Great Falls Lake Weather Forecast

    • 70
    • 98

    Slight Chance Thunderstorms

    • 69
    • 96

    Partly Sunny

    • 66
    • 95

    Rain Showers Likely

    • 64
    • 88

    Rain Showers

    • 60
    • 83

    Chance Rain Showers

    • 59
    • 81

    Partly Sunny

Today 19 Sep Warren

Sunny. A chance of Showers and Thunderstorms this afternoon. Hot with Highs in the mid 90s. Light and variable Winds. Chance of rain 40 percent.

Tonight 19 Sep Warren

Partly cloudy in the Evening, then becoming mostly clear. Lows around 70. Light and variable Winds, becoming south around 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • 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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