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Manchester Weather Meltdown: Heat and Thunderstorms Set to Disrupt July 4th Plans—Here’s What to Know

Manchester Weather Meltdown: Heat and Thunderstorms Set to Disrupt July 4th Plans—Here’s What to Know

Brace yourself, Manchester—your week is about to get hit with a one-two punch of scorching heat and volatile weather. While today may feel like perfect summer, Tuesday is expected to crank up the temperature into the 90s and then unload a round of potentially dangerous afternoon thunderstorms. And just as the Fourth of July weekend creeps closer, Mother Nature is stirring up some surprises.

Forecasts show a humid, unstable atmosphere building over New Hampshire, which could fuel sudden downpours, gusty winds, and vivid lightning by Tuesday afternoon. That makes now the time to rethink outdoor plans, secure loose belongings, and stay alert to changing weather alerts—especially if your holiday prep includes barbecues, road trips, or fireworks.

What’s Really Coming This Week

Monday brings the heat.
Temperatures climb to 88–90°F under mostly sunny skies. It’ll feel toasty but manageable—no major storms expected today.

Tuesday is the game-changer.
By midday, we’re expecting highs in the low 90s, but the real threat begins in the afternoon as a cold front sweeps through. The result? Intense thunderstorms with 1–2 inches of rainfall, possible flash flooding, and gusty winds over 20 mph. Storms could hit right during peak travel hours and into the early evening—a major headache if you’re making July 4 prep runs.

Wednesday hits reset.
After the chaos, the skies settle. It’s sunny, breezy, and cooler, with lower humidity and a high of about 90°F.

Thursday may try to sneak in one more storm.
While mostly dry, there’s still a chance for an afternoon or evening thunderstorm, so keep a close eye if you’re prepping grills, decor, or outdoor events.

Friday, July 4 brings the reward.
Expect partly sunny skies and a comfortable 82°F—a golden setup for fireworks, beach days, and family picnics.

Saturday and Sunday stay strong.
Sunshine dominates the weekend with highs in the mid-80s to low 90s, making it ideal for hiking, parades, or anything outdoors.

Why This Week’s Storms Matter

The timing of Tuesday’s storms is key: it comes right when many are gearing up for July 4th plans. These storms won’t just be inconvenient—they could be disruptive. Expect:

  • Flash flooding in urban areas and low-lying spots.

  • Risky driving conditions during the evening rush.

  • Post-storm power outages if winds knock out lines or trees.

And while Thursday’s weather won’t be a repeat of Tuesday, a pop-up storm could still send last-minute events scrambling.

How to Prepare Right Now

  • Move Tuesday outdoor activities to morning hours.

  • Bring in anything that could blow away—umbrellas, flags, patio chairs.

  • Check travel routes early—especially if you’re headed out of town before the holiday.

  • Charge your phone and weather radio.

  • Have a backup plan for outdoor parties on Thursday, just in case.

Bottom Line

Tuesday will be the toughest day of the week, but if you plan around it, you’ll coast into a spectacular July 4th weekend. Don’t take the calm before the storm for granted—be storm-smart, adjust your schedule, and protect your plans now.

Would you like this forecast turned into a shareable graphic or flyer? I can also provide an hourly planner for July 4th weather if you’re organizing events. Just let me know!

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