Your Ultimate NJ Weekend Weather Guide: Sun, Showers, and Sweet September Days!

Get ready, New Jersey! The much-anticipated weekend of September 2025 is almost upon us, and Mother Nature has a bit of everything planned for the Garden State. From lingering summer warmth to hints of crisp autumn air, residents can expect a dynamic few days perfect for a variety of activities – just be sure to keep an eye on the sky!

Kicking off our weekend on Friday, expect a generally pleasant day across most of New Jersey.

Temperatures will likely hover in the comfortable mid-70s, making it an ideal day for outdoor lunches or an early evening stroll. While sunshine will dominate for much of the day, there's a slight chance of isolated, pop-up showers, especially in the afternoon, so a light umbrella might not be a bad idea if you're out and about.

Enjoy the lingering warmth before the weekend truly begins!

Saturday looks to be the most eventful day weather-wise. We're forecasting a mix of sun and clouds, with temperatures reaching the high 70s in some southern areas, while northern parts might see mid-70s. However, the probability of scattered thunderstorms increases significantly during the afternoon and early evening hours.

These won't be all-day washouts, but rather intermittent, potentially strong cells. If you have outdoor plans, consider having a backup indoor option or be prepared to take cover. The evening could see skies clearing, leading to a muggy but mild night.

As we roll into Sunday, the weather pattern is expected to settle down a bit, offering a more consistent end to the weekend.

Expect partly cloudy skies and a noticeable drop in humidity, making for a much more comfortable day. Temperatures will likely be in the low 70s across the state, feeling distinctly more autumnal. It's an excellent day for a hike, a visit to a local farm, or simply relaxing on your porch with a warm beverage.

The cooler air will be a welcome change for many after the slight humidity of Saturday.

In summary, this September weekend in New Jersey promises a classic early autumn blend. Pack layers, keep an umbrella handy for Saturday, and be ready to enjoy both the warmth and the refreshing cool as the season transitions.

Whether you're heading to the shore, exploring state parks, or enjoying local events, there's something for everyone – rain or shine (or both!). Stay informed and make the most of your Garden State weekend!