Weather in Vereinigten Staaten von Amerika in September
Country-wide climate normals across 27 cities in Vereinigten Staaten von Amerika.
How Hot Is Vereinigten Staaten von Amerika in September?
Vereinigten Staaten von Amerika runs hot in September: typical highs of 28°C across most cities, with New York City representative. Regional variation: 21°C to 34°C.
Sunshine in Vereinigten Staaten von Amerika in September
Vereinigten Staaten von Amerika's September brings mixed skies — New York City averages 4.9h of sun, with similar conditions nationwide. Cloudy periods alternate with sunny stretches, and the sun is up between 6:35 am and 7:05 pm. Plan for variability rather than guaranteed sunshine.
Does It Rain In Vereinigten Staaten von Amerika In September?
Vereinigten Staaten von Amerika's September is wet across most regions: 101mm in New York City across 9 days, with rain falling on most days of the month. Coastal and highland regions can see significantly more, while interior regions may stay slightly drier. Sunny stretches are brief and uncommon.
Is Vereinigten Staaten von Amerika Humid In September?
Vereinigten Staaten von Amerika's September is humid — 64% on average in New York City, with similar muggy conditions in most regions. Afternoons feel sticky, especially after rain, and the moisture amplifies warm-day temperatures noticeably. Coastal cities see the highest readings.
Wind In Vereinigten Staaten von Amerika In September
Vereinigten Staaten von Amerika's September has gentle wind — New York City averages 18 kph, and the country tracks similarly. Outdoor activity is comfortable, and afternoon thermals add a pleasant breeze in inland areas.
Cloud Cover In Vereinigten Staaten von Amerika In September
Vereinigten Staaten von Amerika sees mostly cloudy weather through September: New York City averages 52% cloud cover, and the pattern repeats across the country. Bright sun is uncommon; expect a grey, soft-lit feel to most days.