New York City weather in September
Long-run climate averages for New York City, NY in September, plus what the forecast models say for the days ahead.
In September, New York City averages 76°F by day and 59°F at night. The wettest month is usually July.
September in New York City averages a daytime high of 76°F and an overnight low of 59°F, which reads as warm for this part of the world. Across the whole year New York City sees roughly 47 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 New York City forecast with every model compared and how much they currently agree.
New York City weather by month
what to expect in New York City through the year, 1991-2020 averagesHere is New York City'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 New York City by season.
Bottom line: over the last 30 days the European model has been the most accurate forecast for New York City, scoring 96/100 on our CheckWeather Score, ahead of the American at 80. See the full US accuracy scoreboard for exactly how every model is tested.
Common questions
How warm is New York City in September?
Is September a good time to visit New York City?
Does it rain a lot in New York City in September?
Climate averages from ERA5 reanalysis. Model accuracy re-scored over a rolling 30 days. Page updated .