Demster Weather Forecast

    • 56
    • 73

    Increasing Clouds

    • 58
    • 72

    Rain Showers

    • 58
    • 74

    Partly Sunny

    • 57
    • 76

    Partly Sunny

    • 61
    • 79

    Rain Showers Likely

    • 59
    • 76

    Chance Thunderstorms

    • 59
    • 76

    Partly Sunny

Today 21 Jun Oswego

Sunny. Highs Ranging from the upper 60s on the tug hill to the lower 70s across the lower Elevations. West Winds around 10 Mph.

Tonight 21 Jun Oswego

Partly cloudy Early, then becoming mostly cloudy. Lows Ranging from the lower 50s across the tug hill to the upper 50s along the lake Ontario shore. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Demster Temperature Statistics

June Temperature

Fulton, Oswego County Airport (10.6 miles)

  • Lowest 2 June, 2026

    41 °F

  • Average June

    65.7 °F

  • Highest 9 June, 2026

    87.1 °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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