Grammar Airport Weather Forecast

    • 32
    • 37

    Cloudy

    • 36
    • 42

    Breezy

    • 36
    • 51

    Rain Showers Likely

    • 32
    • 48

    Rain Likely

    • 23
    • 37

    Chance Snow Showers

    • 26
    • 33

    Mostly Cloudy

Today 7 Jan Ontario

Cloudy. Patchy fog. Highs in the upper 30s. West Winds 10 to 15 Mph, Diminishing to 5 to 10 Mph.

Tonight 7 Jan Ontario

Cloudy with some patchy fog developing. Lows in the lower 30s. West Winds 5 to 10 Mph, becoming light.

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Grammar Airport Temperature Statistics

January Temperature

Penn Yan, Penn Yan Airport (16.2 miles)

  • Lowest 1 January, 2026

    12 °F

  • Average January

    21.5 °F

  • Highest 5 January, 2026

    34 °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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