Seymour

Naugatuck Valley Planning Region, Connecticut, United States

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Current Weather

20°

Clear

Feels Like: 19°

Min: 13°

Max: 24°

The next few hours will be clear, with tomorrow reaching 25°C and dropping to 19°C. The coming days will be partly cloudy from afternoon until night.

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Hourly Forecast

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Today
Tomorrow

Daylight Hours

06:40

Sunrise

18:52

Sunset

12 hours 12 minutes of sunlight today

Moon

Waxing Crescent

12:34

Moonrise

20:54

Moonset

Daily Forecast

Wednesday

13°
24°

Today

18°
25°

Friday

16°
24°

Saturday

12°
19°

Sunday

14°
17°

Monday

13°
18°

Tuesday

12°
17°

Wednesday

11°
18°

Thursday

12°
20°

Friday

13°
17°

Air Quality Data Available

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UV Index

No protection needed
0 Low
Low Extreme

Humidity

91% Very Humid
Low High

Weather in Seymour tomorrow, September 17, 2026

Seymour looks cloudy on September 17, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. Expect a grey start, with morning cloud around 100% by 10:00. Outdoor plans early on should not rely on bright skies.

Expect highs of 25°C and cooler readings close to 18°C. Relative humidity sits between 74% and 98%, reaching its peak around 02:00. Airflow remains manageable, reaching about 3.7 km/h around 15:00.

Expect persistent cloud later on, with amounts around 79% by 17:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 14.3 km on average, though it can drop toward 12.5 km in thicker cloud or showers. Sunrise is at 06:41 and sunset at 18:51, giving 12 hours 9 minutes of sunlight today.

In short, cloud leads the story in Seymour on September 17, 2026; expect limited sun and a peak around 25°C.

Frequently asked questions about weather in Seymour

How warm does it get in Seymour?

The warmest month in Seymour is July, with average high temperatures of 29°C. The average temperature during this period is around 24°C.

How cold does it get in Seymour?

The coldest month in Seymour is January, with average low temperatures of -3°C. The average temperature during this period is around 0°C.

What is the wettest time of year in Seymour?

The wettest month in Seymour is July, with an average of 125mm of precipitation.

What is the driest time of year in Seymour?

The driest month in Seymour is November, with an average of 86mm of precipitation.

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