New York Weather in September
Typical September in New York: days around 76°F, nights around 62°F, and the month cools about 7°F from early to late — based on 30-year climate normals (NOAA, 1991–2020), day by day below.
76°Faverage high
62°Faverage low
−7°Fearly vs late September
14°Fday-to-night swing
Early, mid and late September in New York
The month split in three — the part of the answer a 30-row table hides.
| Part of September | Avg high | Avg low |
|---|---|---|
| Early September (Sep 1–10) | 80°F | 66°F |
| Mid September (Sep 11–20) | 76°F | 62°F |
| Late September (Sep 21–30) | 73°F | 59°F |
Daylight in New York during September
How much light the day gives you — useful for planning what you can still do after work.
13 h 05 minon Sep 1
11 h 48 minon Sep 30
−1 h 17 minlost across September
Day-by-day September normals for New York
Long-term daily averages (NOAA 1991–2020) — climate, not a live forecast. For the next 16 days, use the live forecast.
| Day | Avg high | Avg low |
|---|---|---|
| Sep 1 | 81°F | 67°F |
| Sep 2 | 81°F | 66°F |
| Sep 3 | 80°F | 66°F |
| Sep 4 | 80°F | 66°F |
| Sep 5 | 80°F | 66°F |
| Sep 6 | 80°F | 65°F |
| Sep 7 | 79°F | 65°F |
| Sep 8 | 79°F | 65°F |
| Sep 9 | 79°F | 65°F |
| Sep 10 | 78°F | 64°F |
| Sep 11 | 78°F | 64°F |
| Sep 12 | 78°F | 64°F |
| Sep 13 | 77°F | 63°F |
| Sep 14 | 77°F | 63°F |
| Sep 15 | 77°F | 63°F |
| Sep 16 | 76°F | 62°F |
| Sep 17 | 76°F | 62°F |
| Sep 18 | 76°F | 62°F |
| Sep 19 | 75°F | 61°F |
| Sep 20 | 75°F | 61°F |
| Sep 21 | 74°F | 61°F |
| Sep 22 | 74°F | 60°F |
| Sep 23 | 74°F | 60°F |
| Sep 24 | 73°F | 60°F |
| Sep 25 | 73°F | 59°F |
| Sep 26 | 72°F | 59°F |
| Sep 27 | 72°F | 58°F |
| Sep 28 | 72°F | 58°F |
| Sep 29 | 71°F | 58°F |
| Sep 30 | 71°F | 57°F |
September in New York through the years
Real photos taken in New York in September by Weathershot app users — different years, same month.
More months: October · November · December · January · Live New York forecast
September elsewhere: Atlanta weather in September · Chicago weather in September · Denver weather in September · Miami weather in September · Phoenix weather in September · Seattle weather in September
Weathershot
The September photos above were taken with Weathershot — it stamps the real weather onto your picture. Snap one in New York and it could land on this page.
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Climate normals: NOAA 1991–2020 (GHCND). Photos: Weathershot community, taken on location. © Weathershot · Byss Mobile