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.
Grammar Airport Temperature Statistics
July Temperature
Penn Yan, Penn Yan Airport (16.2 miles)
Lowest 23 July, 2026
52 °FAverage July
72.9 °FHighest 1 July, 2026
95 °F
Climate (2021–2026)
Penn Yan, Penn Yan Airport (16.2 miles)
Average Low 2021–2026
41.8 °FAverage 2021–2026
50.4 °FAverage High 2021–2026
59.1 °F