Lebanon Weather Forecast

    • 46
    • 83

    Slight Chance Thunderstorms

    • 35
    • 62

    Partly Sunny

    • 43
    • 68

    Partly Sunny

    • 44
    • 65

    Chance Rain Showers

    • 45
    • 59

    Chance Rain Showers

    • 50
    • 66

    Chance Rain Showers

Today 20 May Southern Grafton

Partly sunny with isolated Showers. Near steady temperature around 80. West Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 20 percent.

Tonight 20 May Southern Grafton

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 40s. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lebanon Temperature Statistics

May Temperature

Lebanon Municipal Airport (2.5 miles)

  • Lowest 9 May, 2026

    30.9 °F

  • Average May

    53.9 °F

  • Highest 18 May, 2026

    89.1 °F

Climate (2021–Present)

Lebanon Municipal Airport (2.5 miles)

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  • Average Low 2021–2026

    38 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    59.7 °F
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