Grammar Airport Weather Forecast

    • 50
    • 70

    Increasing Clouds

    • 49
    • 62

    Rain Showers Likely

    • 42
    • 61

    Rain Showers

    • 36
    • 52

    Slight Chance Rain Showers

    • 37
    • 51

    Slight Chance Rain Showers

    • 36
    • 50

    Chance Rain Showers

Today 27 Apr Ontario

Sunny. Highs Ranging from the mid 60s on the Hilltops to around 70 across the lower Elevations. Light Winds, becoming southeast around 10 Mph.

Tonight 27 Apr Ontario

Partly cloudy and Breezy, Milder with Lows around 50. Southeast Winds 5 to 10 Mph, becoming south 10 to 15 Mph with Gusts up to 30 Mph.

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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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