New York vs Washington DC

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, New York edges ahead as the better destination in September. New York offers 9 hours of daily sunshine with only 9 rain days, while Washington DC sees 9 sunshine hours and 10 rain days.

New York sits in the comfortable travel range at 24°C. Washington DC is also comfortable at 26°C.

For travelers who prioritize dry weather, New York is the stronger choice in September.

New York reaches an average high of 24°C (75°F) and drops to 16°C (61°F) at night during September. The daily temperature range is 8°C, meaning moderate variation throughout the day.

Washington DC averages 26°C (79°F) for the high and 17°C (63°F) for the low, with a daily range of 9°C. The 2°C difference is noticeable but not dramatic.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.

New York receives approximately 98 mm of rainfall across 9 rain days during September. You can expect rain roughly every other day.

Washington DC sees 116 mm over 10 rain days. That makes New York the drier option by 1 rain day and 18 mm of total precipitation.

Both cities share similar humidity levels at 65%.