Grammar Airport Weather Forecast

    • 32
    • 51

    Rain Showers Likely

    • 32
    • 40

    Rain Likely

    • 24
    • 36

    Chance Snow Showers

    • 29
    • 36

    Mostly Cloudy

    • 32
    • 40

    Mostly Cloudy

    • 21
    • 38

    Chance Rain/Snow

Today 9 Jan Ontario

Mostly cloudy with Showers likely this Morning, then partly sunny with a chance of Showers early this afternoon. Mostly sunny late. Very windy and mild with Highs in the lower 50s. South Winds 25 to 35 Mph with Gusts up to 50 Mph, becoming southwest 20 to 30 Mph. Chance of rain 70 percent.

Tonight 9 Jan Ontario

Mostly cloudy and very windy. Lows in the lower 30s. West Winds 25 to 35 Mph with Gusts up to 50 Mph, Diminishing to 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grammar Airport Temperature Statistics

January Temperature

Penn Yan, Penn Yan Airport (16.2 miles)

  • Lowest 1 January, 2026

    12 °F

  • Average January

    23.7 °F

  • Highest 6 January, 2026

    39 °F

Climate (2021–Present)

Penn Yan, Penn Yan Airport (16.2 miles)

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  • Average Low 2021–2026

    41.9 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    59.2 °F
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