10-Day Weather Forecast - Portsmouth, NH

Partly sunny. Highs around 20. Northwest winds 10 to 15 mph with gusts up to 30 mph. Wind chill values as low as 13 below in the morning.

Mostly clear. Lows around 5 above. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 9 below.

Sunny. Highs in the upper 20s. Northwest winds around 10 mph with gusts up to 20 mph. Wind chill values as low as 9 below in the morning.

Mostly clear. Lows around 9 above. Northwest winds around 10 mph with gusts up to 20 mph in the evening becoming light and variable.

Partly sunny in the morning then becoming mostly cloudy. Highs in the lower 30s.

Cloudy with a 50 percent chance of snow. Lows in the lower 20s.

Mostly cloudy. Highs in the upper 30s.

Partly cloudy. Lows around 20.

Partly sunny in the morning then becoming mostly cloudy. Highs in the mid 30s.

Mostly cloudy. Lows around 20.

Partly sunny in the morning then becoming mostly cloudy. Highs in the mid 30s.

Mostly cloudy in the evening then becoming partly cloudy. Lows around 20.

Mostly sunny. Highs in the mid 30s.

Clear. Low temperature around 24F. Dew point will be around 20F with an average humidity of 75%. Winds will be 3 mph from the NW.

Mostly sunny. High temperature around 37F. Dew point will be around 22F with an average humidity of 65%. Winds will be 2 mph from the SE.

Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 35F. Dew point will be around 28F with an average humidity of 77%. Winds will be 3 mph from the SE.

Cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 41F. Dew point will be around 30F with an average humidity of 69%. Winds will be 2 mph from the NW.

Mostly cloudy. Low temperature around 33F. Dew point will be around 28F with an average humidity of 72%. Winds will be 6 mph from the NW.