Norwalk Weather in September

With daytime temperatures of 30°C (86°F) and nighttime lows of 18°C (64°F), September in Norwalk brings high temperatures during the day. The excellent weather makes it an appealing time to visit.

Rainfall in Norwalk in September

You can typically expect a single day of rain this month, averaging around 3.3 mm (0.1 in). If rain does fall, it tends to be very light and barely worth getting out an umbrella for.

Temperature in Norwalk in September

The excellent temperature in Norwalk in September makes it a solid month to visit, with 30°C (86°F) during the day and 18°C (64°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights cool down to 18°C (64°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Norwalk in September

The days are predominantly sunny, with an estimated total of around 278 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

September in Norwalk has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.

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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 18°C (64°F)  

Max Temperature 30°C (86°F)  

Chance of Rain 3%  

Precipitation 3.3 mm (0.1 in)  

Rainy days a single day  

Humidity 67% *  

Sunshine 278 hours *  

Percentage Sunshine 75% *  

* Data from: Los Angeles, the United States of America (29 KM, 18 Miles).

What to Wear in Norwalk in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Norwalk in September

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

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

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.