Best time to visit United States in September
Yes — September is one of the best months to visit United States, with a country-average travel-comfort score of 82.6/100.
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Weather in United States in September
Typical weather across United States in September: average high 28.3°C, low 17.7°C, about 79.7 mm of rain, and 10.3 hours of sunshine per day. Among United States's cities, San Francisco has the best weather in September (score 99/100, September climate details).
| Metric | United States avg | Best city (San Francisco) |
|---|---|---|
| Travel-comfort score | 82.6 | 99 |
| High / Low | 28.3° / 17.7° | 20.4° / 14.4° |
| Precipitation | 79.7 mm | 18.9 mm |
| Sunshine/day | 10.3 | 11.3 |
Is September recommended?
September is one of the best months to visit United States. For the full month-by-month ranking across every city, see the best-time-to-visit guide for United States.
When to visit United States in other months
January February March April May June July August September October November December