Brooklyn is slipping into classic late‑September weather, where warm days clash with lingering summer moisture. Tonight the borough will stay partly cloudy, with temperatures hanging around 58°F at JFK and humidity hovering just above 80%. Light northeast breezes at 3 mph keep the air from feeling completely still, while the barometer holds steady at 30.17 inches, promising clear visibility for anyone stepping out after dark.

Today’s Conditions and Tonight’s Outlook

Daylight hours on Tuesday, September 23, will see the mercury climb to about 80°F, a solid push into the upper‑70s for the region. The sky will become increasingly cloud‑laden as the afternoon progresses, setting the stage for isolated showers. Even though rain chances are modest, the humidity—peaking at 85%—will make the heat feel sticky.

As evening rolls in, cloud cover thickens and a thunderstorm becomes the most likely scenario for Tuesday night. The storm’s timing aligns with the typical sea‑breeze front that often sneaks inland from the Atlantic, and residents should expect brief bursts of lightning and gusts up to 20 mph as south‑southeast winds pick up.

Air‑quality monitors are flashing a warning: pollutant levels are high enough to be unhealthy for people with respiratory sensitivities. Those who experience shortness of breath, throat irritation, or eye discomfort are advised to limit outdoor activity until the next day’s forecast improves.

Mid‑Week Outlook and Weekend Relief

Wednesday continues the humid trend, with temperatures remaining in the high 70s to low 80s. Spotty showers are possible, especially during the late afternoon as the lingering moisture meets cooler air aloft. By early Thursday morning, a brief shower and a thunderstorm are expected, again fueled by the same sea‑breeze dynamics.

Friday’s forecast is a bit more varied. A couple of showers may roll through during the day, after which clouds begin to break apart, offering a glimpse of sunshine before the weekend. Saturday looks the most promising: mainly partly‑cloudy skies, a solitary shower at most, and a warm high that stays in the mid‑70s. Sunday through Tuesday of the following week should finally deliver the clear, less humid conditions that many New Yorkers are craving, with plenty of sunshine and comfortable daytime highs.

Below is a quick snapshot of the key weather elements for the next few days:

• Tuesday: High 80°F, humid, isolated afternoon showers, thunderstorm possible at night.
• Wednesday: High 78°F, humid, spotty showers in the afternoon.
• Thursday: High 77°F, humid, shower with thunderstorm.
• Friday: High 75°F, clouds breaking, possible evening showers.
• Saturday: High 74°F, partly cloudy, minimal rain chance.

The current Brooklyn weather forecast also includes a rip‑current advisory for the coastal edges of the borough, effective from 6:00 AM EDT on September 22 through 7:00 PM EDT on September 23. Swimmers and beachgoers should stay out of the water during this window, as strong currents can pose serious dangers.

All told, the coming days present a classic transition period for the New York City area. Warm, humid air is giving way to cooler, drier patterns that will become more pronounced as October approaches. Keep an eye on local air‑quality reports and the rip‑current warning if you plan to spend time outdoors or at the beach. Stay tuned for updates as the forecast evolves.