Grandview Park Weather Forecast

    • 53
    • 69

    Increasing Clouds

    • 56
    • 69

    Mostly Cloudy

    • 55
    • 66

    Mostly Cloudy

    • 53
    • 64

    Mostly Cloudy

    • 54
    • 66

    Partly Sunny

    • 58
    • 70

    Chance Rain Showers

Today 25 Sep Jefferson

Partly sunny with a 40 percent chance of Showers. Highs in the upper 60s.

Tonight 25 Sep Jefferson

Mainly clear through the early Overnight, then becoming partly cloudy. Lows Ranging from the upper 40s across the tug hill to the lower 50s along the lake Ontario shore. Northeast Winds 5 to 10 Mph, becoming light.

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Grandview Park Temperature Statistics

September Temperature

Watertown, Watertown International Airport (22.4 miles)

  • Lowest 19 September, 2026

    38.6 °F

  • Average September

    61.7 °F

  • Highest 2 September, 2026

    83.6 °F

Climate (2021–2026)

Watertown, Watertown International Airport (22.4 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    57.5 °F
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