Grammar Airport Weather Forecast

    • 59
    • 77

    Rain Showers

    • 61
    • 75

    Rain Showers

    • 56
    • 76

    Chance Rain Showers

    • 52
    • 67

    Slight Chance Rain Showers

    • 49
    • 79

    Rain Showers Likely

    • 32
    • 63

    Chance Rain Showers

Today 14 Apr Ontario

Showers likely in the Morning, then Showers likely with a chance of Thunderstorms in the afternoon. Warm with Highs Ranging from around 70 on the Hilltops to the mid 70s across the lower Elevations. South Winds 5 to 10 Mph, becoming southwest 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 60 percent.

Tonight 14 Apr Ontario

Mostly cloudy. A chance of Showers in the Evening, then Showers likely with a chance of Thunderstorms overnight. Warm with Lows in the lower 60s. West Winds 10 to 15 Mph with Gusts up to 30 Mph, becoming southwest 5 to 10 Mph. Chance of rain 60 percent.

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Grammar Airport Temperature Statistics

April Temperature

Penn Yan, Penn Yan Airport (16.2 miles)

  • Lowest 8 April, 2026

    18 °F

  • Average April

    44.3 °F

  • Highest 10 April, 2026

    73 °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

    50.3 °F

  • Average High 2021–2026

    59.1 °F
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