into a chilly winter scene. This period also sees a relatively lower UV Index, with values dropping to 2.

Weather in January

The month of January in Fairfield, Connecticut, welcomes the coldest time of the year, noticeably colder than December and a clear precursor to February. One thing locals get acclimated to during this month is the steady rise in daylight hours from 9.6h to 10.7h, a signal of the transitioning seasons. Weather in January »

Weather in February

Despite the lengthening days in Fairfield, February remains firmly in the grip of winter, with the cold from January persisting but with signs of a slight warmth compared to the previous month. The city's winter landscape is frequently adorned with frost, an indication of the low temperatures still prevalent. Weather in February »

Weather in March

In March, the weather visibly begins to shake off the winter chill. Fairfield, Connecticut, gets a noticeable uptick in temperature, and the snow begins to recede, giving way to increased rain. Daylight hours continue to rise to an average of 12 hours, leading to longer days. Weather in March »

Weather in April

April marks the arrival of Spring in Fairfield, Connecticut, as the frosty grip of winter relaxes and the warmer temperatures of March continue to rise. Evenings are less biting, and the greenery starts to exhibit the vigor of the changing seasons. Weather in April »

Weather in May

Fairfield, Connecticut, fully embraces the call of Spring in May. With the winter chill a distant memory, the city glistens under the warm rays, bringing vibrance and color. Rainfall is common, contributing to the lushness that envelops the environment, awakening the diverse flora. Weather in May »

Weather in June

The beginning of June embodies the start of Summer in Fairfield, Connecticut. The month is marked by long days, vibrant flora, and steadily soaring temperatures. Sun worshippers get their fill as June ushers in the most extended daylight hours of the year, up to 15.1h. Weather in June »

Weather in July

July is the epitome of summer in Fairfield, Connecticut, with sunshine, heat, and longer daylight hours. The warmer weather invites people outside to enjoy the city's parks and beaches. Despite the high temperatures, cool breezes from the Long Island Sound provide respite from the heat. Weather in July »

Weather in August

August in Fairfield, Connecticut, is akin to a slightly milder continuation of July, as the scorching summer heat begins to show signs of cooling off. The days, although still long, start to see a decrease in daylight hours, hinting at the impending end of summer. Weather in August »

Weather in September

The Fall season begins to unfold in September in Fairfield, Connecticut with subtle changes in the city's foliage. The temperature steadily cools down from the summer highs, and the days gradually become shorter. With the transition into fall, local fauna shifts patterns, and the city takes on a slightly less lively but still beautiful complexion. Weather in September »

Weather in October

As the foliage in Fairfield, Connecticut, changes to hues of gold and red, October brings clear signs of the Fall season progressing towards its peak. The season's visual spectacle is complemented by cooler temperatures and shorter days compared to September. Weather in October »

Weather in November

November in Fairfield, Connecticut, is marked by a significant drop in temperature, transitioning from the mildness of October towards the colder winter. The increasingly chilly November winds carry loose leaves away, and fewer daylight hours start to hint at the incoming winter. Weather in November »

Weather in December

December is synonymous with the arrival of winter in Fairfield, Connecticut, with the cold intensifying from the chilly November weather. Light snowfall begins to cover the local landscape, providing the city with a festive, wintery appearance. Weather in December »
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Fairfield?

With average high and low temperatures of 36.1°F (2.3°C) and 26.6°F (-3°C) respectively, January is Fairfield's coldest month.

What is the driest month in Fairfield?

January is the month with the least rainfall in Fairfield, Connecticut. Rain falls for 9.4 days and accumulates 2.48" (63mm) of precipitation.

How much does it rain in Fairfield?

Throughout the year, in Fairfield, there are 170.1 rainfall days, and 37.76" (959mm) of precipitation is accumulated.

When does it snow in Fairfield?

January through April, November and December are months with snowfall.

How many days does it snow in Fairfield?

In Fairfield, Connecticut, during the entire year, snow falls for 24.9 days and aggregates up to 9.41" (239mm) of snow.

When is the lowest UV index in Fairfield?

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

What are the months with the least sunshine in Fairfield?

The months with the least sunshine in Fairfield, Connecticut, are February and December, with an average of 4.8h of sunshine.

When does it snow the most in Fairfield?

March is the month with the most snowfall. Snow falls for 5.3 days and accumulates 2.8" (71mm) of snow.

When is Daylight Saving Time (DST) in Fairfield?

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 are the least humid months in Fairfield?

April and November, with an average relative humidity of 72%, are the least humid months in Fairfield, Connecticut.

What is the most humid month in Fairfield?

The months with the highest humidity in Fairfield are May and June, with an average relative humidity of 76%.

When it does not snow in Fairfield?

May through October are months without snowfall.

When are the longest days in Fairfield?

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

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

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

What is the warmest month in Fairfield?

With average high temperatures of 81°F (27.2°C) and lows of 68.5°F (20.3°C), July is the warmest month.

What month has the most sunshine in Fairfield?

With an average of 10.6h of sunshine, July has the most sunshine of the year.

What is the rainiest month in Fairfield?

December is the month with the most rainfall in Fairfield, Connecticut. Rain falls for 12.7 days and accumulates 4.21" (107mm) of precipitation.

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, CT

Average temperature - Fairfield, CT

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (36.1°F).

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

Average pressure
Fairfield, CT

Average pressure - Fairfield, CT

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed
Fairfield, CT

Average wind speed - Fairfield, CT

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity
Fairfield, CT

Average humidity - Fairfield, CT

The months with the highest relative humidity are May and June (76%).
The months with the lowest relative humidity are April and November (72%).

Average rainfall
Fairfield, CT

Average rainfall - Fairfield, CT

The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is January (2.48").

Average rainfall days
Fairfield, CT

Average rainfall days - Fairfield, CT

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (9.4 days).

Average snowfall
Fairfield, CT

Average snowfall - Fairfield, CT

The month with the highest snowfall is March (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Fairfield, CT

Average snowfall days - Fairfield, CT

The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Fairfield, CT

Average daylight / Average sunshine - Fairfield, CT

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 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

Average sunshine days
Fairfield, CT

Average sunshine days - Fairfield, CT

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (11.2 days).

Average UV index
Fairfield, CT

Average UV index - Fairfield, CT

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, CT

Average visibility - Fairfield, CT

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

Fairfield, Connecticut, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location