Ronkonkoma weather in September (New York State, United States of America)

How does the September weather in Ronkonkoma compare to other months? Check out this detailed guide to the month’s weather conditions.

Temperatures

The weather in Ronkonkoma during September is typically perfect, with high temperatures and moderate rainfall. The temperature during the day can rise to approximately 24°C. At night, it falls to around 15°C.

Precipitation

Ronkonkoma in September usually receives moderate rainfall, averaging around 88 mm for the month. When we look at the climate data from the last 30 years, you can expect around 9 days of rain.

Average sunshine

There are approximately 218 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit. May, July and September generally stand out with the best circumstances. While January, February, March and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Ronkonkoma climate page with graphs.

 

Ronkonkoma, monthly averages in September

Min Temperature 15°C  

Max Temperature 24°C  

Chance of Rain 30%  

Precipitation 88 mm  

Rainy days 9 days  

Humidity 68% *  

Sunshine 218 hours *  

Percentage Sunshine 59% *  

Data from: New York City, the United States of America (65 KM, 40 Miles).

Where to go in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Ronkonkoma, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Interested in more climate information?

This site provides you with all the information you need about the climate in Ronkonkoma.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.