Cornish Flat Weather Forecast

    • 51
    • 68

    Increasing Clouds

    • 57
    • 77

    Mostly Cloudy

    • 58
    • 74

    Chance Rain Showers

    • 44
    • 70

    Partly Sunny

    • 51
    • 66

    Rain Showers Likely

    • 50
    • 65

    Rain Showers Likely

Today 15 Sep Sullivan

Areas of fog this morning. Mostly sunny. Visibility one quarter mile or less at Times this morning. Highs in the upper 60s. Light and variable Winds.

Tonight 15 Sep Sullivan

Partly cloudy. Lows around 50. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cornish Flat Temperature Statistics

September Temperature

Lebanon Municipal Airport (8.7 miles)

  • Lowest 7 September, 2026

    44.1 °F

  • Average September

    62.9 °F

  • Highest 10 September, 2026

    82 °F

Climate (2021–2026)

Lebanon Municipal Airport (8.7 miles)

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  • Average Low 2021–2026

    37.9 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    59.7 °F
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