Grammar Airport Weather Forecast

    • 42
    • 54

    Chance Rain Showers

    • 39
    • 48

    Rain Showers

    • 39
    • 58

    Partly Sunny

    • 46
    • 65

    Partly Sunny

    • 48
    • 61

    Rain Showers Likely

    • 43
    • 63

    Chance Rain Showers

Today 24 Apr Ontario

Partly to mostly sunny. Highs in the mid 50s. Light northeast Winds.

Tonight 24 Apr Ontario

Mostly cloudy. Showers likely overnight. Lows in the lower 40s. Light Winds, becoming east 5 to 10 Mph. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grammar Airport Temperature Statistics

April Temperature

Penn Yan, Penn Yan Airport (16.2 miles)

  • Lowest 8 April, 2026

    18 °F

  • Average April

    49.3 °F

  • Highest 16 April, 2026

    80.1 °F

Climate (2021–Present)

Penn Yan, Penn Yan Airport (16.2 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    50.4 °F

  • Average High 2021–2026

    59.2 °F
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