Autumn's Crisp Embrace: New Hampshire Braces for a Chilly October Evening and Radiant Tuesday

As the vibrant hues of New Hampshire's autumn foliage begin to fade, Mother Nature is preparing a classic late-October evening for us. Grab your favorite mug and cozy blanket, because a distinct chill is settling across the Granite State this Monday, October 20, 2025, promising a crisp night and a brilliant start to your Tuesday.

Tonight, expect the mercury to take a significant dip as clear skies dominate.

Without the insulating blanket of clouds, heat will quickly radiate away, pushing temperatures down into the low to mid-30s across much of the state. Northern and higher elevations could even see readings tumble into the upper 20s, making for a truly frosty overnight period.

A widespread Frost Advisory is in effect from midnight until 8 AM Tuesday morning.

Residents should take precautions to protect sensitive outdoor plants, bring in any potted vegetation, and cover exposed pipes if necessary. For those heading out early Tuesday, be mindful of potential slick spots on untreated surfaces, as a light frost can sometimes lead to black ice, especially on bridges and overpasses.

But fear not, winter's gloom isn't entirely here yet! Tuesday, October 21st, promises to be a spectacular autumn day.

Following the chilly start, abundant sunshine will flood the region, helping temperatures rebound nicely into the upper 40s to low 50s. While not exactly warm, the bright sunshine and light breezes will make for a perfect day to enjoy the remaining fall colors, perhaps with a scenic drive or a brisk walk.

Looking ahead, the forecast indicates a continuation of this pleasant, albeit cool, pattern through mid-week.

So, whether you're stargazing tonight or planning outdoor activities tomorrow, New Hampshire's weather is serving up a quintessential taste of late autumn – cold nights, and beautiful, sunny days. Stay warm tonight, and enjoy the radiant skies tomorrow!