Portsmouth Weather Forecast

    • 48
    • 81

    Slight Chance Thunderstorms

    • 51
    • 78

    Mostly Sunny

    • 56
    • 80

    Chance Thunderstorms

    • 56
    • 88

    Mostly Sunny

    • 60
    • 89

    Chance Thunderstorms

    • 57
    • 87

    Chance Thunderstorms

Today 12 May Shelby

Partly sunny. A slight chance of Showers and Thunderstorms in the morning. Highs in the upper 70s. Southwest Winds around 15 Mph, becoming northwest in the afternoon. Gusts up to 35 Mph. Chance of rain 20 percent.

Tonight 12 May Shelby

Mostly clear. Cooler with Lows in the upper 40s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph, Diminishing to 5 to 10 Mph after midnight.

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Portsmouth Temperature Statistics

May Temperature

Harlan, Harlan Municipal Airport (9.9 miles)

  • Lowest 2 May, 2026

    26.6 °F

  • Average May

    53.1 °F

  • Highest 4 May, 2026

    78.8 °F

Climate (2021–Present)

Harlan, Harlan Municipal Airport (9.9 miles)

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  • Average Low 2021–2026

    39 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    61.9 °F
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