Marcellus Weather Forecast

    • 57
    • 78

    Chance Rain Showers

    • 56
    • 76

    Partly Sunny

    • 67
    • 87

    Chance Thunderstorms

    • 63
    • 87

    Rain Showers

    • 44
    • 77

    Rain Showers Likely

    • 43
    • 59

    Partly Sunny

Today 16 May Onondaga

Mostly sunny. Highs around 80. South Winds 10 to 15 Mph.

Tonight 16 May Onondaga

Mostly cloudy in the Evening, then becoming partly cloudy. A slight chance of Thunderstorms in the evening. A chance of Showers. Lows in the upper 50s. West Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marcellus Temperature Statistics

May Temperature

Syracuse, Syracuse Hancock International Airport (14.3 miles)

  • Lowest 12 May, 2026

    33.7 °F

  • Average May

    50 °F

  • Highest 4 May, 2026

    74.6 °F

Climate (2021–Present)

Syracuse, Syracuse Hancock International Airport (14.3 miles)

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    60.7 °F
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