Rockville Centre Weather in September

Thinking of visiting Rockville Centre in September? Expect high temperatures reaching 25°C (77°F) during the day, dropping to 17°C (63°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Rockville Centre in September

You can expect rain on around 9 days based on historical patterns, with 83 mm (3.3 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Rockville Centre in September

The temperature in Rockville Centre in September is excellent. Daytime highs reach 25°C (77°F), with nights dropping to 17°C (63°F). Overall, the month follows a fairly predictable daily temperature pattern. With lows of 17°C (63°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Rockville Centre in September

The month enjoys around 218 hours of sunshine, creating mostly sunny days with good weather conditions.

Wind Speed in Rockville Centre in September

September has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.

Average water temperature in September

At 20°C (68°F), the water is pleasant for swimming. Most people find this range ideal, cool enough to be refreshing, warm enough to stay in comfortably.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Rockville Centre.

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 Rockville Centre's climate page.

Rockville Centre Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 25°C (77°F)  

Water Temperature 20°C (68°F) *  

Chance of Rain 28%  

Precipitation 83 mm (3.3 in)  

Rainy days 9 days  

Humidity 68% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 218 hours *  

Percentage Sunshine 59% *  

* Data from: New York City, the United States of America (24 KM, 15 Miles).

What to Wear in Rockville Centre in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. The water temperature sits at about 20°C (68°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Rockville Centre 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 Rockville Centre's climate page.

More climate data for Rockville Centre

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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