10-Day Weather Forecast - Portsmouth, NH

Mostly sunny. Highs in the lower 20s. West winds 10 to 15 mph with gusts up to 25 mph.

Mostly clear. Lows around 11. West winds around 10 mph. Gusts up to 25 mph in the evening.

Mostly sunny in the morning then becoming mostly cloudy. Highs in the lower 30s. Southwest winds around 10 mph.

Cloudy with a chance of snow in the evening then partly cloudy after midnight. Lows in the lower 20s. Chance of snow 30 percent.

Partly sunny. Highs around 40.

Partly cloudy. Lows around 20.

Partly sunny. Highs in the upper 20s.

Partly cloudy. Lows zero to 5 above zero.

Partly sunny. Highs 10 to 15.

Partly cloudy. Lows around zero.

Partly sunny. Highs around 15.

Clear. Low temperature around 4F. Dew point will be around -5F with an average humidity of 60%. Winds will be 8 mph from the NW.

Cloudy. High temperature around 19F. Dew point will be around 2F with an average humidity of 58%. Winds will be 9 mph from the W.

Mostly cloudy. Low temperature around 9F. Dew point will be around 1F with an average humidity of 62%. Winds will be 10 mph from the W.

Sunny. High temperature around 19F. Dew point will be around 2F with an average humidity of 55%. Winds will be 11 mph from the W.

Mostly clear. Low temperature around 8F. Dew point will be around 1F with an average humidity of 61%. Winds will be 9 mph from the W.

Sunny. High temperature around 22F. Dew point will be around 5F with an average humidity of 59%. Winds will be 8 mph from the W.

Partly cloudy with a slight chance of snow. Chance of precipitation 25%. Low temperature around 12F. Dew point will be around 7F with an average humidity of 69%. Winds will be 6 mph from the W.