Grammar Airport Weather Forecast

    • 61
    • 70

    Rain Showers Likely

    • 61
    • 76

    Chance Rain Showers

    • 62
    • 81

    Partly Sunny

    • 66
    • 85

    Chance Rain Showers

    • 63
    • 80

    Rain Showers Likely

    • 63
    • 80

    Chance Rain Showers

Today 29 Jul Ontario

Mostly cloudy. A chance of Showers this Morning, then a chance of Showers and Thunderstorms this afternoon. Cool with Highs around 70. Northwest Winds 5 to 10 Mph, increasing to 10 to 15 Mph. Chance of rain 50 percent.

Tonight 29 Jul Ontario

Cloudy. Showers likely in the Evening, then a chance of Showers overnight. Lows around 60. Northwest Winds 5 to 10 Mph. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grammar Airport Temperature Statistics

July Temperature

Penn Yan, Penn Yan Airport (16.2 miles)

  • Lowest 23 July, 2026

    52 °F
  • Average July

    72.9 °F
  • Highest 1 July, 2026

    95 °F

Climate (2021–2026)

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

    59.1 °F
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