New York Weather in September
- Latitude: 40.7306°
- Longitude: -73.9866°
- Country: United States of America
Are you planning a holiday with hopefully nice weather in New York in September 2026? Here you can find all information about the weather in New York in September:
- Overview: New York Weather and Climate in September
- New York weather by month
- New York weather in September // weather averages
- Current temperature and weather forecast for New York
Climate for New York in September
The warmest day of September in New York is 04.09, with 26.7°C | 80.1°F, while the coldest day is 30.09, dropping to 13.5°C | 56.3°F. Early in the month, highs average 26°C | 78.8°F, and lows are 18°C | 64.4°F. Mid-month values show highs around 24°C | 75.2°F, lows at 16.2°C | 61.2°F. By month’s end, average highs are 22.5°C | 72.5°F, with lows near 14.8°C | 58.6°F. The hottest 10-day period is 1-10, with highs at 26°C | 78.8°F. The coldest stretch is 21-30, with average lows of 14.8°C | 58.6°F.
During September, the overall average temperature in New York is 19.9°C | 67.8°F. Water temperatures begin around 22.4°C | 72.3°F, rise to 21.5°C | 70.7°F, and reach 20.4°C | 68.7°F in the final third of the month.
In New York, the amount of sunshine during September ranges from roughly 6 hours to 9 hours per day. The sunniest day is 05.09, reaching 9 hours, while the day with the least sun is 27.09, with only 6 hours. Early in the month, sunshine averages 8 hours; mid-month it rises to 8 hours; and at month’s end it averages around 7 hours. The brightest 10-day stretch occurs between 1-10, with daily sunshine at 8 hours. The least sunny period is between 21-30, with an average of just 7 hours.
In September, precipitation in New York fluctuates between daily totals of 0.98/0.04 mm/in and 8.77/0.35 mm/in. The wettest day is 03.09 with 8.77/0.35 mm/in, and the driest is 12.09 with just 0.98/0.04 mm/in. Rainfall averages 3.10/0.12 mm/in over the first ten days, with 3 days above 1 mm. From days 11–20, the average is 1.70/0.07 mm/in, with 1 rainy days. Toward month’s end, precipitation averages 2.70/0.11 mm/in, with 2 wet days. The 10-day period with the highest rainfall is 1-10, with 3.10/0.12 mm/in. The driest stretch occurs between 11-20, totaling only 0.98/0.04 mm/in.
In New York, September features humidity ranging from 75% to 79%. Humidity peaks on 29.09 (79%) and is lowest on 06.09 (75%). Values average 76% in the opening days, increase to 76% mid-month, and settle at 78% at month’s end. The most humid 10-day block is 21-30, the driest is 1-10.
New York weather by month
| Avg. Temperature °C (°F) | Min. Temperature °C (°F) | Max. Temperature °C (°F) | Precipitation / Rainfall mm (in) | Humidity (%) | Rainy days (d) | avg. Sun hours (hours) | |
|---|---|---|---|---|---|---|---|
| January |
-1 (30.3) |
-4.3 (24.2) |
3.4 (38.1) |
86 (3.4) |
66% | 7 | 6.0 |
| February |
0 (32) |
-3.9 (25.1) |
4.9 (40.8) |
78 (3.1) |
64% | 6 | 7.0 |
| March |
4.1 (39.4) |
0.1 (32.1) |
9.3 (48.7) |
106 (4.2) |
65% | 7 | 8.0 |
| April |
10.4 (50.8) |
6 (42.8) |
15.9 (60.6) |
92 (3.6) |
65% | 8 | 9.0 |
| May |
16 (60.9) |
11.8 (53.2) |
21.2 (70.1) |
92 (3.6) |
68% | 8 | 9.0 |
| June |
21.3 (70.3) |
17.2 (62.9) |
26 (78.8) |
103 (4.1) |
70% | 8 | 10.0 |
| July |
24.5 (76) |
20.3 (68.5) |
29 (84.2) |
105 (4.1) |
66% | 8 | 11.0 |
| August |
23.6 (74.5) |
19.9 (67.7) |
28 (82.4) |
106 (4.2) |
69% | 8 | 10.0 |
| September |
20.1 (68.1) |
16.4 (61.6) |
24.3 (75.7) |
95 (3.7) |
71% | 7 | 8.0 |
| October |
13.7 (56.6) |
10.2 (50.4) |
17.9 (64.2) |
97 (3.8) |
71% | 7 | 7.0 |
| November |
7.7 (45.8) |
4.4 (39.9) |
11.9 (53.3) |
76 (3) |
71% | 6 | 7.0 |
| December |
2.5 (36.5) |
-0.5 (31) |
6.4 (43.5) |
103 (4.1) |
70% | 8 | 6.0 |
| January | February | March | April | May | June | July | August | September | October | November | December | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg. Temperature °C (°F) |
-1 °C (30.3) °F |
0 °C (32) °F |
4.1 °C (39.4) °F |
10.4 °C (50.8) °F |
16 °C (60.9) °F |
21.3 °C (70.3) °F |
24.5 °C (76) °F |
23.6 °C (74.5) °F |
20.1 °C (68.1) °F |
13.7 °C (56.6) °F |
7.7 °C (45.8) °F |
2.5 °C (36.5) °F |
| Min. Temperature °C (°F) |
-4.3 °C (24.2) °F |
-3.9 °C (25.1) °F |
0.1 °C (32.1) °F |
6 °C (42.8) °F |
11.8 °C (53.2) °F |
17.2 °C (62.9) °F |
20.3 °C (68.5) °F |
19.9 °C (67.7) °F |
16.4 °C (61.6) °F |
10.2 °C (50.4) °F |
4.4 °C (39.9) °F |
-0.5 °C (31) °F |
| Max. Temperature °C (°F) |
3.4 °C (38.1) °F |
4.9 °C (40.8) °F |
9.3 °C (48.7) °F |
15.9 °C (60.6) °F |
21.2 °C (70.1) °F |
26 °C (78.8) °F |
29 °C (84.2) °F |
28 °C (82.4) °F |
24.3 °C (75.7) °F |
17.9 °C (64.2) °F |
11.9 °C (53.3) °F |
6.4 °C (43.5) °F |
| Precipitation / Rainfall mm (in) |
86 (3) |
78 (3) |
106 (4) |
92 (3) |
92 (3) |
103 (4) |
105 (4) |
106 (4) |
95 (3) |
97 (3) |
76 (2) |
103 (4) |
| Humidity(%) | 66% | 64% | 65% | 65% | 68% | 70% | 66% | 69% | 71% | 71% | 71% | 70% |
| Rainy days (d) | 7 | 6 | 7 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 6 | 7 |
| avg. Sun hours (hours) | 6.2 | 7.2 | 7.6 | 8.5 | 8.8 | 10.1 | 10.8 | 9.6 | 7.8 | 6.8 | 6.5 | 5.7 |
Data: 1991 - 2021 Min. Temperature °C (°F), Max. Temperature °C (°F), Precipitation / Rainfall mm (in), Humidity, Rainy days. Data: 1999 - 2019: avg. Sun hours
🌡️ Temperature for New York in September
What’s the hottest day recorded in New York during September? |
The highest average temperature during September in New York is on 04.09, with 26.7°C | 80.1°F. |
|---|---|
In September, what day does New York typically reach its lowest temperature? |
The coldest point of the month is reached on 30.09, with 13.5°C | 56.3°F. |
What temperature progression can be seen in New York throughout September? |
In the first part of the month, average highs reach 26°C | 78.8°F and lows settle near 18°C | 64.4°F. During the middle third, highs are around 24°C | 75.2°F, and lows fall to 16.2°C | 61.2°F. By the end of the month, highs average 22.5°C | 72.5°F and lows reach 14.8°C | 58.6°F. |
Which 10-day portion of September delivers the warmest conditions to New York? |
From 1-10, the 10-day period with the highest average highs reaches 26°C | 78.8°F. |
Which 10-day portion of September delivers the coldest conditions to New York? |
Lows average 14.8°C | 58.6°F during the coldest stretch between 21-30. |
Water Temperature for New York in September
What’s the day with the highest water temperature in New York during September? |
The peak water temperature day of the month is 01.09, with an average temperature of 22.6°C | 72.7°F. |
|---|---|
What’s the day with the coldest water temperature in New York during September? |
The coldest water temperature day is 30.09, with an average of 20°C | 67.9°F. |
What changes in water temperature can be observed in New York during September? |
The sea is warmest at the beginning of the month, averaging 22.4°C | 72.3°F. It cools slightly to 21.5°C | 70.7°F mid-month and stabilizes around 20.4°C | 68.7°F in the final third. |
Which 10-day portion of September delivers the warmest water conditions in New York? |
The warmest 10-day stretch for water temperature occurs between 1-10, averaging 22.4°C | 72.3°F. |
Which 10-day portion of September delivers the coldest water conditions in New York? |
Water temperatures average 20.4°C | 68.7°F during the coldest stretch between 21-30. |
☀️ Sunshine Hours for New York in September
What’s the day with the most sun recorded in New York during September? |
The day with the most sunshine is 05.09, averaging 9 hours. |
|---|---|
What’s the day with the lowest sunshine total in New York during September? |
The day with the fewest sunshine hours is 27.09, at just 6 hours. |
How do daylight hours associated with sunshine shift across September in New York? |
The average sunshine duration is 8 hours during the first ten days, 8 hours mid-month, and 7 hours in the last third of the month. |
Which 10-day portion of September delivers the most sunshine to New York? |
The sunniest 10-day stretch falls between 1-10, with average daily sunshine of 8 hours. |
Which 10-day portion of September delivers the least sunshine to New York? |
Between 21-30, daily sunshine averages as low as 7 hours. |
New York weather and climate for further months
New York weather in September // weather averages
| Temperature (°C) | (°F) | Temperature max. (°C) | (°F) | Temperature min. (°C) | (°F) | Water Temperature (°C) | (°F) | Precipitation / Rainfall (mm) | (inch.) | |
|---|---|---|---|---|---|
| 1. September | 22 °C | 72 °F | 26 °C | 80 °F | 19 °C | 66 °F | 23 °C | 73 °F | 1.1 mm | 0.0 inch. |
| 2. September | 22 °C | 71 °F | 26 °C | 79 °F | 18 °C | 64 °F | 23 °C | 73 °F | 1.5 mm | 0.1 inch. |
| 3. September | 22 °C | 72 °F | 26 °C | 80 °F | 18 °C | 65 °F | 23 °C | 73 °F | 8.8 mm | 0.3 inch. |
| 4. September | 22 °C | 72 °F | 27 °C | 80 °F | 19 °C | 66 °F | 23 °C | 73 °F | 3.0 mm | 0.1 inch. |
| 5. September | 22 °C | 72 °F | 26 °C | 79 °F | 18 °C | 65 °F | 23 °C | 73 °F | 1.7 mm | 0.1 inch. |
| 6. September | 21 °C | 70 °F | 26 °C | 79 °F | 18 °C | 64 °F | 22 °C | 72 °F | 1.6 mm | 0.1 inch. |
| 7. September | 21 °C | 70 °F | 26 °C | 79 °F | 17 °C | 63 °F | 22 °C | 72 °F | 1.4 mm | 0.1 inch. |
| 8. September | 22 °C | 71 °F | 26 °C | 79 °F | 18 °C | 64 °F | 22 °C | 72 °F | 7.9 mm | 0.3 inch. |
| 9. September | 21 °C | 70 °F | 25 °C | 78 °F | 18 °C | 64 °F | 22 °C | 72 °F | 2.3 mm | 0.1 inch. |
| 10. September | 21 °C | 70 °F | 25 °C | 77 °F | 18 °C | 64 °F | 22 °C | 72 °F | 1.2 mm | 0.0 inch. |
| 11. September | 21 °C | 69 °F | 25 °C | 77 °F | 17 °C | 63 °F | 22 °C | 72 °F | 1.0 mm | 0.0 inch. |
| 12. September | 21 °C | 69 °F | 25 °C | 76 °F | 17 °C | 63 °F | 22 °C | 72 °F | 1.0 mm | 0.0 inch. |
| 13. September | 20 °C | 69 °F | 25 °C | 77 °F | 17 °C | 62 °F | 22 °C | 71 °F | 1.7 mm | 0.1 inch. |
| 14. September | 20 °C | 69 °F | 25 °C | 77 °F | 17 °C | 62 °F | 22 °C | 71 °F | 1.3 mm | 0.0 inch. |
| 15. September | 21 °C | 69 °F | 25 °C | 77 °F | 17 °C | 63 °F | 22 °C | 71 °F | 1.2 mm | 0.0 inch. |
| 16. September | 20 °C | 67 °F | 24 °C | 75 °F | 16 °C | 61 °F | 22 °C | 71 °F | 1.5 mm | 0.1 inch. |
| 17. September | 19 °C | 66 °F | 23 °C | 73 °F | 15 °C | 60 °F | 21 °C | 70 °F | 1.5 mm | 0.1 inch. |
| 18. September | 19 °C | 66 °F | 23 °C | 74 °F | 15 °C | 59 °F | 21 °C | 70 °F | 2.0 mm | 0.1 inch. |
| 19. September | 19 °C | 66 °F | 23 °C | 74 °F | 15 °C | 59 °F | 21 °C | 70 °F | 3.3 mm | 0.1 inch. |
| 20. September | 19 °C | 66 °F | 23 °C | 73 °F | 15 °C | 59 °F | 21 °C | 70 °F | 2.3 mm | 0.1 inch. |
| 21. September | 19 °C | 65 °F | 23 °C | 74 °F | 15 °C | 58 °F | 21 °C | 70 °F | 2.0 mm | 0.1 inch. |
| 22. September | 19 °C | 66 °F | 23 °C | 74 °F | 16 °C | 60 °F | 21 °C | 69 °F | 1.8 mm | 0.1 inch. |
| 23. September | 19 °C | 67 °F | 24 °C | 75 °F | 16 °C | 60 °F | 21 °C | 69 °F | 6.2 mm | 0.2 inch. |
| 24. September | 19 °C | 66 °F | 23 °C | 74 °F | 15 °C | 58 °F | 21 °C | 69 °F | 2.1 mm | 0.1 inch. |
| 25. September | 18 °C | 65 °F | 23 °C | 73 °F | 15 °C | 58 °F | 20 °C | 69 °F | 2.4 mm | 0.1 inch. |
| 26. September | 18 °C | 65 °F | 22 °C | 72 °F | 15 °C | 58 °F | 20 °C | 69 °F | 2.2 mm | 0.1 inch. |
| 27. September | 18 °C | 65 °F | 23 °C | 73 °F | 15 °C | 59 °F | 20 °C | 68 °F | 3.0 mm | 0.1 inch. |
| 28. September | 19 °C | 66 °F | 23 °C | 73 °F | 15 °C | 60 °F | 20 °C | 68 °F | 1.7 mm | 0.1 inch. |
| 29. September | 18 °C | 64 °F | 21 °C | 71 °F | 15 °C | 59 °F | 20 °C | 68 °F | 2.6 mm | 0.1 inch. |
| 30. September | 17 °C | 62 °F | 20 °C | 67 °F | 14 °C | 56 °F | 20 °C | 68 °F | 2.5 mm | 0.1 inch. |
💧 Humidity for New York in September
On what date in September is New York at its most humid? |
29.09 is the most moisture-laden day of the month, averaging 79%. |
|---|---|
On what date in September is New York at its driest based on relative humidity? |
The lowest average humidity, 75%, is recorded on 06.09. |
What variation in humidity can be observed during September in New York? |
During the first ten days of the month, the average humidity is 76%. Mid-month, it rises to 76%, and by month’s end, it reaches 78%. |
What’s the most humid 10-day phase of September in New York? |
The highest 10-day humidity average, 78%, occurs during the period from 21-30. |
Which 10-day window in September is considered the driest based on humidity in New York? |
The lowest 10-day average for humidity is seen between 1-10, measuring just 76%. |
🌧️ Rainfall for New York in September
What’s the wettest day on record in New York during September? |
Rainfall peaks on 03.09, with an average measurement of 8.77/0.35 mm/in. |
|---|---|
What’s the day with the lowest rain total in New York during September? |
The least rainy day occurs on 12.09, with only 0.98/0.04 mm/in. |
How do rainfall amounts vary from week to week in September in New York? |
Rainfall in the first ten days averages 3.10/0.12 mm/in, occurring over 3 days. In the middle of the month, daily precipitation averages 1.70/0.07 mm/in, with 1 rainy days. During the final third, rainfall drops to 2.70/0.11 mm/in, with only 2 wet days observed. |
Which 10-day portion of September delivers the highest rain total in New York? |
The highest average precipitation over any 10-day period falls between 1-10, totaling 3.10/0.12 mm/in. |
What 10-day period in September is the most rain-free in New York? |
The driest 10-day period occurs between 11-20, averaging a mere 0.98/0.04 mm/in of rain. |
✈️ Airport close to New York
The closest Airports of New York are: LaGuardia Airport (LGA) 10.84km,Newark Liberty International Airport (EWR) 16.85km,John F. Kennedy International Airport (JFK) 19.39km
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