Great Falls Lake Weather Forecast

    • 63
    • 87

    Chance Thunderstorms

    • 61
    • 83

    Chance Rain Showers

    • 59
    • 81

    Chance Rain Showers

    • 51
    • 81

    Partly Sunny

    • 52
    • 81

    Partly Sunny

    • 53
    • 82

    Partly Sunny

Today 22 Sep Warren

Mostly sunny. Areas of fog this morning. A chance of Showers and Thunderstorms this afternoon. Highs in the mid 80s. North Winds around 5 Mph. Chance of rain 40 percent.

Tonight 22 Sep Warren

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Patchy fog after midnight. Lows in the mid 60s. North Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

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  • Temperature Real-Time

Great Falls Lake Temperature Statistics

September Temperature

McMinnville Warren County Memorial Airport (13.7 miles)

  • Lowest 13 September, 2026

    64.4 °F

  • Average September

    79.5 °F

  • Highest 3 September, 2026

    98.6 °F

Climate (2021–2026)

McMinnville Warren County Memorial Airport (13.7 miles)

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  • Average Low 2021–2026

    48.5 °F

  • Average 2021–2026

    59.6 °F

  • Average High 2021–2026

    70.8 °F
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