Brooklyn weather in September
Long-run climate averages for Brooklyn, NY in September, plus what the forecast models say for the days ahead.
In September, Brooklyn averages 75°F by day and 59°F at night. The wettest month is usually July.
September in Brooklyn averages a daytime high of 75°F and an overnight low of 59°F, which reads as warm for this part of the world. Across the whole year Brooklyn sees roughly 49 inches of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like - for that, see the live Brooklyn forecast with every model compared and how much they currently agree.
Brooklyn weather by month
what to expect in Brooklyn through the year, 1991-2020 averagesHere is Brooklyn's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Brooklyn by season.
Bottom line: over the last 30 days the European model has been the most accurate forecast for Brooklyn, scoring 93/100 on our CheckWeather Score, ahead of the American at 83. See the full US accuracy scoreboard for exactly how every model is tested.
Common questions
How warm is Brooklyn in September?
Is September a good time to visit Brooklyn?
Does it rain a lot in Brooklyn in September?
Climate averages from ERA5 reanalysis. Model accuracy re-scored over a rolling 30 days. Page updated .