Norwalk Weather in September

With daytime temperatures of 25°C (77°F) and nighttime lows of 14°C (57°F), September in Norwalk brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 94 mm (3.7 in) falls on average.

Rainfall in Norwalk in September

Rain is expected on roughly 10 days, totalling around 94 mm (3.7 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Norwalk in September

Norwalk has perfect weather in September, with days reaching 25°C (77°F) and nights cooling to 14°C (57°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights drop to around 14°C (57°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Norwalk in September

The days are predominantly sunny, with an estimated total of around 218 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

If your ideal day consists of dry skies and pleasant temperatures, May and September typically offer the best circumstances for Norwalk.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Norwalk's climate page.

Norwalk Temperature in September

Min Temperature 14°C (57°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 32%  

Precipitation 94 mm (3.7 in)  

Rainy days 10 days  

Humidity 68% *  

Sunshine 218 hours *  

Percentage Sunshine 59% *  

* Data from: New York City, the United States of America (56 KM, 35 Miles).

What to Wear in Norwalk in September

For Norwalk in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Norwalk in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Norwalk's climate page.

More climate data for Norwalk

Temperature Rainfall Sunshine Humidity

See the full Norwalk climate overview or explore weather in the United States of America.