New Jersey's Sunday Showdown: Heat, Thunder, and the Unfolding Relief Ahead

July 21, 2025
2 min read

NJ faces a wild Sunday of severe storms and intense heat before a refreshing cool-down. Navigate today's risks and prepare for the week's sweet relief.

AccuWeather forecast map showing severe thunderstorms expected Sunday afternoon and evening across New Jersey and the Northeast, with risks of flooding and damaging winds.

Sunday's Stormy Embrace: What to Expect Today

New Jersey is set for a dynamic Sunday, where a relentless summer heat will collide with an approaching cold front, setting the stage for potentially severe thunderstorms. The day promises off-and-on showers and thunderstorms, but the real concern escalates this afternoon into the early evening, specifically between 2 and 8 p.m. During this critical window, scattered severe thunderstorms are forecast to sweep across the state, with the northern counties, particularly those north of , facing the highest threat. The has placed these areas under a 'slight risk' (Level 2 out of 5) for severe weather, while the rest of is under a 'marginal risk' for isolated severe storms. What does this mean for residents? The primary danger stems from damaging wind gusts, which could reach speeds of up to 70 mph, capable of toppling trees and power lines. Large hail and heavy rainfall are also distinct possibilities, adding to the day's volatile mix. This isn't just a typical summer storm; it's a significant weather event that demands attention and readiness.

Beyond the Deluge: Current Flood Impacts and Lingering Concerns

While eyes are on the afternoon's severe storm potential, parts of are already grappling with the aftermath of earlier, intense rainfall. and , for instance, were under a flood warning through Sunday morning, following downpours that dumped an astonishing 2 to 5 inches of rain. This morning's deluge led to significant flash flooding, swamping roads in these areas and causing widespread disruption. Images circulating on social media captured streets in places like submerged, highlighting the immediate impact on infrastructure and daily life. The cautions that while the heaviest morning rain has passed, the runoff will take considerable time to recede. This means lingering flooding impacts will persist in these affected areas throughout the day, even as the focus shifts to the incoming cold front. The ground is already saturated, which could exacerbate any new heavy rainfall from the afternoon storms, even if new widespread flash flood warnings aren't issued immediately.

New Jersey weather map showing sunny skies and comfortable temperatures for Monday, indicating a fresh start after the storms.

The Great Escape: Overnight Cool-Down and Monday's Fresh Start

After the tumultuous conditions of Sunday, can breathe a collective sigh of relief as a significant cool-down is on the horizon. The cold front responsible for today's stormy embrace is expected to sweep through the area late Sunday night, acting as a welcome broom to clear out the oppressive heat and humidity. This overnight transition promises a much-anticipated fresh start for the new workweek. will dawn with notably more comfortable conditions across the . Expect sunny skies, significantly lower humidity levels, and temperatures that will feel refreshingly mild compared to the weekend's swelter. Forecasts project highs around 84 degrees for Monday, a delightful drop from the near-90s with heat indices closer to 100 degrees experienced earlier. As residents step out, they'll notice the palpable difference in the air, a clear sign that summer's intensity is taking a brief, but much-needed, pause.

Ten-day weather forecast for New Jersey, showing daily temperatures and conditions, highlighting the return of heat later in the week.

Charting the Week Ahead: From Comfort to Climbs

The refreshing break ushered in by Monday's cooler air isn't just a fleeting moment; it sets the tone for the early part of the week, offering a delightful reprieve before summer's grip inevitably tightens again. Tuesday, in particular, looks to be a standout, perhaps even the 'pick of the week,' with sunny skies and a comfortable high of 81 degrees. Wednesday continues this pleasant trend, remaining mostly sunny with temperatures climbing slightly to a still-manageable 84 degrees. However, don't get too comfortable. By , the mercury begins its ascent once more, with forecasts predicting mostly sunny and hot conditions, pushing temperatures back up to the 90-degree mark. The upward climb culminates on , which is expected to be hazy, hot, and humid, with highs soaring to a scorching 95 degrees, accompanied by the chance of an afternoon storm. This pattern reminds us that 's summer weather is a true rollercoaster, offering fleeting moments of comfort before returning to its characteristic heat and humidity.

Weathering the Changes: Essential Preparedness for Residents

Navigating 's dynamic weather requires vigilance and preparedness, especially as we move through this pivotal transition. With severe thunderstorms expected this afternoon, residents should prioritize safety. Secure any loose outdoor items, as damaging wind gusts up to 70 mph are a primary concern. Be ready for potential power outages and have a plan for communication. Given the earlier flash flooding in parts of the state, exercise extreme caution if you encounter standing water on roads; remember, 'Turn around, don't drown.' Even if your area wasn't directly impacted by morning floods, localized heavy rain from new storms could quickly create hazardous conditions. Looking ahead, as the heat and humidity return later in the week, it's crucial to stay hydrated, seek shade or air conditioning during peak temperatures, and check on vulnerable neighbors. Staying informed through local weather alerts and official advisories will be your best defense against whatever 's summer throws our way.

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