Grammar Airport Weather Forecast

    • 40
    • 61

    Increasing Clouds

    • 42
    • 56

    Partly Sunny

    • 40
    • 51

    Rain Showers

    • 40
    • 59

    Partly Sunny

    • 46
    • 65

    Mostly Cloudy

    • 46
    • 63

    Rain Showers Likely

Today 23 Apr Ontario

Sunny. Highs in the lower 60s. Light Winds, becoming north around 10 Mph.

Tonight 23 Apr Ontario

Partly cloudy. Lows around 40. Light northeast Winds.

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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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