Demster Weather Forecast

    • 56
    • 74

    Increasing Clouds

    • 61
    • 75

    Mostly Cloudy

    • 65
    • 79

    Rain Showers

    • 55
    • 73

    Mostly Cloudy

    • 53
    • 68

    Mostly Sunny

    • 59
    • 76

    Partly Sunny

Today 7 Sep Oswego

Sunny. Highs Ranging from around 70 on the tug hill to the mid 70s across the lower Elevations. Light Winds, becoming northwest 5 to 10 Mph.

Tonight 7 Sep Oswego

Clear with Areas of fog. Lows Ranging from the upper 40s across the tug hill to the mid 50s along the lake Ontario shore. Light Winds.

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Demster Temperature Statistics

September Temperature

Fulton, Oswego County Airport (10.6 miles)

  • Lowest 4 September, 2026

    61 °F

  • Average September

    70.9 °F

  • Highest 2 September, 2026

    82 °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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