Grammar Airport Weather Forecast

    • 62
    • 76

    Rain Showers

    • 56
    • 76

    Rain Showers Likely

    • 52
    • 64

    Chance Rain Showers

    • 45
    • 75

    Rain Showers Likely

    • 32
    • 57

    Chance Rain Showers

    • 28
    • 43

    Partly Sunny

Today 15 Apr Ontario

Showers with a chance of Thunderstorms. Warm with Highs Ranging from the lower 70s on the Hilltops to the mid 70s across the lower Elevations. Southwest Winds 5 to 10 Mph, becoming west 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

Tonight 15 Apr Ontario

Mostly cloudy. A chance of Showers and Thunderstorms late. Mild with Lows in the mid 50s. Light Winds. Chance of rain 30 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

    44.6 °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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