Old Saybrook Weather in September

In Old Saybrook, September brings high daytime temperatures around 24°C (75°F), with nights cooling to 14°C (57°F). Expect quite a bit of rainfall this month.

Rainfall in Old Saybrook in September

Rain is expected on roughly 9 days, totalling around 115 mm (4.5 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Old Saybrook in September

Expect highs of 24°C (75°F) in Old Saybrook in September, with nights dropping to around 14°C (57°F). Overall, the month follows a fairly predictable daily temperature pattern. 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 Old Saybrook in September

With approximately 223 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If you prefer enjoying temperate temperatures and rain-free days, May and July typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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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 Old Saybrook's climate page.

Old Saybrook Temperature in September

Min Temperature 14°C (57°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 30%  

Precipitation 115 mm (4.5 in)  

Rainy days 9 days  

Humidity 72% *  

Sunshine 223 hours *  

Percentage Sunshine 60% *  

* Data from: Hartford, the United States of America (58 KM, 36 Miles).

What to Wear in Old Saybrook in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Old Saybrook 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

Camping

6/10

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 Old Saybrook's climate page.

More climate data for Old Saybrook

Temperature Rainfall Sunshine Humidity

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