Trenton Weather in September

September in Trenton typically sees daytime highs of 21°C (70°F) and nighttime lows of 10°C (50°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in Trenton in September

You can typically expect 11 days of rain this month, averaging around 96 mm (3.8 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Trenton in September

Trenton in September has perfect weather. Days reach 21°C (70°F) and nights cool to 10°C (50°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. At 10°C (50°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

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

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• January
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• October
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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 Trenton's climate page.

Trenton Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 21°C (70°F)  

Chance of Rain 35%  

Precipitation 96 mm (3.8 in)  

Rainy days 11 days  

What to Wear in Trenton in September

For Trenton 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 Trenton 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 Trenton's climate page.

More climate data for Trenton

Temperature Rainfall

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