If you’ve ever stood on the edge of Riverview Beach Park and felt that sudden, bone-chilling gust off the Delaware River, you know that weather for Pennsville New Jersey isn't just a number on a phone app. It’s a mood. Honestly, people from outside Salem County think Jersey weather is all the same, but Pennsville is its own animal. You’ve got the river influence, the marshy humidity, and those weird winter days where it’s 40 degrees but feels like 10.
Right now, we’re deep in the January grind. Today, Saturday, January 17, 2026, it’s basically a gray soup out there. We’re looking at a high of 39°F and a low of 31°F. If you’re heading out, bring the umbrella because there's an 83% chance of light rain during the day. As the sun goes down, that might turn into a messy snow mix with a 35% chance of flakes and winds hitting 11 mph from the south.
The River Factor: Why It’s Never Just "Cold"
Living this close to the water changes the game. The Delaware River acts like a giant thermal battery. In the summer, it keeps the town slightly less scorched than the inland pine barrens, but in the winter? It just adds a dampness that gets under your skin.
Kinda sucks when you're trying to stay dry.
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Most people don't realize that January 30 is statistically the coldest day of the year here. Usually, we’re looking at a range between 26°F and 40°F. But the real killer is the "feels like" temp. This morning, even though it was 34°F, it felt like 28°F because of that 7 mph southern wind. It’s that wet cold. The kind that makes your joints ache and makes you want to live inside a bowl of soup.
Survival Guide for the Next Few Days
The upcoming forecast is a bit of a roller coaster. If you’re planning on doing anything outdoors, here’s the breakdown for the week:
- Sunday (Jan 18): Expect snow showers. High of 34°F, low of 21°F. It’s gonna be breezy with a 12 mph northwest wind.
- Monday: Sunny but crisp. 36°F for the high, so at least the Vitamin D might show up.
- Tuesday: This is the day you stay inside. The high is only 25°F and the low hits a brutal 16°F.
- Wednesday & Thursday: We’re back to the "mix." Rain and snow are likely both days, with highs crawling back into the 37°F to 41°F range.
Basically, keep the salt bag by the front door and don't put the heavy coat away yet.
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The Humidity Myth
Everyone talks about the humidity in July, and yeah, it’s gross. July is the hottest month, averaging around 86°F. But January is actually the cloudiest month in Pennsville. The sky is overcast about 52% of the time. That’s why the winter feels so long here; it’s not just the temperature, it’s the lack of sun.
Contrast that with September, which is actually the clearest month. If you’re looking for that perfect "New Jersey weather" day, wait for late September when the sky is clear 63% of the time and the humidity finally takes a hike.
What This Means for You
Pennsville is prone to what some call "weather whiplash." We’ve seen historical events like the Mother’s Day Nor’easter in 2008 or the 2022 December front where temperatures dropped 53 degrees in a single day.
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If you're a local or moving here, you’ve gotta be prepared for the flood risk too. We’re at low elevation. Tidal flooding isn't just a "maybe" anymore—it’s a regular Tuesday if the wind blows the wrong way. The Department of Environmental Protection has been sounding the alarm on sea-level rise, and places like Pennsville are right on the front lines.
Actionable Next Steps:
- Check your gutters now: With the 83% rain chance today and snow showers tomorrow, any clogs will turn your yard into a swamp.
- Layering is king: Don't trust the high of 39°F. Between the humidity and the 11 mph wind, you'll want a windproof outer layer.
- Watch the Tuesday freeze: When the temp drops to 16°F, make sure your outdoor spigots are covered. That’s pipe-bursting territory.