Autumn's Embrace: A Look at New Hampshire's Weather on September 22, 2025

As autumn truly settles in across the Granite State, New Hampshire residents can look forward to a wonderfully characteristic fall day on Monday, September 22, 2025. The crisp, invigorating air, a hallmark of this beautiful season, will greet us with a gentle embrace, setting the perfect stage for outdoor activities or simply enjoying the changing scenery from your window.

Today's forecast promises predominantly clear skies with an abundance of sunshine gracing most regions.

Temperatures will remain pleasantly cool, reflecting the deeper progression into autumn. Expect daytime highs to hover comfortably in the upper 50s to low 60s Fahrenheit across much of southern and central New Hampshire. Northern regions, particularly in the White Mountains, will experience cooler conditions, with highs likely staying in the low to mid-50s.

As the sun dips below the horizon tonight, temperatures will take a noticeable dip, ushering in chilly overnight lows.

Most areas can anticipate temperatures falling into the low to mid-40s, with some sheltered valleys and higher elevations potentially dipping into the upper 30s. It's definitely a night for that extra blanket!

A gentle breeze from the northwest will add to the crisp feel throughout the day, generally remaining light, between 5 to 10 miles per hour.

There's virtually no chance of precipitation expected across the state today, ensuring dry conditions for all your plans.

For those tracking the breathtaking autumnal display, foliage continues its march across New Hampshire. While peak colors are still a week or two away for many central and southern areas, the northern peaks and higher elevations are already showcasing vibrant reds, oranges, and golds, creating picturesque vistas.

This comfortable weather provides an excellent opportunity for a scenic drive or a hike to witness nature's artistry.

Looking ahead, the early part of the week appears to maintain this delightful fall pattern, with a continuation of cool temperatures and generally dry conditions. Enjoy this quintessential New Hampshire autumn day!