Riverhead Weather in September

September in Riverhead brings high temperatures, with daytime highs of 24°C (75°F) and nights around 14°C (57°F). Quite a bit of rainfall is expected, around 89 mm (3.5 in), so pack an umbrella.

Rainfall in Riverhead in September

Based on our climate data of the past 30 years, about 9 days of rain are anticipated, with 89 mm (3.5 in) on average. 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 Riverhead in September

If you're visiting Riverhead in September, expect perfect temperatures with highs of 24°C (75°F) and overnight lows of 14°C (57°F). This kind of day-to-night contrast is typical for this time of year. With lows of 14°C (57°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.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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• January
• February
• March
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• May
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• 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 Riverhead's climate page.

Riverhead Temperature in September

Min Temperature 14°C (57°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 31%  

Precipitation 89 mm (3.5 in)  

Rainy days 9 days  

What to Wear in Riverhead in September

For Riverhead in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.

What To Do in Riverhead in September

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

Cycling

9/10

Walking

9/10

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 Riverhead's climate page.

More climate data for Riverhead

Temperature Rainfall

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