Onapa Lake Weather Forecast

    • 78
    • 101

    Slight Chance Thunderstorms

    • 77
    • 100

    Slight Chance Thunderstorms

    • 77
    • 100

    Hot

    • 78
    • 100

    Hot

    • 75
    • 97

    Hot

    • 74
    • 97

    Hot

Today 6 Sep McIntosh

Sunny. Isolated Showers and Thunderstorms in the afternoon. Hot with Highs around 102. Southwest Winds around 5 Mph, becoming southeast around 5 Mph in the afternoon. Chance of rain 20 percent. Heat index Values up to 110.

Tonight 6 Sep McIntosh

Mostly clear. Lows in the mid 70s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Onapa Lake Temperature Statistics

September Temperature

Muskogee-Davis Regional Airport (21.1 miles)

  • Lowest 3 September, 2026

    73.9 °F

  • Average September

    89.5 °F

  • Highest 1 September, 2026

    104.6 °F

Climate (2021–2026)

Muskogee-Davis Regional Airport (21.1 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    63.5 °F

  • Average High 2021–2026

    74.8 °F
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