Grammar Airport Weather Forecast

    • 31
    • 41

    Rain

    • 25
    • 34

    Snow Showers Likely

    • 30
    • 36

    Chance Rain/Snow

    • 34
    • 42

    Rain Showers Likely

    • 32
    • 42

    Rain Showers Likely

    • 31
    • 43

    Slight Chance Rain Showers

Today 9 Nov Ontario

Rain. Highs Ranging from the upper 30s on the Hilltops to the lower 40s across the lower Elevations. Light Winds, becoming northeast around 10 Mph. Chance of rain near 100 percent.

Tonight 9 Nov Ontario

Rain Showers likely. Lows Ranging from the lower 30s on the Hilltops to the upper 30s across the lower Elevations. Light northeast Winds. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grammar Airport Temperature Statistics

November Temperature

Penn Yan, Penn Yan Airport (16.2 miles)

  • Lowest 6 November, 2025

    28.9 °F

  • Average November

    45.1 °F

  • Highest 5 November, 2025

    60.1 °F

Climate (2020–Present)

Penn Yan, Penn Yan Airport (16.2 miles)

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  • Average Low 2020–2025

    42.1 °F

  • Average 2020–2025

    50.7 °F

  • Average High 2020–2025

    59.4 °F
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