Great Falls Lake Weather Forecast

    • 62
    • 84

    Rain Showers

    • 63
    • 79

    Rain Showers Likely

    • 64
    • 81

    Rain Showers

    • 63
    • 81

    Rain Showers Likely

    • 63
    • 82

    Rain Showers

    • 64
    • 81

    Rain Showers

    • 64
    • 83

    Rain Showers

Today 20 May Warren

Showers with Thunderstorms likely. Near steady temperature in the upper 70s. Southwest Winds around 5 Mph. Chance of rain 90 percent.

Tonight 20 May Warren

Mostly cloudy. Showers with Thunderstorms likely in the Evening, then a chance of Showers after midnight. Areas of fog. Lows in the lower 60s. Northwest Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 80 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Great Falls Lake Temperature Statistics

May Temperature

McMinnville Warren County Memorial Airport (13.7 miles)

  • Lowest 8 May, 2026

    39.2 °F

  • Average May

    62.8 °F

  • Highest 17 May, 2026

    89.6 °F

Climate (2021–Present)

McMinnville Warren County Memorial Airport (13.7 miles)

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  • Average Low 2021–2026

    48.2 °F

  • Average 2021–2026

    59.3 °F

  • Average High 2021–2026

    70.5 °F
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