Portsmouth Weather Forecast

    • 36
    • 51

    Rain Showers Likely

    • 35
    • 54

    Rain Showers

    • 30
    • 49

    Partly Sunny

    • 23
    • 44

    Chance Snow Showers

    • 30
    • 43

    Mostly Sunny

    • 38
    • 53

    Partly Sunny

    • 38
    • 57

    Partly Sunny

Today 4 Apr Coastal Rockingham

Partly sunny. Highs in the lower 50s. East Winds around 10 Mph with Gusts up to 30 Mph.

Tonight 4 Apr Coastal Rockingham

Mostly cloudy. Rain Showers likely after midnight. Patchy fog after midnight. Lows in the mid 30s. Southeast Winds around 10 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Portsmouth Temperature Statistics

April Temperature

Pease Air Force Base / Portsmouth (3.1 miles)

  • Lowest 2 April, 2026

    35.2 °F

  • Average April

    41.9 °F

  • Highest 1 April, 2026

    62.1 °F

Climate (2021–Present)

Pease Air Force Base / Portsmouth (3.1 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    59.1 °F
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