Demster Weather Forecast

    • 62
    • 77

    Chance Rain Showers

    • 61
    • 77

    Partly Sunny

    • 57
    • 75

    Chance Thunderstorms

    • 55
    • 74

    Mostly Sunny

    • 56
    • 76

    Partly Sunny

    • 60
    • 79

    Chance Rain Showers

Today 17 Aug Oswego

Some patchy fog in the Morning, otherwise mostly cloudy with Showers likely in the Morning, then partly sunny with a chance of Showers and Thunderstorms in the afternoon. Humid with Highs Ranging from the lower 70s on the tug hill to the upper 70s across the lower Elevations. Light Winds, becoming northwest around 10 Mph. Chance of rain 70 percent.

Tonight 17 Aug Oswego

Partly cloudy with some patchy fog developing. Muggy with Lows Ranging from the upper 50s across the tug hill to the lower 60s along the lake Ontario shore. Light Winds.

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Demster Temperature Statistics

August Temperature

Fulton, Oswego County Airport (10.6 miles)

  • Lowest 4 August, 2026

    57 °F

  • Average August

    71.3 °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

    40.7 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    58 °F
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