Climate and monthly weather forecast
Ansonia, CT

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The climate of Ansonia

Ansonia, Connecticut, situated in the USA, observes a Köppen climate classification of Cfa, indicating a humid subtropical climate, without a dry season. The weather overall shows a varied mix of temperatures, humidity, rainfall, and snowfall. Interpretation of data implies different weather conditions experienced throughout the year.

Temperature highs from January to December range from 34.7°F (1.5°C) to 81.9°F (27.7°C) with the warmest period noted in July. Counterpart, temperature lows depict a different sequence, undulating between 24.6°F (-4.1°C) in January and 66.7°F (19.3°C) in July. Variations in temperature reflect the typical climate pattern of this region.

As far as humidity is concerned, it remains fairly stable, wavering between 72% to 77%, which signifies a consistently saturated atmosphere. Rainfall volumes diverge from 2.24" (57mm) in September to 4.06" (103mm) in December. Simultaneously, the number of rainfall days extends from 9.4 days in January to 18 days in July, signifying substantial rain during the summer period.

Unique weather patterns surface in the form of snowfall, with values ranging from 0" (0mm) in May to September to 3.23" (82mm) in February. Alongside, the number of snowfall days extends from 0 days in May to September to 7.8 days in February, shedding light on the cold and wintery conditions during February.

The best time to visit Ansonia

Given the observed weather patterns, the most agreeable time to visit Ansonia prevails between May and October. During this six-month window, weather parameters signify agreeable conditions for exploring Ansonia's offerings. Temperatures escalate upto 81.9°F (27.7°C), making it conducive for outdoor activities, and rainfall subsides to 2.24" (57mm) in September. More sunlight, about 15.1 hours in June, and a reduced cloud cover percentage around 30-34% from July-September, enhance the outdoor experience.

The worst time to visit Ansonia

The least favorable time to plan a trip to Ansonia comes out to be the winter season, extending from November to February. The temperatures plunge to the lowest range from 24.6°F (-4.1°C) to 49.8°F (9.9°C) and the snowfall peaks to 3.23" (82mm) in February. The shorter daylight hours of around 9.6 hours in January and increased cloud cover of 48% in January and February contribute to the dreary weather conditions and limit outdoor activities.

Spring weather in Ansonia

Transitioning into the season of spring, Ansonia welcomes warmer temperatures ranging from 44.2°F (6.8°C) to 66.7°F (19.3°C) from March to May. Rainfall increases from 2.91" (74mm) in March to 2.83" (72mm) in May, supporting the prime blooming season. Predominantly clear skies and extended daylight hours up to 14.5 in May enrich the beauty of the spring season.

Summer weather in Ansonia

The summer season June through August, adds to the vitality of Ansonia. Temperatures peak at 81.9°F (27.7°C) in July allowing for continued outdoor excursions. Rainfall values rise from 3.07" (78mm) to 3.43" (87mm). Extended hours of sunshine upto 15.1 hours and minimum cloud cover adds sparkle to the summer season.

Autumn weather in Ansonia

Autumn in Ansonia blankets the city with temperatures from 73°F (22.8°C) in September to 49.8°F (9.9°C) in November. The rainfall varies from 2.24" (57mm) in September to 3.5" (89mm) in October with declining daylight hours to about 9.9 hours in November.

Winter weather in Ansonia

In contrast, the winter months December through February, are marked with cold temperatures defaulting from 40.3°F (4.6°C) in December to 34.7°F (1.5°C) in January. Snowfall seems inevitable with maximum accumulation of 3.23" (82mm) in February. Short daylight hours and increased cloud cover form regular winter attributes in Ansonia.

Weather in January

January in Ansonia, Connecticut experiences the harshness of winter, bringing with it cooler temperatures. Indoor activities are favored as the outside temperatures range from a low of 24.6°F (-4.1°C) to a high of 34.7°F (1.5°C). Weather in January »

Weather in February

The last month of winters, February, sees a gradual increase in temperature but continues to maintain similar weather patterns as January. The city continues to endure the cold while awaiting the arrival of spring. Temperatures rise slightly, fluctuating between 25.2°F (-3.8°C) and 37°F (2.8°C). Weather in February »

Weather in March

Marking the onset of spring, March sees a significant change in Ansonia's weather. The snow starts to retreat, and temperatures begin to show a considerable climb from the frigid winters. The temperature variance, from 32°F (0°C) to 44.2°F (6.8°C), suggests a noteworthy shift away from the cold. Weather in March »

Weather in April

April ushers in a full-blown spring season in Ansonia. With the melting snow and burgeoning buds, the city shakes off the last traces of winter and embraces milder, more pleasant temperatures. At this time, temperatures range between 41.5°F (5.3°C) and 55.4°F (13°C), providing a striking contrast to the preceding chilly season. Weather in April »

Weather in May

Ansonia experiences a mild weather during May, marking the gateway to the warm summer months. Days are considerably longer, and the mercury continues to rise, paving the way for outdoor activities. The temperatures during this month vary from 51.4°F (10.8°C) to 66.7°F (19.3°C), serving a classic spring atmosphere. Weather in May »

Weather in June

June brings the onset of the heated summer season in Ansonia. The city experiences a notable increase in both temperatures and daylight hours, making outdoor events an appealing option. From a temperate 59.5°F (15.3°C) to a warm 74.8°F (23.8°C), the city experiences unmistakable signs of summer. Weather in June »

Weather in July

July is the peak of summer months in Ansonia. The city is all abuzz with activities, and the weather becomes noticeably hot. The climate reaches its warmest point, with temperatures spinning from 66.7°F (19.3°C) to 81.9°F (27.7°C). Weather in July »

Weather in August

August is the month where summer starts to depart while maintaining enough warmth to enjoy outdoor gatherings. With temperatures gently dipping, the city prepares for the arrival of cooler and crispier climates. Temperatures, from 65.5°F (18.6°C) to 80.2°F (26.8°C), still bask in the lingering summer heat. Weather in August »

Weather in September

September brings the charm of fall and the transition from summer's heat to the cooler temperatures of autumn. The city is adorned in beautiful hues, and the harsh sunlight begins to mellow. The temperatures during this month sway between 59.4°F (15.2°C) and 73°F (22.8°C). Weather in September »

Weather in October

October is predominantly autumnal for the city of Ansonia. Cooler temperatures become the norm, and leaves begin to fall. A marked reduction in temperatures can be noticed with readings fluctuating between 50°F (10°C) and 61.7°F (16.5°C). Weather in October »

Weather in November

November in Ansonia is finest display of fall transitioning into winter. The month is often marked by significant changes in the weather as the colder temperatures of December start approaching. A cool climate nowadays prevails, with temperatures swaying from 39.2°F (4°C) to 49.8°F (9.9°C). Weather in November »

Weather in December

Wrapping up the year, Ansonia enters the winter season fully in December. The temperatures drop, and the city reenters the chilly weather phase it started the year with. As the temperatures oscillate between 31.3°F (-0.4°C) and 40.3°F (4.6°C), it is apparent that winter's cut and dry cold has returned. Weather in December »
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Ansonia?

Ansonia notes the coldest temperatures in January, with a average high of 34.7°F (1.5°C) and a low of 24.6°F (-4.1°C).

How many days does it rain in Ansonia?

In Ansonia, during the entire year, the rain falls for 169.1 days and collects up to 36.26" (921mm) of precipitation.

When does it snow in Ansonia?

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

How many days does it snow in Ansonia?

Throughout the year, in Ansonia, Connecticut, there are 27.3 snowfall days, and 11.42" (290mm) of snow is accumulated.

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

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 in Ansonia?

February is the most humid month in Ansonia, with an average relative humidity of 77%.

When does it snow the most in Ansonia?

February is the month with the most snowfall in Ansonia, Connecticut. Snow falls for 7.8 days and accumulates 3.23" (82mm) of snow.

What is the month with the least sunshine in Ansonia?

With an average of 4.7h of sunshine, February has the least sunshine of the year.

When is Daylight Saving Time (DST) in Ansonia?

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 in Ansonia?

April is the least humid month in Ansonia, Connecticut, with an average relative humidity of 72%.

When it does not snow in Ansonia?

May through October are months without snowfall in Ansonia, Connecticut.

When are the longest days in Ansonia?

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

When is the highest UV index in Ansonia?

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

What is the warmest month in Ansonia?

July is the warmest month of the year, registering average temperatures as high as 81.9°F (27.7°C) and as low as 66.7°F (19.3°C).

What are the months with the most sunshine in Ansonia?

July and August, with an average of 10.5h of sunshine, are months with the most sunshine.

What is the driest month in Ansonia?

September is the month with the least rainfall in Ansonia. Rain falls for 13.1 days and accumulates 2.24" (57mm) of precipitation.

What is the wettest month in Ansonia?

December is the month with the most rainfall in Ansonia. Rain falls for 12.8 days and accumulates 4.06" (103mm) of precipitation.

What is the month with the shortest days in Ansonia?

The month with the shortest days in Ansonia is December, with an average of 9h and 12min of daylight.

Average temperature
Ansonia, CT

Average temperature - Ansonia, CT

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (34.7°F).

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

Average pressure
Ansonia, CT

Average pressure - Ansonia, 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
Ansonia, CT

Average wind speed - Ansonia, CT

The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

Average humidity
Ansonia, CT

Average humidity - Ansonia, CT

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is April (72%).

Average rainfall
Ansonia, CT

Average rainfall - Ansonia, CT

The wettest month (with the highest rainfall) is December (4.06").
The driest month (with the least rainfall) is September (2.24").

Average rainfall days
Ansonia, CT

Average rainfall days - Ansonia, CT

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (9.4 days).

Average snowfall
Ansonia, CT

Average snowfall - Ansonia, CT

The month with the highest snowfall is February (3.23").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Ansonia, CT

Average snowfall days - Ansonia, CT

The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight / Average sunshine
Ansonia, CT

Average daylight / Average sunshine - Ansonia, 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 12min).

The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days
Ansonia, CT

Average sunshine days - Ansonia, CT

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.3 days).

Average UV index
Ansonia, CT

Average UV index - Ansonia, 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
Ansonia, CT

Average visibility - Ansonia, 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).

Ansonia, Connecticut, USA

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