Grammar Airport Weather Forecast

    • 40
    • 63

    Decreasing Clouds

    • 41
    • 59

    Partly Sunny

    • 38
    • 53

    Mostly Cloudy

    • 41
    • 53

    Chance Rain Showers

    • 42
    • 60

    Slight Chance Rain Showers

    • 46
    • 65

    Mostly Cloudy

Today 22 Apr Ontario

Mostly cloudy Early, then becoming mostly sunny. Highs Ranging from around 60 on the Hilltops to the mid 60s across the lower Elevations. Light Winds, becoming northwest around 10 Mph.

Tonight 22 Apr Ontario

Mainly clear in the Evening, then becoming partly cloudy. Lows around 40. Light west 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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