Grammar Airport Weather Forecast

    • 28
    • 32

    Chance Snow

    • 34
    • 40

    Rain

    • 32
    • 38

    Slight Chance Snow Showers

    • 36
    • 44

    Mostly Cloudy

    • 34
    • 45

    Chance Rain Showers

    • 27
    • 43

    Chance Snow Showers

Today 5 Jan Ontario

Cloudy. Snow likely Early, then a chance of snow through early afternoon. Accumulation 1 to 2 Inches. Highs in the lower 30s. Light south Winds. Chance of snow 60 percent.

Tonight 5 Jan Ontario

Cloudy and not as cold with Lows in the upper 20s. Light southwest Winds.

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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

    16.9 °F

  • Highest 2 January, 2026

    23 °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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