Weather in Brooklyn, New York for September 2026
Rip Current Statement - See hour by hour.
So far, September 2026 in Brooklyn is slightly warmer than the historical average by 1.9 °F.
The forecast for the next days in Brooklyn predicts temperatures to be around 26 °F, close to the historical average.
In general, the average temperature in Brooklyn at the beginning of September is 26.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.3 °F by the end of September.
Brooklyn experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 186.8 mm.
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Brooklyn Weather September
Temperatures trend during September in Brooklyn
September weather in Brooklyn day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 27° /19° | 3.5 mm | 5 | |
| Sept. 2 |  Partly cloudy | 26° /19° | 0.4 mm | 6 | |
| Sept. 3 | Sunny | 27° /18° | 0.3 mm | 6 | |
| Sept. 4 | Sunny | 28° /20° | 1 mm | 7 | |
| Sept. 5 | Sunny | 27° /21° | 10 mm | 7 | |
| Sept. 6 |  Patchy rain possible | 27° /21° | 17.9 mm | 6 | |
| Sept. 7 | Light rain shower | 25° /17° | 13.7 mm | 6 | |
| Sept. 8 |  Patchy light rain with thunder | 26° /16° | 0.8 mm | 5 | |
| Sept. 9 | Partly cloudy | 26° /18° | 1.3 mm | 6 | |
| Sept. 10 |  Overcast | 32° /23° | 0.9 mm | 6.8 | |
| Sept. 11 | Overcast | 27° /21° | 0.1 mm | 5.4 | |
| Sept. 12 | Sunny | 26° /18° | 0 mm | 6.2 | |
| Sept. 13 | Overcast | 26° /22° | 0.2 mm | 6.1 | |
| Sept. 14 | Overcast | 29° /22° | 0.1 mm | 7 | |
| Sept. 15 | Sunny | 31° /24° | 0 mm | 8 | |
| Sept. 16 | Light rain shower | 34° /23° | 9.8 mm | 8 | |
| Sept. 17 | Sunny | 25° /17° | 0 mm | 7 | |
| Sept. 18 | Overcast | 23° /15° | 2.7 mm | 6 | |
| Sept. 19 | Sunny | 20° /12° | 0 mm | 6 | |
| Sept. 20 | Sunny | 20° /13° | 0 mm | 6 | |
| Sept. 21 | Sunny | 21° /13° | 0 mm | 6 | |
| Sept. 22 | Overcast | 23° /16° | 0 mm | 6 | |
| Sept. 23 | Sunny | 24° /17° | 0 mm | 6 | |
| Sept. 24 | Overcast | 21° /16° | 2.2 mm | 5 | |
| Sept. 25 |  Light rain | 20° /17° | 24.8 mm | 4 | |
| Sept. 26 | Light drizzle | 23° /17° | 11.4 mm | 5 | |
| Sept. 27 | Overcast | 22° /15° | 3.7 mm | 5 | |
| Sept. 28 | Patchy rain possible | 22° /16° | 12.9 mm | 5 | |
| Sept. 29 | Overcast | 20° /15° | 17.5 mm | 4 | |
| Sept. 30 | Light rain shower | 21° /16° | 7 mm | 4 | |
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Brooklyn in September - FAQ
What are the expected maximum and minimum temperatures in Brooklyn during September?
How much rainfall should be expected in Brooklyn during September?
What are the typical wind conditions in Brooklyn during September?
September rainfall patterns in Brooklyn
UV exposure in Brooklyn during September
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