Portsmouth Weather Forecast

    • 54
    • 76

    Slight Chance Rain Showers

    • 47
    • 77

    Chance Rain Showers

    • 40
    • 67

    Mostly Sunny

    • 52
    • 72

    Mostly Cloudy

    • 48
    • 76

    Chance Thunderstorms

    • 48
    • 72

    Partly Sunny

Today 9 May Scioto

Mostly cloudy this Morning, then becoming partly cloudy. A chance of Showers with a slight chance of Thunderstorms. Highs in the mid 70s. South Winds around 5 Mph, becoming southwest this afternoon. Chance of rain 50 percent.

Tonight 9 May Scioto

Mostly clear. Lows in the mid 50s. Southwest Winds around 5 Mph.

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Portsmouth Temperature Statistics

May Temperature

Ashland Regional Airport (18.6 miles)

  • Lowest 2 May, 2026

    36 °F

  • Average May

    55.9 °F

  • Highest 4 May, 2026

    78.1 °F

Climate (2021–Present)

Ashland Regional Airport (18.6 miles)

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  • Average Low 2021–2026

    46.2 °F

  • Average 2021–2026

    56 °F

  • Average High 2021–2026

    67.3 °F
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