Portsmouth, NH Weather - Tomorrow’s Forecast

Sunday

Partly sunny

High:
36°F

Partly sunny, with a high near 36. Northwest wind around 5 mph becoming calm in the afternoon.

Sunday Night

Chance of snow

Overnight low:
17°F

A 50 percent chance of snow after 8pm. Mostly cloudy, with a low around 17. Calm wind becoming northwest around 5 mph after midnight.