Portsmouth Weather Forecast

    • 54
    • 70

    Mostly Cloudy

    • 52
    • 61

    Rain Showers Likely

    • 51
    • 69

    Chance Rain Showers

    • 46
    • 64

    Slight Chance Rain Showers

    • 45
    • 61

    Mostly Cloudy

    • 45
    • 57

    Chance Rain Showers

Today 16 May Coastal Rockingham

Mostly cloudy in the Morning, then becoming partly sunny. Widespread fog in the morning. Highs around 70. Light and variable Winds.

Tonight 16 May Coastal Rockingham

Mostly cloudy. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Lows in the lower 50s. Light and variable Winds. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Portsmouth Temperature Statistics

May Temperature

Pease Air Force Base / Portsmouth (3.1 miles)

  • Lowest 12 May, 2025

    41.2 °F

  • Average May

    55 °F

  • Highest 12 May, 2025

    77.7 °F

Climate (2020–Present)

Pease Air Force Base / Portsmouth (3.1 miles)

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  • Average Low 2020–2025

    42.6 °F

  • Average 2020–2025

    50.9 °F

  • Average High 2020–2025

    59.4 °F
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