Round Lake Weather Forecast

    • 47
    • 67

    Becoming Sunny

    • 61
    • 75

    Partly Sunny

    • 62
    • 78

    Rain Showers Likely

    • 61
    • 78

    Rain Showers Likely

    • 55
    • 75

    Partly Sunny

    • 55
    • 73

    Chance Rain Showers

Today 14 Sep Onondaga

Mostly sunny. Highs in the upper 60s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 14 Sep Onondaga

Mostly clear. Lows in the upper 40s. West Winds 5 to 10 Mph, becoming south after midnight.

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Round Lake Temperature Statistics

September Temperature

Syracuse, Syracuse Hancock International Airport (7.5 miles)

  • Lowest 7 September, 2026

    53.7 °F

  • Average September

    70.2 °F

  • Highest 2 September, 2026

    85.6 °F

Climate (2021–2026)

Syracuse, Syracuse Hancock International Airport (7.5 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    60.6 °F
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