Round Lake Weather Forecast

    • 76
    • 100

    Hot

    • 75
    • 99

    Hot

    • 73
    • 99

    Hot

    • 71
    • 100

    Hot

    • 72
    • 100

    Hot

    • 74
    • 100

    Hot

    • 72
    • 97

    Chance Rain Showers

Today 15 Sep Harrison

Mostly sunny. Hot. Near steady temperature in the upper 90s. South Winds around 5 Mph. Heat index Values up to 105.

Tonight 15 Sep Harrison

Mostly clear. Lows in the mid 70s. South Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Round Lake Temperature Statistics

September Temperature

Marshall (11.8 miles)

  • Lowest 4 September, 2026

    71.1 °F

  • Average September

    84.4 °F

  • Highest 13 September, 2026

    100.8 °F

Climate (2021–2026)

Marshall (11.8 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    66.4 °F

  • Average High 2021–2026

    78.3 °F
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