Portsmouth Weather Forecast

    • 4
    • 28

    Chance Snow

    • 17
    • 25

    Snow Likely

    • 28
    • 36

    Chance Snow

    • 27
    • 42

    Chance Rain

    • 29
    • 42

    Partly Sunny

    • 34
    • 46

    Chance Rain

    • 29
    • 44

    Chance Rain

Today 4 Jan Coastal Rockingham

Partly sunny. Highs in the upper 20s. Northwest Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 4 Jan Coastal Rockingham

Partly cloudy in the Evening, then clearing. Lows around 5 above. Northwest Winds around 10 Mph. Wind chill Values as low as 5 below.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Portsmouth Temperature Statistics

January Temperature

Pease Air Force Base / Portsmouth (3.1 miles)

  • Lowest 2 January, 2026

    12.7 °F

  • Average January

    20.3 °F

  • Highest 1 January, 2026

    27.5 °F

Climate (2021–Present)

Pease Air Force Base / Portsmouth (3.1 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.3 °F
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