Cornish Flat Weather Forecast

    • 60
    • 84

    Mostly Sunny

    • 69
    • 88

    Rain Showers Likely

    • 74
    • 93

    Chance Thunderstorms

    • 75
    • 96

    Hot

    • 71
    • 92

    Slight Chance Thunderstorms

    • 68
    • 89

    Chance Thunderstorms

    • 65
    • 84

    Chance Rain Showers

Today 29 Jun Sullivan

Patchy fog this morning. Mostly sunny. Highs in the mid 80s. Light and variable Winds.

Tonight 29 Jun Sullivan

Mostly clear. Lows in the upper 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cornish Flat Temperature Statistics

June Temperature

Lebanon Municipal Airport (8.7 miles)

  • Lowest 2 June, 2026

    41 °F

  • Average June

    67.1 °F

  • Highest 12 June, 2026

    91.4 °F

Climate (2021–2026)

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

    59.6 °F
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