Manchester’s Late-October Forecast: Fog Hangs On Through Monday, Showers Move In Tuesday

Jordan Whitfield

October 25, 2025

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MANCHESTER, N.H. — A crisp, quiet start greeted the city early Saturday as thin ribbons of fog settled along the river and valley floors. Frost twinkled on windshields beneath clear skies, a sure sign of the late-October mix: bright afternoons, damp nights, and a subtle hint that winter isn’t far off.

Forecasters at the National Weather Service office in Gray, Maine, call for a mostly sunny Saturday with highs around 55°F and light winds. After sunset, fog is expected to form quickly—especially in low spots near I-93 and Route 3—reducing visibility into early Sunday.

Sunday should bring partial clearing with similar temperatures, although the morning fog could slow commuters and potentially affect early departures at Manchester-Boston Regional Airport. By Monday, leftover patches of fog fade into filtered sunshine with a mild high near 53°F, setting the stage for a weak front approaching New England.

The first round of scattered showers looks poised to arrive late Tuesday, signaling a shift toward a cooler, unsettled stretch as Halloween nears. Midweek turns a bit breezier and damp, but snow is not in the cards yet. That said, cooler air trailing Tuesday’s system may kick off an early-November run of frosty mornings.

Travelers should use headlights in fog-prone zones, allow extra time for dawn drives, and protect sensitive garden plants, as overnight lows dip close to freezing Sunday and Monday.

Five-day outlook for Manchester:
– Saturday: High 55, Low 35 — Mostly sunny; light north breeze.
– Sunday: High 53, Low 32 — Dense morning fog, then sunny and cool.
– Monday: High 53, Low 35 — Patchy fog; partly sunny with light wind.
– Tuesday: High 52, Low 38 — Partly sunny; showers developing late.
– Wednesday: High 53, Low 37 — Cloudy to start, drying later.

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