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Country guide · North America

United States in September

Weather, crowds and prices in United States in September — and where in the country to go.

Ideal
64
Quick answer

A country is rarely uniformly good or bad in a given month. Below is what September looks like across United States, followed by the places that are actually at their best.

Average high
26°
Average low 17°
Crowds
Moderate
57/100
Prices
$$
mid-range
Rainfall
Dry
Warm and comfortable
United States

Where to go in United States in September

Ranked by how September scores at each place on weather, crowds and price.

1 San Francisco, United States San Francisco 22° · $$ · Fog lifts, warmest sunniest days arrive Ideal 2 New York City, United States New York City 24° · $$ · Comfortable air, fashion week energy returns Ideal 3 New Orleans, United States New Orleans 32° · $ · Still hurricane season, storms threaten coast Avoid

United States weather in September

Typical conditions in United States during September, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.

The best time to visit United States

Taken across the whole country, September · June · May tends to give the strongest mix of weather, space and value. Individual destinations shift that window, sometimes by months — the table below is the honest version.

← August All 12 months October →

Frequently asked questions

What is the weather like in United States in September?

Typical conditions in United States during September, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast. Average highs sit around 26°C with lows near 17°C.

Where should you go in United States in September?

San Francisco, New York City, New Orleans.

What is the best month to visit United States?

September, June, May.

Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation.