Grand Pass Conservation Area Weather Forecast

    • 68
    • 92

    Chance Rain Showers

    • 70
    • 93

    Partly Sunny

    • 67
    • 91

    Rain Showers Likely

    • 63
    • 82

    Chance Thunderstorms

    • 59
    • 76

    Chance Rain Showers

    • 57
    • 75

    Partly Sunny

Today 17 Sep Saline

Sunny. Highs in the lower 90s. Southwest Winds around 5 Mph. Heat index Values up to 103 in the afternoon.

Tonight 17 Sep Saline

Mostly clear. Lows in the upper 60s. Light and variable Winds, becoming east around 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Pass Conservation Area Temperature Statistics

September Temperature

Chillicothe, Chillicothe Agri-Science Center (39.1 miles)

  • Lowest 14 September, 2026

    59 °F

  • Average September

    79.9 °F

  • Highest 5 September, 2026

    100.7 °F

Climate (2021–2026)

Chillicothe, Chillicothe Agri-Science Center (39.1 miles)

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  • Average Low 2021–2026

    45.6 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    67.2 °F
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