Demster Weather Forecast

    • 50
    • 64

    Cloudy

    • 47
    • 65

    Partly Sunny

    • 58
    • 72

    Mostly Cloudy

    • 57
    • 77

    Chance Rain Showers

    • 46
    • 66

    Mostly Cloudy

    • 46
    • 66

    Chance Rain Showers

    • 45
    • 65

    Chance Rain Showers

Today 28 Sep Oswego

Partly sunny with a 30 percent chance of Showers. Highs around 60.

Tonight 28 Sep Oswego

Cloudy with some patchy fog developing from late evening on. Lows Ranging from the mid 40s on the tug hill to around 50 across the lower Elevations. Light north Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Demster Temperature Statistics

September Temperature

Fulton, Oswego County Airport (10.6 miles)

  • Lowest 25 September, 2026

    37.9 °F

  • Average September

    62.6 °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

    40.6 °F

  • Average 2021–2026

    49.3 °F

  • Average High 2021–2026

    57.9 °F
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