Old Lyme weather in September (Connecticut, United States of America)

Will it be rainy or sunny in Old Lyme this September? Our page offers a comprehensive look at the weather you can expect this month.

Temperatures

The month of September in Old Lyme typically brings high temperatures and high rainfall. During the day, temperatures can climb to about 24°C. At night, they may fall to a cooler 14°C.

Precipitation

Old Lyme in September usually receives high rainfall, averaging around 113 mm for the month. Typically around 9 days days of rainfall are expected.

Average sunshine

The days are predominantly sunny, with an estimated total of around 223 hours of sunshine. These sun-filled days are perfect for spending time outside. Whether it's playing sports, visiting a park, or going for a bike ride.

Should you favor a climate that's both dry and comfortably warm May and July typically offer the most agreeable circumstances. On the other hand, January, February, March and December tend to be characterized by conditions that may not be as optimal.

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

 

Old Lyme, monthly averages in September

Min Temperature 14°C  

Max Temperature 24°C  

Chance of Rain 31%  

Precipitation 113 mm  

Rainy days 9 days  

Humidity 72% *  

Sunshine 223 hours *  

Percentage Sunshine 60% *  

Data from: Hartford, the United States of America (57 KM, 36 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 Old Lyme, 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

Camping

6/10

Outdoor sports

9/10

Interested in more climate information?

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

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.