Cornish Flat Weather Forecast

    • 63
    • 82

    Partly Sunny

    • 68
    • 90

    Partly Sunny

    • 46
    • 82

    Chance Rain Showers

    • 40
    • 60

    Partly Sunny

    • 45
    • 64

    Mostly Cloudy

    • 46
    • 60

    Chance Rain Showers

Today 18 May Sullivan

Mostly cloudy with a slight chance of Showers this Morning, then partly sunny this afternoon. Highs in the lower 80s. South Winds around 10 Mph. Chance of rain 20 percent.

Tonight 18 May Sullivan

Mostly clear. Lows in the lower 60s. South Winds around 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cornish Flat Temperature Statistics

May Temperature

Lebanon Municipal Airport (8.7 miles)

  • Lowest 9 May, 2026

    30.9 °F

  • Average May

    51.8 °F

  • Highest 5 May, 2026

    84 °F

Climate (2021–Present)

Lebanon Municipal Airport (8.7 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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