Demster Weather Forecast

    • 64
    • 77

    Rain Showers Likely

    • 60
    • 77

    Partly Sunny

    • 60
    • 79

    Chance Thunderstorms

    • 56
    • 74

    Slight Chance Thunderstorms

    • 55
    • 72

    Mostly Sunny

    • 55
    • 73

    Partly Sunny

Today 10 Aug Oswego

Showers likely in the Morning, then Showers with a chance of Thunderstorms in the afternoon. Humid with Highs Ranging from the lower 70s on the tug hill to the upper 70s across the lower Elevations. West Winds 10 Mph or less. Chance of rain 90 percent.

Tonight 10 Aug Oswego

Mostly cloudy with Showers likely with a chance of Thunderstorms in the Evening, then partly cloudy with a chance of Showers overnight. Muggy with Lows Ranging from around 60 across the tug hill to the mid 60s along the lake Ontario shore. Light Winds. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

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Demster Temperature Statistics

August Temperature

Fulton, Oswego County Airport (10.6 miles)

  • Lowest 4 August, 2026

    57 °F

  • Average August

    72 °F

  • Highest 5 August, 2026

    86 °F

Climate (2021–2026)

Fulton, Oswego County Airport (10.6 miles)

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  • Average Low 2021–2026

    40.8 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    58 °F
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