Climate and monthly weather forecast
Newtown, CT

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Climate and monthly weather forecast

The climate of Newtown

Newtown, Connecticut, established in the USA, subscribes to the Köppen climate classification of Cfa. This denomination translates to a Humid subtropical climate with no defined dry season, typically influenced by the Atlantic Ocean's year-round moisture flow.

The overall temperature fluctuation in Newtown reveals a significant contrast in temperature readings from the lowest temperature of 22.6°F (-5.2°C) in January to the highest 82.2°F (27.9°C) in July. Radiating an annual thermal swing typical for a four-season climate, Newtown experiences a gamut of temperatures across the calendar year. Humidity remains relatively constant throughout the year, marginally rising to its peak at 79% in February and retreating to its lowest at 72% in April.

Rainfall follows its rhythm, exhibiting maximum levels from 3.7" (94mm) in July to 2.4" (61mm) in January and September. It's noteworthy that there's wet weather for Newtown all year round, peaking at 18.6 days in July indicating the pronounced element of humidity. Varying experiences with snowfall naturally come with changing seasons, encompassing from 0" (0mm) in June to September to 4.37" (111mm) in February.

Staying true to its definition, Newtown showcases a blend of sunshine and cloud percentages, swinging between 16.3 hours of bright sun in January to 10.1 hours in June. Newtown never fails to keep its attraction alive for sky gazers with changing cloud behavior ranging from 32% cloud coverage in August to a saturated 49% in February and December.

The best time to visit Newtown

Weather preferences might vary for every traveler; however, the period from May to October may be most attractive to the visitors inclined towards amicable temperatures. Specifically, June presents the most balanced package of luscious warmth, with temperature highs of 75.2°F (24°C), low humidity at 76%, abundant sunshine for 15.1 hours a day, and the pleasant treat of occasional rains at 3.31" (84mm). Temperature-friendly days coupled with long hours of daylight can facilitate outdoor activities, making it the best phase to enjoy Newtown's natural and cultural scenes.

The worst time to visit Newtown

The calendar stretch during winter, specifically from December to February, might be challenging for those sensitive to chill. During this period, the town observes lower temperature averages from 22.6°F (-5.2°C) to 36.5°F (2.5°C) and increased snowfall, peaking at 4.37" (111mm) in February. Coupled with shorter daylight hours from 9.2 to 10.6, frequent snow days, and reduced visibility, the winter days can be substantially less welcoming for outdoor recreational activities.

Spring weather in Newtown

Spring weather in Newtown brings a wave of ethereal charm from March to May. Transitioning from the harsh winter, the temperature slithers up from 44.1°F (6.7°C) in March to a pleasing 67.3°F (19.6°C) in May. A subtle elevation in daylight hours from 12 to 14.5 hours imparts a refreshing vibe to the town. Meanwhile, rainfall follows a predictable upsurge from 2.83" (72mm) in March to 3.07" (78mm) in May, crafting a perfect blend of warmth and moisture. Springtime proves the most picturesque in Newtown, making it a perfect time for nature photography.

Summer weather in Newtown

While summer in Newtown runs from June to August, July exhibits the prime of the season with the highest temperature at 82.2°F (27.9°C) and the lowest hits 64.9°F (18.3°C), making it the warmest month. The sunshine duration boils to its summit at 15.1 hours per day in June. The humid subtropical trait becomes prominent with an average rainfall of 3.7" (94mm) making July the wettest month. Although summer brings in the most rain days, it showcases less cloud coverage and higher daylight hours, offering bright, sun-filled days.

Autumn weather in Newtown

The autumn period's tranquil aura washes over Newtown from September to November. With the temperature high receding from 73°F (22.8°C) in September to a mild 48.7°F (9.3°C) in November, the weather becomes invitingly comfortable. The town receives less rainfall fluctuating between 2.4" (61mm) in September and 2.99" (76mm) in November. Decreasing daylight hours from 12.5 to 9.9 add to the charm of crisp, autumn evenings. The mesmerizing fall foliage coupled with temperate climate makes this period exceptionally picturesque.

Winter weather in Newtown

Winter unfurls its cool aura over Newtown from December till February. Temperature highs plunge from 39.6°F (4.2°C) in December to a chilly 33.4°F (0.8°C) in January. Snowfall comes to play, recording its highest at 4.37" (111mm) in February, adding to Newtown's winter charm. Shorter daylight hours limit outdoor activities, but the low winter sun casting long shadows on the snow blankets paints a different kind of charm. Winter in Newtown is perfect for indoor activities and enjoying the snowy landscape.

Weather in January

Expect to bundle up in Newtown, Connecticut during January when it holds the title of the coldest month of the year. With temperatures dipping as low as 22.6°F (-5.2°C), residents experience substantial snowfall reaching 3.5" (89mm). Weather in January »

Weather in February

February in Newtown, Connecticut sees a slight rise in temperature from the previous month, hinting at the gradual transition into spring. The snow continues to fall, albeit at a slower pace with snowfall inching down to 4.37" (111mm). Weather in February »

Weather in March

March, the first month of the spring in Newtown, is a chilly month, with an average temperature ranging between min 30.9°F (-0.6°C) and max 44.1°F (6.7°C). The start of March brings a subtle rise in the average high-temperature, moving from a cold 36.5°F (2.5°C) in February to a chilly 44.1°F (6.7°C). Weather in March »

Weather in April

April in Newtown, Connecticut is characterized by pleasant weather and the continuation of spring's bloom. With the highest recorded rainfall of 3.11" (79mm), this lends to the lush greenery across the city. The extended daylight hours coupled with hearty sunshine provide optimum conditions for outdoor activities. Weather in April »

Weather in May

May brings comfortable warmth to Newtown, Connecticut, thereby heralding the onset of summer. The high temperature peaks at 67.3°F (19.6°C), perfectly balancing between the mildness of spring and the heat of summer. A substantial number of sunlight hours light up the days, paving way for diverse outdoor activities. Weather in May »

Weather in June

Step into the warmth of summer in Newtown, Connecticut during June. With the rise in temperature reaching a high of 75.2°F (24°C), it marks the beginning of the region's summer season. The added daylight hours and the peak sunshine hours of the year brighten the cityscape. Weather in June »

Weather in July

July is the zenith of summer in Newtown, Connecticut. The city records its highest temperatures of the year, soaring up to 82.2°F (27.9°C), with the sun generously in its peak glory. Long days of sunlight underline the summer character, illuminating the thriving bustling city. Weather in July »

Weather in August

August in Newtown, Connecticut sees a slight dip in temperatures from the height of summer, with the mercury dropping to 80.2°F (26.8°C). The length of daylight hours begins to decrease, bidding farewell to the long sunlit evenings of mid-summer. Weather in August »

Weather in September

With the arrival of September, Newtown, Connecticut starts to reflect the stunning changes of autumn. Despite this, the temperature still hovers in the mild range with a peak of 73°F (22.8°C). As the city shifts from summer to fall, daylight hours reduce further, casting longer shadows that add to Newtown's autumn charm. Weather in September »

Weather in October

October in Newtown, Connecticut showcases a beautiful panorama of rich autumn colors, as the city is bathed in shades of red, orange, and gold. The noticeable drop in temperature to 61.2°F (16.2°C) makes the air crisp, adding to the feel of autumn. Weather in October »

Weather in November

In November, Newtown, Connecticut prepares for winter as the last vestiges of autumn fade. The fairly significant drop in temperature to 48.7°F (9.3°C), signals the imminent advent of winter. The cityscape transforms from the rich hues of fall to the stark, bare beauty of an approaching winter. Weather in November »

Weather in December

As the curtain falls on the year, winter takes the spotlight in Newtown, Connecticut in December, featuring temperature lows of 29.3°F (-1.5°C). The city witnesses an uptick in snowfall, amounting to 3.58" (91mm), adding a festive charm to the season. 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 Newtown?
January, known for its average high temperature of 33.4°F (0.8°C) and an average low temperature of 22.6°F (-5.2°C), is the coldest month.
What is the driest month in Newtown?
January and September are months with the least rain in Newtown, Connecticut, when the rain falls for 9.1 days and typically aggregates up to 2.4" (61mm) of rain.
How much does it rain in Newtown?
In Newtown, during the entire year, the rain falls for 169.7 days and collects up to 36.93" (938mm) of precipitation.
When does it snow in Newtown?
January through May, October through December are months with snowfall in Newtown.
How many days does it snow in Newtown?
Throughout the year, there are 34.5 snowfall days, and 17.01" (432mm) of snow is accumulated.
When is the lowest UV index in Newtown?
The months with the lowest UV index in Newtown, Connecticut, are January through March, November and December, with an average maximum UV index of 2.
What is the most humid month in Newtown?
With an average relative humidity of 79%, February is the most humid month.
When does it snow the most in Newtown?
February is the month with the most snowfall in Newtown, Connecticut. Snow falls for 9.5 days and accumulates 4.37" (111mm) of snow.
What is the month with the least sunshine in Newtown?
February has the least sunshine of the year in Newtown, with an average of 4.6h of sunshine.
When is Daylight Saving Time (DST) in Newtown?
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 Newtown?
With an average relative humidity of 72%, April is the least humid month.
When it does not snow in Newtown?
In Newtown, snow does not fall in June through September.
When are the longest days in Newtown?
June has the longest days of the year in Newtown, with an average of 15h and 6min of daylight.
When is the highest UV index in Newtown?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What are the warmest months in Newtown?
July, with average temperatures reaching a high of 82.2°F (27.9°C) and a low of 64.9°F (18.3°C), is the warmest month.
What are the months with the most sunshine in Newtown?
The months with the most sunshine in Newtown, Connecticut, are July and August, with an average of 10.3h of sunshine.
What is the wettest month in Newtown?
December is the month with the most rainfall in Newtown, Connecticut. Rain falls for 12 days and accumulates 4.02" (102mm) of precipitation.
What is the month with the shortest days in Newtown?
The month with the shortest days in Newtown is December, with an average of 9h and 12min of daylight.
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Average temperature - Newtown, CT
Average temperature
Newtown, CT

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (33.4°F).

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure - Newtown, CT
Average pressure
Newtown, 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 - Newtown, CT
Average wind speed
Newtown, CT

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity - Newtown, CT
Average humidity
Newtown, CT

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (72%).

Average rainfall - Newtown, CT
Average rainfall
Newtown, CT

The wettest month (with the highest rainfall) is December (4.02").
The driest months (with the least rainfall) are January and September (2.4").

Average rainfall days - Newtown, CT
Average rainfall days
Newtown, CT

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is January (9.1 days).

Average snowfall - Newtown, CT
Average snowfall
Newtown, CT

The month with the highest snowfall is February (4.37").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days - Newtown, CT
Average snowfall days
Newtown, CT

The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Newtown, CT
Average daylight / Average sunshine
Newtown, 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 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days - Newtown, CT
Average sunshine days
Newtown, CT

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.1 days).

Average UV index - Newtown, CT
Average UV index
Newtown, 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 cloud cover - Newtown, CT
Average cloud cover
Newtown, CT

The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility - Newtown, CT
Average visibility
Newtown, CT

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

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