Portsmouth Weather Forecast

    • 59
    • 78

    Mostly Sunny

    • 65
    • 83

    Chance Rain Showers

    • 58
    • 83

    Slight Chance Rain Showers

    • 51
    • 73

    Mostly Sunny

    • 51
    • 70

    Partly Sunny

    • 53
    • 75

    Mostly Sunny

    • 51
    • 71

    Partly Sunny

Today 22 Sep Coastal Rockingham

Mostly sunny. Highs in the lower 80s. Light and variable Winds, becoming southwest around 10 Mph in the afternoon.

Tonight 22 Sep Coastal Rockingham

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 60s. Southwest Winds around 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Portsmouth Temperature Statistics

September Temperature

Pease Air Force Base / Portsmouth (3.1 miles)

  • Lowest 19 September, 2019

    38.8 °F

  • Average September

    61.4 °F

  • Highest 11 September, 2019

    85.1 °F

Climate (2010–Present)

Pease Air Force Base / Portsmouth (3.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2010–Present

    41.5 °F

  • Average 2010–Present

    49.9 °F

  • Average High 2010–Present

    58.3 °F
Get an account to remove ads